Dec 11 13:05:09.165 INFO checking museun/rcc against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:05:09.165 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 13:05:09.560 INFO [stdout] e2f3ede70edf5cedd750eedee6d2c5d097f1101ba95906f73f1a0e1fcc20a291
Dec 11 13:05:09.568 INFO running `"docker" "start" "-a" "e2f3ede70edf5cedd750eedee6d2c5d097f1101ba95906f73f1a0e1fcc20a291"`
Dec 11 13:05:11.675 INFO [stderr] usermod: no changes
Dec 11 13:05:11.764 INFO [stderr]    Compiling rcc v0.1.0 (/source)
Dec 11 13:05:12.160 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:12.160 INFO [stderr]   --> build.rs:35:5
Dec 11 13:05:12.160 INFO [stderr]    |
Dec 11 13:05:12.160 INFO [stderr] 35 | /     writeln!(
Dec 11 13:05:12.160 INFO [stderr] 36 | |         f,
Dec 11 13:05:12.160 INFO [stderr] 37 | |         r###"#[test]
Dec 11 13:05:12.160 INFO [stderr] 38 | | fn test_{:04}() {{
Dec 11 13:05:12.160 INFO [stderr] ...  |
Dec 11 13:05:12.160 INFO [stderr] 46 | |         n, source, expected, n, n
Dec 11 13:05:12.161 INFO [stderr] 47 | |     );
Dec 11 13:05:12.161 INFO [stderr]    | |______^
Dec 11 13:05:12.161 INFO [stderr]    |
Dec 11 13:05:12.161 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 13:05:12.161 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:12.161 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:12.161 INFO [stderr] 
Dec 11 13:05:12.161 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:12.161 INFO [stderr]   --> build.rs:77:5
Dec 11 13:05:12.161 INFO [stderr]    |
Dec 11 13:05:12.161 INFO [stderr] 77 |     write!(f, "{}", "// nothing to see here");
Dec 11 13:05:12.161 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:12.161 INFO [stderr]    |
Dec 11 13:05:12.161 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:12.161 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:12.161 INFO [stderr] 
Dec 11 13:05:12.882 INFO [stderr] warning: unknown lint: `cyclomatic_complexity`
Dec 11 13:05:12.883 INFO [stderr]  --> src/semantics.rs:1:10
Dec 11 13:05:12.883 INFO [stderr]   |
Dec 11 13:05:12.884 INFO [stderr] 1 | #![allow(cyclomatic_complexity)]
Dec 11 13:05:12.884 INFO [stderr]   |          ^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:12.884 INFO [stderr]   |
Dec 11 13:05:12.885 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 11 13:05:12.885 INFO [stderr] 
Dec 11 13:05:12.924 INFO [stderr] warning: unknown lint: `cyclomatic_complexity`
Dec 11 13:05:12.925 INFO [stderr]  --> src/semantics.rs:1:10
Dec 11 13:05:12.925 INFO [stderr]   |
Dec 11 13:05:12.926 INFO [stderr] 1 | #![allow(cyclomatic_complexity)]
Dec 11 13:05:12.926 INFO [stderr]   |          ^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:12.926 INFO [stderr]   |
Dec 11 13:05:12.927 INFO [stderr]   = note: #[warn(unknown_lints)] on by default
Dec 11 13:05:12.927 INFO [stderr] 
Dec 11 13:05:16.107 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.108 INFO [stderr]   --> src/codegen.rs:19:5
Dec 11 13:05:16.108 INFO [stderr]    |
Dec 11 13:05:16.108 INFO [stderr] 19 |     writeln!(&mut buf, ".intel_syntax noprefix");
Dec 11 13:05:16.109 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.109 INFO [stderr]    |
Dec 11 13:05:16.109 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 13:05:16.109 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.110 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.110 INFO [stderr] 
Dec 11 13:05:16.110 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.111 INFO [stderr]   --> src/codegen.rs:21:5
Dec 11 13:05:16.111 INFO [stderr]    |
Dec 11 13:05:16.111 INFO [stderr] 21 |     writeln!(&mut buf, ".data");
Dec 11 13:05:16.111 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.111 INFO [stderr]    |
Dec 11 13:05:16.112 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.112 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.112 INFO [stderr] 
Dec 11 13:05:16.113 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.113 INFO [stderr]   --> src/codegen.rs:27:13
Dec 11 13:05:16.113 INFO [stderr]    |
Dec 11 13:05:16.114 INFO [stderr] 27 |             writeln!(&mut buf, "{}:", &name);
Dec 11 13:05:16.114 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.114 INFO [stderr]    |
Dec 11 13:05:16.114 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.115 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.115 INFO [stderr] 
Dec 11 13:05:16.115 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.116 INFO [stderr]   --> src/codegen.rs:28:13
Dec 11 13:05:16.116 INFO [stderr]    |
Dec 11 13:05:16.116 INFO [stderr] 28 |             writeln!(&mut buf, "  .ascii \"{}\"", escape(&data));
Dec 11 13:05:16.117 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.117 INFO [stderr]    |
Dec 11 13:05:16.117 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.118 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.118 INFO [stderr] 
Dec 11 13:05:16.124 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.125 INFO [stderr]   --> src/codegen.rs:32:5
Dec 11 13:05:16.125 INFO [stderr]    |
Dec 11 13:05:16.125 INFO [stderr] 32 |     writeln!(&mut buf, ".text");
Dec 11 13:05:16.126 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.126 INFO [stderr]    |
Dec 11 13:05:16.126 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.127 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.127 INFO [stderr] 
Dec 11 13:05:16.128 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.128 INFO [stderr]   --> src/codegen.rs:46:5
Dec 11 13:05:16.128 INFO [stderr]    |
Dec 11 13:05:16.129 INFO [stderr] 46 |     writeln!(buf, ".global {}", func.name);
Dec 11 13:05:16.129 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.129 INFO [stderr]    |
Dec 11 13:05:16.130 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.130 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.130 INFO [stderr] 
Dec 11 13:05:16.131 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.131 INFO [stderr]   --> src/codegen.rs:47:5
Dec 11 13:05:16.131 INFO [stderr]    |
Dec 11 13:05:16.132 INFO [stderr] 47 |     writeln!(buf, "{}:", func.name);
Dec 11 13:05:16.132 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.143 INFO [stderr]    |
Dec 11 13:05:16.143 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.144 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.144 INFO [stderr] 
Dec 11 13:05:16.145 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.145 INFO [stderr]   --> src/codegen.rs:49:5
Dec 11 13:05:16.145 INFO [stderr]    |
Dec 11 13:05:16.146 INFO [stderr] 49 |     writeln!(buf, "  push rbp");
Dec 11 13:05:16.146 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.146 INFO [stderr]    |
Dec 11 13:05:16.147 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.147 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.147 INFO [stderr] 
Dec 11 13:05:16.148 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.148 INFO [stderr]   --> src/codegen.rs:50:5
Dec 11 13:05:16.149 INFO [stderr]    |
Dec 11 13:05:16.149 INFO [stderr] 50 |     writeln!(buf, "  mov rbp, rsp");
Dec 11 13:05:16.149 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.149 INFO [stderr]    |
Dec 11 13:05:16.150 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.150 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.150 INFO [stderr] 
Dec 11 13:05:16.151 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.151 INFO [stderr]   --> src/codegen.rs:51:5
Dec 11 13:05:16.151 INFO [stderr]    |
Dec 11 13:05:16.152 INFO [stderr] 51 |     writeln!(buf, "  sub rsp, {}", round(func.stacksize, 16));
Dec 11 13:05:16.152 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.152 INFO [stderr]    |
Dec 11 13:05:16.152 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.153 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.153 INFO [stderr] 
Dec 11 13:05:16.154 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.154 INFO [stderr]   --> src/codegen.rs:74:9
Dec 11 13:05:16.154 INFO [stderr]    |
Dec 11 13:05:16.154 INFO [stderr] 74 |         writeln!(buf, "  push {}", r);
Dec 11 13:05:16.155 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.155 INFO [stderr]    |
Dec 11 13:05:16.156 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.156 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.156 INFO [stderr] 
Dec 11 13:05:16.157 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.157 INFO [stderr]   --> src/codegen.rs:83:17
Dec 11 13:05:16.157 INFO [stderr]    |
Dec 11 13:05:16.158 INFO [stderr] 83 |                 writeln!(buf, "  mov {}, {}", REGS64[*reg as usize], val);
Dec 11 13:05:16.158 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.158 INFO [stderr]    |
Dec 11 13:05:16.158 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.159 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.159 INFO [stderr] 
Dec 11 13:05:16.159 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.160 INFO [stderr]   --> src/codegen.rs:87:17
Dec 11 13:05:16.160 INFO [stderr]    |
Dec 11 13:05:16.160 INFO [stderr] 87 | /                 writeln!(
Dec 11 13:05:16.160 INFO [stderr] 88 | |                     buf,
Dec 11 13:05:16.161 INFO [stderr] 89 | |                     "  mov {}, {}",
Dec 11 13:05:16.161 INFO [stderr] 90 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.161 INFO [stderr] 91 | |                 );
Dec 11 13:05:16.162 INFO [stderr]    | |__________________^
Dec 11 13:05:16.162 INFO [stderr]    |
Dec 11 13:05:16.162 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.163 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.163 INFO [stderr] 
Dec 11 13:05:16.164 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.164 INFO [stderr]   --> src/codegen.rs:95:17
Dec 11 13:05:16.164 INFO [stderr]    |
Dec 11 13:05:16.164 INFO [stderr] 95 |                 writeln!(buf, "  mov rax, {}", REGS64[*src as usize]);
Dec 11 13:05:16.165 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.165 INFO [stderr]    |
Dec 11 13:05:16.165 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.166 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.166 INFO [stderr] 
Dec 11 13:05:16.166 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.167 INFO [stderr]   --> src/codegen.rs:96:17
Dec 11 13:05:16.167 INFO [stderr]    |
Dec 11 13:05:16.167 INFO [stderr] 96 |                 writeln!(buf, "  jmp {}", ret);
Dec 11 13:05:16.167 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.168 INFO [stderr]    |
Dec 11 13:05:16.168 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.169 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.169 INFO [stderr] 
Dec 11 13:05:16.169 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.170 INFO [stderr]    --> src/codegen.rs:100:17
Dec 11 13:05:16.170 INFO [stderr]     |
Dec 11 13:05:16.170 INFO [stderr] 100 | /                 writeln!(
Dec 11 13:05:16.170 INFO [stderr] 101 | |                     buf,
Dec 11 13:05:16.171 INFO [stderr] 102 | |                     "  mov {}, [{}]",
Dec 11 13:05:16.171 INFO [stderr] 103 | |                     match w {
Dec 11 13:05:16.171 INFO [stderr] ...   |
Dec 11 13:05:16.172 INFO [stderr] 108 | |                     REGS64[*src as usize]
Dec 11 13:05:16.172 INFO [stderr] 109 | |                 );
Dec 11 13:05:16.172 INFO [stderr]     | |__________________^
Dec 11 13:05:16.173 INFO [stderr]     |
Dec 11 13:05:16.173 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.174 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.174 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.174 INFO [stderr]   --> src/codegen.rs:19:5
Dec 11 13:05:16.175 INFO [stderr]    |
Dec 11 13:05:16.175 INFO [stderr] 19 |     writeln!(&mut buf, ".intel_syntax noprefix");
Dec 11 13:05:16.175 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.176 INFO [stderr]    |
Dec 11 13:05:16.176 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 13:05:16.176 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.177 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.177 INFO [stderr] 
Dec 11 13:05:16.177 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.178 INFO [stderr]   --> src/codegen.rs:21:5
Dec 11 13:05:16.178 INFO [stderr]    |
Dec 11 13:05:16.178 INFO [stderr] 21 |     writeln!(&mut buf, ".data");
Dec 11 13:05:16.179 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.179 INFO [stderr]    |
Dec 11 13:05:16.179 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.180 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.180 INFO [stderr] 
Dec 11 13:05:16.180 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.181 INFO [stderr]   --> src/codegen.rs:27:13
Dec 11 13:05:16.181 INFO [stderr]    |
Dec 11 13:05:16.181 INFO [stderr] 27 |             writeln!(&mut buf, "{}:", &name);
Dec 11 13:05:16.182 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.182 INFO [stderr]    |
Dec 11 13:05:16.182 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.183 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.183 INFO [stderr] 
Dec 11 13:05:16.183 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.183 INFO [stderr]   --> src/codegen.rs:28:13
Dec 11 13:05:16.184 INFO [stderr]    |
Dec 11 13:05:16.184 INFO [stderr] 28 |             writeln!(&mut buf, "  .ascii \"{}\"", escape(&data));
Dec 11 13:05:16.184 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.185 INFO [stderr]    |
Dec 11 13:05:16.185 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.185 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.185 INFO [stderr] 
Dec 11 13:05:16.185 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.185 INFO [stderr]   --> src/codegen.rs:32:5
Dec 11 13:05:16.185 INFO [stderr]    |
Dec 11 13:05:16.185 INFO [stderr] 32 |     writeln!(&mut buf, ".text");
Dec 11 13:05:16.185 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.185 INFO [stderr]    |
Dec 11 13:05:16.185 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.185 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.185 INFO [stderr] 
Dec 11 13:05:16.185 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.185 INFO [stderr]   --> src/codegen.rs:46:5
Dec 11 13:05:16.185 INFO [stderr]    |
Dec 11 13:05:16.185 INFO [stderr] 46 |     writeln!(buf, ".global {}", func.name);
Dec 11 13:05:16.185 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.185 INFO [stderr]    |
Dec 11 13:05:16.185 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.185 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.185 INFO [stderr] 
Dec 11 13:05:16.186 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.186 INFO [stderr]   --> src/codegen.rs:47:5
Dec 11 13:05:16.186 INFO [stderr]    |
Dec 11 13:05:16.186 INFO [stderr] 47 |     writeln!(buf, "{}:", func.name);
Dec 11 13:05:16.186 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.186 INFO [stderr]    |
Dec 11 13:05:16.186 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.186 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.186 INFO [stderr] 
Dec 11 13:05:16.186 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.186 INFO [stderr]   --> src/codegen.rs:49:5
Dec 11 13:05:16.186 INFO [stderr]    |
Dec 11 13:05:16.186 INFO [stderr] 49 |     writeln!(buf, "  push rbp");
Dec 11 13:05:16.186 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.186 INFO [stderr]    |
Dec 11 13:05:16.186 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.186 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.188 INFO [stderr] 
Dec 11 13:05:16.190 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.190 INFO [stderr]   --> src/codegen.rs:50:5
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr] 50 |     writeln!(buf, "  mov rbp, rsp");
Dec 11 13:05:16.190 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.190 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.190 INFO [stderr] 
Dec 11 13:05:16.190 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.190 INFO [stderr]   --> src/codegen.rs:51:5
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr] 51 |     writeln!(buf, "  sub rsp, {}", round(func.stacksize, 16));
Dec 11 13:05:16.190 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.190 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.190 INFO [stderr] 
Dec 11 13:05:16.190 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.190 INFO [stderr]   --> src/codegen.rs:74:9
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr] 74 |         writeln!(buf, "  push {}", r);
Dec 11 13:05:16.190 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.190 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.190 INFO [stderr] 
Dec 11 13:05:16.190 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.190 INFO [stderr]   --> src/codegen.rs:83:17
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr] 83 |                 writeln!(buf, "  mov {}, {}", REGS64[*reg as usize], val);
Dec 11 13:05:16.190 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.190 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.190 INFO [stderr] 
Dec 11 13:05:16.190 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.190 INFO [stderr]   --> src/codegen.rs:87:17
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr] 87 | /                 writeln!(
Dec 11 13:05:16.190 INFO [stderr] 88 | |                     buf,
Dec 11 13:05:16.190 INFO [stderr] 89 | |                     "  mov {}, {}",
Dec 11 13:05:16.190 INFO [stderr] 90 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.190 INFO [stderr] 91 | |                 );
Dec 11 13:05:16.190 INFO [stderr]    | |__________________^
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.190 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.190 INFO [stderr] 
Dec 11 13:05:16.190 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.190 INFO [stderr]   --> src/codegen.rs:95:17
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr] 95 |                 writeln!(buf, "  mov rax, {}", REGS64[*src as usize]);
Dec 11 13:05:16.190 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.190 INFO [stderr]    |
Dec 11 13:05:16.190 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.190 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.191 INFO [stderr] 
Dec 11 13:05:16.191 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.191 INFO [stderr]   --> src/codegen.rs:96:17
Dec 11 13:05:16.191 INFO [stderr]    |
Dec 11 13:05:16.191 INFO [stderr] 96 |                 writeln!(buf, "  jmp {}", ret);
Dec 11 13:05:16.191 INFO [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.191 INFO [stderr]    |
Dec 11 13:05:16.191 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.191 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.191 INFO [stderr] 
Dec 11 13:05:16.191 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.191 INFO [stderr]    --> src/codegen.rs:100:17
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr] 100 | /                 writeln!(
Dec 11 13:05:16.191 INFO [stderr] 101 | |                     buf,
Dec 11 13:05:16.191 INFO [stderr] 102 | |                     "  mov {}, [{}]",
Dec 11 13:05:16.191 INFO [stderr] 103 | |                     match w {
Dec 11 13:05:16.191 INFO [stderr] ...   |
Dec 11 13:05:16.191 INFO [stderr] 108 | |                     REGS64[*src as usize]
Dec 11 13:05:16.191 INFO [stderr] 109 | |                 );
Dec 11 13:05:16.191 INFO [stderr]     | |__________________^
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.191 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.191 INFO [stderr] 
Dec 11 13:05:16.191 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.191 INFO [stderr]    --> src/codegen.rs:112:21
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr] 112 | /                     writeln!(
Dec 11 13:05:16.191 INFO [stderr] 113 | |                         buf,
Dec 11 13:05:16.191 INFO [stderr] 114 | |                         "  movzx {}, {}",
Dec 11 13:05:16.191 INFO [stderr] 115 | |                         REGS64[*dst as usize], REGS8[*dst as usize]
Dec 11 13:05:16.191 INFO [stderr] 116 | |                     );
Dec 11 13:05:16.191 INFO [stderr]     | |______________________^
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.191 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.191 INFO [stderr] 
Dec 11 13:05:16.191 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.191 INFO [stderr]    --> src/codegen.rs:121:17
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr] 121 | /                 writeln!(
Dec 11 13:05:16.191 INFO [stderr] 122 | |                     buf,
Dec 11 13:05:16.191 INFO [stderr] 123 | |                     "  mov [{}], {}",
Dec 11 13:05:16.191 INFO [stderr] 124 | |                     REGS64[*dst as usize],
Dec 11 13:05:16.191 INFO [stderr] ...   |
Dec 11 13:05:16.191 INFO [stderr] 129 | |                     },
Dec 11 13:05:16.191 INFO [stderr] 130 | |                 );
Dec 11 13:05:16.191 INFO [stderr]     | |__________________^
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.191 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.191 INFO [stderr] 
Dec 11 13:05:16.191 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.191 INFO [stderr]    --> src/codegen.rs:134:17
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr] 134 | /                 writeln!(
Dec 11 13:05:16.191 INFO [stderr] 135 | |                     buf,
Dec 11 13:05:16.191 INFO [stderr] 136 | |                     "  mov [rbp-{}], {}",
Dec 11 13:05:16.191 INFO [stderr] 137 | |                     val,
Dec 11 13:05:16.191 INFO [stderr] ...   |
Dec 11 13:05:16.191 INFO [stderr] 142 | |                     },
Dec 11 13:05:16.191 INFO [stderr] 143 | |                 );
Dec 11 13:05:16.191 INFO [stderr]     | |__________________^
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.191 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.191 INFO [stderr] 
Dec 11 13:05:16.191 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.191 INFO [stderr]    --> src/codegen.rs:147:17
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr] 147 |                 writeln!(buf, ".L{}:", val);
Dec 11 13:05:16.191 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.191 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.191 INFO [stderr] 
Dec 11 13:05:16.191 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.191 INFO [stderr]    --> src/codegen.rs:151:17
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr] 151 |                 writeln!(buf, "  lea {}, {}", REGS64[*reg as usize], label);
Dec 11 13:05:16.191 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.191 INFO [stderr]     |
Dec 11 13:05:16.191 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.191 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.191 INFO [stderr] 
Dec 11 13:05:16.191 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.192 INFO [stderr]    --> src/codegen.rs:155:17
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr] 155 |                 writeln!(buf, "  cmp {}, 0", REGS64[*reg as usize]);
Dec 11 13:05:16.192 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.192 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.192 INFO [stderr] 
Dec 11 13:05:16.192 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.192 INFO [stderr]    --> src/codegen.rs:156:17
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr] 156 |                 writeln!(buf, "  je .L{}", val);
Dec 11 13:05:16.192 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.192 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.192 INFO [stderr] 
Dec 11 13:05:16.192 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.192 INFO [stderr]    --> src/codegen.rs:160:17
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr] 160 |                 writeln!(buf, "  jmp .L{}", val);
Dec 11 13:05:16.192 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.192 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.192 INFO [stderr] 
Dec 11 13:05:16.192 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.192 INFO [stderr]    --> src/codegen.rs:164:17
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr] 164 | /                 writeln!(
Dec 11 13:05:16.192 INFO [stderr] 165 | |                     buf,
Dec 11 13:05:16.192 INFO [stderr] 166 | |                     "  or {},{}",
Dec 11 13:05:16.192 INFO [stderr] 167 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.192 INFO [stderr] 168 | |                 );
Dec 11 13:05:16.192 INFO [stderr]     | |__________________^
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.192 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.192 INFO [stderr] 
Dec 11 13:05:16.192 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.192 INFO [stderr]    --> src/codegen.rs:172:17
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr] 172 | /                 writeln!(
Dec 11 13:05:16.192 INFO [stderr] 173 | |                     buf,
Dec 11 13:05:16.192 INFO [stderr] 174 | |                     "  xor {},{}",
Dec 11 13:05:16.192 INFO [stderr] 175 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.192 INFO [stderr] 176 | |                 );
Dec 11 13:05:16.192 INFO [stderr]     | |__________________^
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.192 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.192 INFO [stderr] 
Dec 11 13:05:16.192 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.192 INFO [stderr]    --> src/codegen.rs:180:17
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr] 180 | /                 writeln!(
Dec 11 13:05:16.192 INFO [stderr] 181 | |                     buf,
Dec 11 13:05:16.192 INFO [stderr] 182 | |                     "  xor {},{}",
Dec 11 13:05:16.192 INFO [stderr] 183 | |                     REGS64[*reg as usize], val
Dec 11 13:05:16.192 INFO [stderr] 184 | |                 );
Dec 11 13:05:16.192 INFO [stderr]     | |__________________^
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.192 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.192 INFO [stderr] 
Dec 11 13:05:16.192 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.192 INFO [stderr]    --> src/codegen.rs:188:17
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr] 188 | /                 writeln!(
Dec 11 13:05:16.192 INFO [stderr] 189 | |                     buf,
Dec 11 13:05:16.192 INFO [stderr] 190 | |                     "  and {},{}",
Dec 11 13:05:16.192 INFO [stderr] 191 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.192 INFO [stderr] 192 | |                 );
Dec 11 13:05:16.192 INFO [stderr]     | |__________________^
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.192 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.192 INFO [stderr] 
Dec 11 13:05:16.192 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.192 INFO [stderr]    --> src/codegen.rs:196:17
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr] 196 |                 writeln!(buf, "  cmp {}, 0", REGS64[*reg as usize]);
Dec 11 13:05:16.192 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.192 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.192 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.192 INFO [stderr] 
Dec 11 13:05:16.192 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.192 INFO [stderr]    --> src/codegen.rs:197:17
Dec 11 13:05:16.192 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 197 |                 writeln!(buf, "  jne .L{}", val);
Dec 11 13:05:16.193 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.193 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.193 INFO [stderr] 
Dec 11 13:05:16.193 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.193 INFO [stderr]    --> src/codegen.rs:201:17
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 201 |                 writeln!(buf, "  lea {}, [rbp-{}]", REGS64[*reg as usize], val);
Dec 11 13:05:16.193 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.193 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.193 INFO [stderr] 
Dec 11 13:05:16.193 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.193 INFO [stderr]    --> src/codegen.rs:205:17
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 205 | /                 writeln!(
Dec 11 13:05:16.193 INFO [stderr] 206 | |                     buf,
Dec 11 13:05:16.193 INFO [stderr] 207 | |                     "  add {}, {}",
Dec 11 13:05:16.193 INFO [stderr] 208 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.193 INFO [stderr] 209 | |                 );
Dec 11 13:05:16.193 INFO [stderr]     | |__________________^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.193 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.193 INFO [stderr] 
Dec 11 13:05:16.193 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.193 INFO [stderr]    --> src/codegen.rs:213:17
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 213 |                 writeln!(buf, "  add {}, {}", REGS64[*reg as usize], val);
Dec 11 13:05:16.193 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.193 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.193 INFO [stderr] 
Dec 11 13:05:16.193 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.193 INFO [stderr]    --> src/codegen.rs:217:17
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 217 | /                 writeln!(
Dec 11 13:05:16.193 INFO [stderr] 218 | |                     buf,
Dec 11 13:05:16.193 INFO [stderr] 219 | |                     "  sub {}, {}",
Dec 11 13:05:16.193 INFO [stderr] 220 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.193 INFO [stderr] 221 | |                 );
Dec 11 13:05:16.193 INFO [stderr]     | |__________________^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.193 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.193 INFO [stderr] 
Dec 11 13:05:16.193 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.193 INFO [stderr]    --> src/codegen.rs:225:17
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 225 |                 writeln!(buf, "  sub {}, {}", REGS64[*reg as usize], val);
Dec 11 13:05:16.193 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.193 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.193 INFO [stderr] 
Dec 11 13:05:16.193 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.193 INFO [stderr]    --> src/codegen.rs:230:17
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 230 |                 writeln!(buf, "  mov rax, {}", REGS64[*src as usize]);
Dec 11 13:05:16.193 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.193 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.193 INFO [stderr] 
Dec 11 13:05:16.193 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.193 INFO [stderr]    --> src/codegen.rs:231:17
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 231 |                 writeln!(buf, "  mul {}", REGS64[*dst as usize]);
Dec 11 13:05:16.193 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.193 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.193 INFO [stderr] 
Dec 11 13:05:16.193 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.193 INFO [stderr]    --> src/codegen.rs:232:17
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 232 |                 writeln!(buf, "  mov {}, rax", REGS64[*dst as usize]);
Dec 11 13:05:16.193 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.193 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.193 INFO [stderr] 
Dec 11 13:05:16.193 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.193 INFO [stderr]    --> src/codegen.rs:236:17
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.193 INFO [stderr] 236 |                 writeln!(buf, "  mov rax, {}", val);
Dec 11 13:05:16.193 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.193 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:237:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 237 |                 writeln!(buf, "  mul {}", REGS64[*reg as usize]);
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:238:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 238 |                 writeln!(buf, "  mov {}, rax", REGS64[*reg as usize]);
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:242:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 242 |                 writeln!(buf, "  mov rax, {}", REGS64[*dst as usize]);
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:243:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 243 |                 writeln!(buf, "  cqo");
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:244:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 244 |                 writeln!(buf, "  div {}", REGS64[*src as usize]);
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:245:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 245 |                 writeln!(buf, "  mov {}, rax", REGS64[*dst as usize]);
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:249:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 249 |                 writeln!(buf, "  mov rax, {}", REGS64[*dst as usize]);
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:250:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 250 |                 writeln!(buf, "  cqo");
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:251:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 251 |                 writeln!(buf, "  div {}", REGS64[*src as usize]);
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:252:17
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr] 252 |                 writeln!(buf, "  mov {}, rdx", REGS64[*dst as usize]);
Dec 11 13:05:16.194 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.194 INFO [stderr]     |
Dec 11 13:05:16.194 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.194 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.194 INFO [stderr] 
Dec 11 13:05:16.194 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.194 INFO [stderr]    --> src/codegen.rs:256:17
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 256 |                 writeln!(buf, "  mov cl, {}", REGS8[*src as usize]);
Dec 11 13:05:16.195 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:257:17
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 257 |                 writeln!(buf, "  shl {}, cl", REGS64[*dst as usize]);
Dec 11 13:05:16.195 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:261:17
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 261 |                 writeln!(buf, "  mov cl, {}", REGS8[*src as usize]);
Dec 11 13:05:16.195 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:262:17
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 262 |                 writeln!(buf, "  shr {}, cl", REGS64[*dst as usize]);
Dec 11 13:05:16.195 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:266:17
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 266 |                 writeln!(buf, "  neg {}", REGS64[*src as usize]);
Dec 11 13:05:16.195 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:273:21
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 273 |                     writeln!(buf, "  mov {}, {}", caller64[i], REGS64[*arg as usize]);
Dec 11 13:05:16.195 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:276:17
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 276 |                 writeln!(buf, "  push r10");
Dec 11 13:05:16.195 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:277:17
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 277 |                 writeln!(buf, "  push r11");
Dec 11 13:05:16.195 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:278:17
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 278 |                 writeln!(buf, "  mov rax, 0");
Dec 11 13:05:16.195 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:279:17
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr] 279 |                 writeln!(buf, "  call {}", name);
Dec 11 13:05:16.195 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.195 INFO [stderr]     |
Dec 11 13:05:16.195 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.195 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.195 INFO [stderr] 
Dec 11 13:05:16.195 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.195 INFO [stderr]    --> src/codegen.rs:280:17
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr] 280 |                 writeln!(buf, "  pop r11");
Dec 11 13:05:16.196 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.196 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.196 INFO [stderr] 
Dec 11 13:05:16.196 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.196 INFO [stderr]    --> src/codegen.rs:281:17
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr] 281 |                 writeln!(buf, "  pop r10");
Dec 11 13:05:16.196 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.196 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.196 INFO [stderr] 
Dec 11 13:05:16.196 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.196 INFO [stderr]    --> src/codegen.rs:283:17
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr] 283 |                 writeln!(buf, "  mov {}, rax", REGS64[*reg as usize]);
Dec 11 13:05:16.196 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.196 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.196 INFO [stderr] 
Dec 11 13:05:16.196 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.196 INFO [stderr]    --> src/codegen.rs:292:5
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr] 292 |     writeln!(buf, "{}:", ret);
Dec 11 13:05:16.196 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.196 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.196 INFO [stderr] 
Dec 11 13:05:16.196 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.196 INFO [stderr]    --> src/codegen.rs:295:13
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr] 295 |             writeln!(buf, "  pop {}", r);
Dec 11 13:05:16.196 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.196 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.196 INFO [stderr] 
Dec 11 13:05:16.196 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.196 INFO [stderr]    --> src/codegen.rs:298:5
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr] 298 |     writeln!(buf, "  mov rsp, rbp");
Dec 11 13:05:16.196 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.196 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.196 INFO [stderr] 
Dec 11 13:05:16.196 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.196 INFO [stderr]    --> src/codegen.rs:299:5
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr] 299 |     writeln!(buf, "  pop rbp");
Dec 11 13:05:16.196 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.196 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.196 INFO [stderr] 
Dec 11 13:05:16.196 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.196 INFO [stderr]    --> src/codegen.rs:300:5
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr] 300 |     writeln!(buf, "  ret");
Dec 11 13:05:16.196 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.196 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.196 INFO [stderr] 
Dec 11 13:05:16.196 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.196 INFO [stderr]    --> src/codegen.rs:304:5
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr] 304 | /     writeln!(
Dec 11 13:05:16.196 INFO [stderr] 305 | |         buf,
Dec 11 13:05:16.196 INFO [stderr] 306 | |         "  cmp {}, {}",
Dec 11 13:05:16.196 INFO [stderr] 307 | |         REGS64[dst as usize], REGS64[src as usize]
Dec 11 13:05:16.196 INFO [stderr] 308 | |     );
Dec 11 13:05:16.196 INFO [stderr]     | |______^
Dec 11 13:05:16.196 INFO [stderr]     |
Dec 11 13:05:16.196 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.196 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.197 INFO [stderr] 
Dec 11 13:05:16.197 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.197 INFO [stderr]    --> src/codegen.rs:315:5
Dec 11 13:05:16.197 INFO [stderr]     |
Dec 11 13:05:16.197 INFO [stderr] 315 | /     writeln!(
Dec 11 13:05:16.197 INFO [stderr] 316 | |         buf,
Dec 11 13:05:16.197 INFO [stderr] 317 | |         "  movzx {}, {}",
Dec 11 13:05:16.197 INFO [stderr] 318 | |         REGS64[dst as usize], REGS8[dst as usize]
Dec 11 13:05:16.197 INFO [stderr] 319 | |     );
Dec 11 13:05:16.197 INFO [stderr]     | |______^
Dec 11 13:05:16.197 INFO [stderr]     |
Dec 11 13:05:16.197 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.197 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.197 INFO [stderr] 
Dec 11 13:05:16.200 INFO [stderr] 
Dec 11 13:05:16.200 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.200 INFO [stderr]    --> src/codegen.rs:112:21
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr] 112 | /                     writeln!(
Dec 11 13:05:16.200 INFO [stderr] 113 | |                         buf,
Dec 11 13:05:16.200 INFO [stderr] 114 | |                         "  movzx {}, {}",
Dec 11 13:05:16.200 INFO [stderr] 115 | |                         REGS64[*dst as usize], REGS8[*dst as usize]
Dec 11 13:05:16.200 INFO [stderr] 116 | |                     );
Dec 11 13:05:16.200 INFO [stderr]     | |______________________^
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.200 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.200 INFO [stderr] 
Dec 11 13:05:16.200 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.200 INFO [stderr]    --> src/codegen.rs:121:17
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr] 121 | /                 writeln!(
Dec 11 13:05:16.200 INFO [stderr] 122 | |                     buf,
Dec 11 13:05:16.200 INFO [stderr] 123 | |                     "  mov [{}], {}",
Dec 11 13:05:16.200 INFO [stderr] 124 | |                     REGS64[*dst as usize],
Dec 11 13:05:16.200 INFO [stderr] ...   |
Dec 11 13:05:16.200 INFO [stderr] 129 | |                     },
Dec 11 13:05:16.200 INFO [stderr] 130 | |                 );
Dec 11 13:05:16.200 INFO [stderr]     | |__________________^
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.200 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.200 INFO [stderr] 
Dec 11 13:05:16.200 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.200 INFO [stderr]    --> src/codegen.rs:134:17
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr] 134 | /                 writeln!(
Dec 11 13:05:16.200 INFO [stderr] 135 | |                     buf,
Dec 11 13:05:16.200 INFO [stderr] 136 | |                     "  mov [rbp-{}], {}",
Dec 11 13:05:16.200 INFO [stderr] 137 | |                     val,
Dec 11 13:05:16.200 INFO [stderr] ...   |
Dec 11 13:05:16.200 INFO [stderr] 142 | |                     },
Dec 11 13:05:16.200 INFO [stderr] 143 | |                 );
Dec 11 13:05:16.200 INFO [stderr]     | |__________________^
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.200 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.200 INFO [stderr] 
Dec 11 13:05:16.200 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.200 INFO [stderr]    --> src/codegen.rs:147:17
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr] 147 |                 writeln!(buf, ".L{}:", val);
Dec 11 13:05:16.200 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.200 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.200 INFO [stderr] 
Dec 11 13:05:16.200 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.200 INFO [stderr]    --> src/codegen.rs:151:17
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr] 151 |                 writeln!(buf, "  lea {}, {}", REGS64[*reg as usize], label);
Dec 11 13:05:16.200 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.200 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.200 INFO [stderr] 
Dec 11 13:05:16.200 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.200 INFO [stderr]    --> src/codegen.rs:155:17
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr] 155 |                 writeln!(buf, "  cmp {}, 0", REGS64[*reg as usize]);
Dec 11 13:05:16.200 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.200 INFO [stderr]     |
Dec 11 13:05:16.200 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.201 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.201 INFO [stderr] 
Dec 11 13:05:16.201 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.201 INFO [stderr]    --> src/codegen.rs:156:17
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr] 156 |                 writeln!(buf, "  je .L{}", val);
Dec 11 13:05:16.201 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.201 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.201 INFO [stderr] 
Dec 11 13:05:16.201 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.201 INFO [stderr]    --> src/codegen.rs:160:17
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr] 160 |                 writeln!(buf, "  jmp .L{}", val);
Dec 11 13:05:16.201 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.201 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.201 INFO [stderr] 
Dec 11 13:05:16.201 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.201 INFO [stderr]    --> src/codegen.rs:164:17
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr] 164 | /                 writeln!(
Dec 11 13:05:16.201 INFO [stderr] 165 | |                     buf,
Dec 11 13:05:16.201 INFO [stderr] 166 | |                     "  or {},{}",
Dec 11 13:05:16.201 INFO [stderr] 167 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.201 INFO [stderr] 168 | |                 );
Dec 11 13:05:16.201 INFO [stderr]     | |__________________^
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.201 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.201 INFO [stderr] 
Dec 11 13:05:16.201 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.201 INFO [stderr]    --> src/codegen.rs:172:17
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr] 172 | /                 writeln!(
Dec 11 13:05:16.201 INFO [stderr] 173 | |                     buf,
Dec 11 13:05:16.201 INFO [stderr] 174 | |                     "  xor {},{}",
Dec 11 13:05:16.201 INFO [stderr] 175 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.201 INFO [stderr] 176 | |                 );
Dec 11 13:05:16.201 INFO [stderr]     | |__________________^
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.201 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.201 INFO [stderr] 
Dec 11 13:05:16.201 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.201 INFO [stderr]    --> src/codegen.rs:180:17
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr] 180 | /                 writeln!(
Dec 11 13:05:16.201 INFO [stderr] 181 | |                     buf,
Dec 11 13:05:16.201 INFO [stderr] 182 | |                     "  xor {},{}",
Dec 11 13:05:16.201 INFO [stderr] 183 | |                     REGS64[*reg as usize], val
Dec 11 13:05:16.201 INFO [stderr] 184 | |                 );
Dec 11 13:05:16.201 INFO [stderr]     | |__________________^
Dec 11 13:05:16.201 INFO [stderr]     |
Dec 11 13:05:16.201 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.201 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.201 INFO [stderr] 
Dec 11 13:05:16.202 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.202 INFO [stderr]    --> src/codegen.rs:188:17
Dec 11 13:05:16.202 INFO [stderr]     |
Dec 11 13:05:16.202 INFO [stderr] 188 | /                 writeln!(
Dec 11 13:05:16.202 INFO [stderr] 189 | |                     buf,
Dec 11 13:05:16.202 INFO [stderr] 190 | |                     "  and {},{}",
Dec 11 13:05:16.202 INFO [stderr] 191 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.202 INFO [stderr] 192 | |                 );
Dec 11 13:05:16.202 INFO [stderr]     | |__________________^
Dec 11 13:05:16.202 INFO [stderr]     |
Dec 11 13:05:16.202 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.202 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.202 INFO [stderr] 
Dec 11 13:05:16.202 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.202 INFO [stderr]    --> src/codegen.rs:196:17
Dec 11 13:05:16.202 INFO [stderr]     |
Dec 11 13:05:16.202 INFO [stderr] 196 |                 writeln!(buf, "  cmp {}, 0", REGS64[*reg as usize]);
Dec 11 13:05:16.202 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.202 INFO [stderr]     |
Dec 11 13:05:16.202 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.202 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.202 INFO [stderr] 
Dec 11 13:05:16.202 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.202 INFO [stderr]    --> src/codegen.rs:197:17
Dec 11 13:05:16.203 INFO [stderr]     |
Dec 11 13:05:16.203 INFO [stderr] 197 |                 writeln!(buf, "  jne .L{}", val);
Dec 11 13:05:16.203 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.203 INFO [stderr]     |
Dec 11 13:05:16.203 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.203 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.203 INFO [stderr] 
Dec 11 13:05:16.203 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.204 INFO [stderr]    --> src/codegen.rs:201:17
Dec 11 13:05:16.204 INFO [stderr]     |
Dec 11 13:05:16.204 INFO [stderr] 201 |                 writeln!(buf, "  lea {}, [rbp-{}]", REGS64[*reg as usize], val);
Dec 11 13:05:16.204 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.204 INFO [stderr]     |
Dec 11 13:05:16.204 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.204 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.204 INFO [stderr] 
Dec 11 13:05:16.205 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.205 INFO [stderr]    --> src/codegen.rs:205:17
Dec 11 13:05:16.205 INFO [stderr]     |
Dec 11 13:05:16.205 INFO [stderr] 205 | /                 writeln!(
Dec 11 13:05:16.205 INFO [stderr] 206 | |                     buf,
Dec 11 13:05:16.205 INFO [stderr] 207 | |                     "  add {}, {}",
Dec 11 13:05:16.205 INFO [stderr] 208 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.205 INFO [stderr] 209 | |                 );
Dec 11 13:05:16.205 INFO [stderr]     | |__________________^
Dec 11 13:05:16.205 INFO [stderr]     |
Dec 11 13:05:16.205 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.206 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.206 INFO [stderr] 
Dec 11 13:05:16.206 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.206 INFO [stderr]    --> src/codegen.rs:213:17
Dec 11 13:05:16.206 INFO [stderr]     |
Dec 11 13:05:16.206 INFO [stderr] 213 |                 writeln!(buf, "  add {}, {}", REGS64[*reg as usize], val);
Dec 11 13:05:16.206 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.206 INFO [stderr]     |
Dec 11 13:05:16.207 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.207 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.207 INFO [stderr] 
Dec 11 13:05:16.207 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.207 INFO [stderr]    --> src/codegen.rs:217:17
Dec 11 13:05:16.207 INFO [stderr]     |
Dec 11 13:05:16.207 INFO [stderr] 217 | /                 writeln!(
Dec 11 13:05:16.208 INFO [stderr] 218 | |                     buf,
Dec 11 13:05:16.208 INFO [stderr] 219 | |                     "  sub {}, {}",
Dec 11 13:05:16.208 INFO [stderr] 220 | |                     REGS64[*dst as usize], REGS64[*src as usize]
Dec 11 13:05:16.208 INFO [stderr] 221 | |                 );
Dec 11 13:05:16.208 INFO [stderr]     | |__________________^
Dec 11 13:05:16.208 INFO [stderr]     |
Dec 11 13:05:16.208 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.208 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.208 INFO [stderr] 
Dec 11 13:05:16.209 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.209 INFO [stderr]    --> src/codegen.rs:225:17
Dec 11 13:05:16.209 INFO [stderr]     |
Dec 11 13:05:16.209 INFO [stderr] 225 |                 writeln!(buf, "  sub {}, {}", REGS64[*reg as usize], val);
Dec 11 13:05:16.209 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.209 INFO [stderr]     |
Dec 11 13:05:16.209 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.209 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.210 INFO [stderr] 
Dec 11 13:05:16.210 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.210 INFO [stderr]    --> src/codegen.rs:230:17
Dec 11 13:05:16.210 INFO [stderr]     |
Dec 11 13:05:16.210 INFO [stderr] 230 |                 writeln!(buf, "  mov rax, {}", REGS64[*src as usize]);
Dec 11 13:05:16.210 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.210 INFO [stderr]     |
Dec 11 13:05:16.210 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.211 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.211 INFO [stderr] 
Dec 11 13:05:16.211 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.211 INFO [stderr]    --> src/codegen.rs:231:17
Dec 11 13:05:16.211 INFO [stderr]     |
Dec 11 13:05:16.211 INFO [stderr] 231 |                 writeln!(buf, "  mul {}", REGS64[*dst as usize]);
Dec 11 13:05:16.211 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.211 INFO [stderr]     |
Dec 11 13:05:16.212 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.212 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.212 INFO [stderr] 
Dec 11 13:05:16.216 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.216 INFO [stderr]    --> src/codegen.rs:232:17
Dec 11 13:05:16.216 INFO [stderr]     |
Dec 11 13:05:16.216 INFO [stderr] 232 |                 writeln!(buf, "  mov {}, rax", REGS64[*dst as usize]);
Dec 11 13:05:16.216 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.217 INFO [stderr]     |
Dec 11 13:05:16.217 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.217 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.217 INFO [stderr] 
Dec 11 13:05:16.217 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.217 INFO [stderr]    --> src/codegen.rs:236:17
Dec 11 13:05:16.217 INFO [stderr]     |
Dec 11 13:05:16.217 INFO [stderr] 236 |                 writeln!(buf, "  mov rax, {}", val);
Dec 11 13:05:16.217 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.218 INFO [stderr]     |
Dec 11 13:05:16.218 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.218 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.218 INFO [stderr] 
Dec 11 13:05:16.218 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.218 INFO [stderr]    --> src/codegen.rs:237:17
Dec 11 13:05:16.218 INFO [stderr]     |
Dec 11 13:05:16.218 INFO [stderr] 237 |                 writeln!(buf, "  mul {}", REGS64[*reg as usize]);
Dec 11 13:05:16.219 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.219 INFO [stderr]     |
Dec 11 13:05:16.219 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.219 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.219 INFO [stderr] 
Dec 11 13:05:16.219 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.219 INFO [stderr]    --> src/codegen.rs:238:17
Dec 11 13:05:16.219 INFO [stderr]     |
Dec 11 13:05:16.219 INFO [stderr] 238 |                 writeln!(buf, "  mov {}, rax", REGS64[*reg as usize]);
Dec 11 13:05:16.220 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.220 INFO [stderr]     |
Dec 11 13:05:16.220 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.220 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.220 INFO [stderr] 
Dec 11 13:05:16.220 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.220 INFO [stderr]    --> src/codegen.rs:242:17
Dec 11 13:05:16.220 INFO [stderr]     |
Dec 11 13:05:16.220 INFO [stderr] 242 |                 writeln!(buf, "  mov rax, {}", REGS64[*dst as usize]);
Dec 11 13:05:16.220 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.221 INFO [stderr]     |
Dec 11 13:05:16.221 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.221 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.221 INFO [stderr] 
Dec 11 13:05:16.221 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.221 INFO [stderr]    --> src/codegen.rs:243:17
Dec 11 13:05:16.222 INFO [stderr]     |
Dec 11 13:05:16.222 INFO [stderr] 243 |                 writeln!(buf, "  cqo");
Dec 11 13:05:16.222 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.222 INFO [stderr]     |
Dec 11 13:05:16.222 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.222 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.222 INFO [stderr] 
Dec 11 13:05:16.222 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.222 INFO [stderr]    --> src/codegen.rs:244:17
Dec 11 13:05:16.223 INFO [stderr]     |
Dec 11 13:05:16.223 INFO [stderr] 244 |                 writeln!(buf, "  div {}", REGS64[*src as usize]);
Dec 11 13:05:16.223 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.223 INFO [stderr]     |
Dec 11 13:05:16.223 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.223 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.223 INFO [stderr] 
Dec 11 13:05:16.224 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.224 INFO [stderr]    --> src/codegen.rs:245:17
Dec 11 13:05:16.224 INFO [stderr]     |
Dec 11 13:05:16.224 INFO [stderr] 245 |                 writeln!(buf, "  mov {}, rax", REGS64[*dst as usize]);
Dec 11 13:05:16.224 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.224 INFO [stderr]     |
Dec 11 13:05:16.224 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.224 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.224 INFO [stderr] 
Dec 11 13:05:16.225 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.225 INFO [stderr]    --> src/codegen.rs:249:17
Dec 11 13:05:16.225 INFO [stderr]     |
Dec 11 13:05:16.225 INFO [stderr] 249 |                 writeln!(buf, "  mov rax, {}", REGS64[*dst as usize]);
Dec 11 13:05:16.225 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.225 INFO [stderr]     |
Dec 11 13:05:16.225 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.225 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.225 INFO [stderr] 
Dec 11 13:05:16.226 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.226 INFO [stderr]    --> src/codegen.rs:250:17
Dec 11 13:05:16.226 INFO [stderr]     |
Dec 11 13:05:16.226 INFO [stderr] 250 |                 writeln!(buf, "  cqo");
Dec 11 13:05:16.226 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.226 INFO [stderr]     |
Dec 11 13:05:16.226 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.226 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.227 INFO [stderr] 
Dec 11 13:05:16.227 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.227 INFO [stderr]    --> src/codegen.rs:251:17
Dec 11 13:05:16.227 INFO [stderr]     |
Dec 11 13:05:16.227 INFO [stderr] 251 |                 writeln!(buf, "  div {}", REGS64[*src as usize]);
Dec 11 13:05:16.227 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.227 INFO [stderr]     |
Dec 11 13:05:16.227 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.227 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.228 INFO [stderr] 
Dec 11 13:05:16.228 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.228 INFO [stderr]    --> src/codegen.rs:252:17
Dec 11 13:05:16.228 INFO [stderr]     |
Dec 11 13:05:16.228 INFO [stderr] 252 |                 writeln!(buf, "  mov {}, rdx", REGS64[*dst as usize]);
Dec 11 13:05:16.228 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.228 INFO [stderr]     |
Dec 11 13:05:16.228 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.228 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.229 INFO [stderr] 
Dec 11 13:05:16.229 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.229 INFO [stderr]    --> src/codegen.rs:256:17
Dec 11 13:05:16.229 INFO [stderr]     |
Dec 11 13:05:16.229 INFO [stderr] 256 |                 writeln!(buf, "  mov cl, {}", REGS8[*src as usize]);
Dec 11 13:05:16.229 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.229 INFO [stderr]     |
Dec 11 13:05:16.229 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.229 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.230 INFO [stderr] 
Dec 11 13:05:16.230 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.230 INFO [stderr]    --> src/codegen.rs:257:17
Dec 11 13:05:16.230 INFO [stderr]     |
Dec 11 13:05:16.230 INFO [stderr] 257 |                 writeln!(buf, "  shl {}, cl", REGS64[*dst as usize]);
Dec 11 13:05:16.230 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.230 INFO [stderr]     |
Dec 11 13:05:16.230 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.230 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.230 INFO [stderr] 
Dec 11 13:05:16.231 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.231 INFO [stderr]    --> src/codegen.rs:261:17
Dec 11 13:05:16.231 INFO [stderr]     |
Dec 11 13:05:16.231 INFO [stderr] 261 |                 writeln!(buf, "  mov cl, {}", REGS8[*src as usize]);
Dec 11 13:05:16.231 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.231 INFO [stderr]     |
Dec 11 13:05:16.231 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.231 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.231 INFO [stderr] 
Dec 11 13:05:16.232 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.232 INFO [stderr]    --> src/codegen.rs:262:17
Dec 11 13:05:16.232 INFO [stderr]     |
Dec 11 13:05:16.232 INFO [stderr] 262 |                 writeln!(buf, "  shr {}, cl", REGS64[*dst as usize]);
Dec 11 13:05:16.232 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.232 INFO [stderr]     |
Dec 11 13:05:16.232 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.232 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.232 INFO [stderr] 
Dec 11 13:05:16.233 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.233 INFO [stderr]    --> src/codegen.rs:266:17
Dec 11 13:05:16.233 INFO [stderr]     |
Dec 11 13:05:16.233 INFO [stderr] 266 |                 writeln!(buf, "  neg {}", REGS64[*src as usize]);
Dec 11 13:05:16.233 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.233 INFO [stderr]     |
Dec 11 13:05:16.233 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.233 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.233 INFO [stderr] 
Dec 11 13:05:16.234 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.234 INFO [stderr]    --> src/codegen.rs:273:21
Dec 11 13:05:16.234 INFO [stderr]     |
Dec 11 13:05:16.234 INFO [stderr] 273 |                     writeln!(buf, "  mov {}, {}", caller64[i], REGS64[*arg as usize]);
Dec 11 13:05:16.234 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.234 INFO [stderr]     |
Dec 11 13:05:16.234 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.234 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.234 INFO [stderr] 
Dec 11 13:05:16.235 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.235 INFO [stderr]    --> src/codegen.rs:276:17
Dec 11 13:05:16.235 INFO [stderr]     |
Dec 11 13:05:16.235 INFO [stderr] 276 |                 writeln!(buf, "  push r10");
Dec 11 13:05:16.235 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.235 INFO [stderr]     |
Dec 11 13:05:16.235 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.235 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.235 INFO [stderr] 
Dec 11 13:05:16.236 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.236 INFO [stderr]    --> src/codegen.rs:277:17
Dec 11 13:05:16.236 INFO [stderr]     |
Dec 11 13:05:16.236 INFO [stderr] 277 |                 writeln!(buf, "  push r11");
Dec 11 13:05:16.236 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.236 INFO [stderr]     |
Dec 11 13:05:16.236 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.236 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.236 INFO [stderr] 
Dec 11 13:05:16.237 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.237 INFO [stderr]    --> src/codegen.rs:278:17
Dec 11 13:05:16.237 INFO [stderr]     |
Dec 11 13:05:16.237 INFO [stderr] 278 |                 writeln!(buf, "  mov rax, 0");
Dec 11 13:05:16.237 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.237 INFO [stderr]     |
Dec 11 13:05:16.237 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.237 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.237 INFO [stderr] 
Dec 11 13:05:16.237 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.237 INFO [stderr]    --> src/codegen.rs:279:17
Dec 11 13:05:16.237 INFO [stderr]     |
Dec 11 13:05:16.237 INFO [stderr] 279 |                 writeln!(buf, "  call {}", name);
Dec 11 13:05:16.238 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.238 INFO [stderr]     |
Dec 11 13:05:16.238 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.244 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.244 INFO [stderr] 
Dec 11 13:05:16.244 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.244 INFO [stderr]    --> src/codegen.rs:280:17
Dec 11 13:05:16.244 INFO [stderr]     |
Dec 11 13:05:16.244 INFO [stderr] 280 |                 writeln!(buf, "  pop r11");
Dec 11 13:05:16.244 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.245 INFO [stderr]     |
Dec 11 13:05:16.245 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.245 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.245 INFO [stderr] 
Dec 11 13:05:16.245 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.245 INFO [stderr]    --> src/codegen.rs:281:17
Dec 11 13:05:16.245 INFO [stderr]     |
Dec 11 13:05:16.245 INFO [stderr] 281 |                 writeln!(buf, "  pop r10");
Dec 11 13:05:16.245 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.245 INFO [stderr]     |
Dec 11 13:05:16.246 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.246 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.246 INFO [stderr] 
Dec 11 13:05:16.246 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.246 INFO [stderr]    --> src/codegen.rs:283:17
Dec 11 13:05:16.246 INFO [stderr]     |
Dec 11 13:05:16.246 INFO [stderr] 283 |                 writeln!(buf, "  mov {}, rax", REGS64[*reg as usize]);
Dec 11 13:05:16.246 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.246 INFO [stderr]     |
Dec 11 13:05:16.247 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.247 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.247 INFO [stderr] 
Dec 11 13:05:16.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.247 INFO [stderr]    --> src/codegen.rs:292:5
Dec 11 13:05:16.247 INFO [stderr]     |
Dec 11 13:05:16.247 INFO [stderr] 292 |     writeln!(buf, "{}:", ret);
Dec 11 13:05:16.247 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.247 INFO [stderr]     |
Dec 11 13:05:16.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.248 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.248 INFO [stderr] 
Dec 11 13:05:16.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.248 INFO [stderr]    --> src/codegen.rs:295:13
Dec 11 13:05:16.248 INFO [stderr]     |
Dec 11 13:05:16.248 INFO [stderr] 295 |             writeln!(buf, "  pop {}", r);
Dec 11 13:05:16.248 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.248 INFO [stderr]     |
Dec 11 13:05:16.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.249 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.249 INFO [stderr] 
Dec 11 13:05:16.249 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.249 INFO [stderr]    --> src/codegen.rs:298:5
Dec 11 13:05:16.249 INFO [stderr]     |
Dec 11 13:05:16.249 INFO [stderr] 298 |     writeln!(buf, "  mov rsp, rbp");
Dec 11 13:05:16.249 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.249 INFO [stderr]     |
Dec 11 13:05:16.249 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.249 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.250 INFO [stderr] 
Dec 11 13:05:16.250 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.250 INFO [stderr]    --> src/codegen.rs:299:5
Dec 11 13:05:16.250 INFO [stderr]     |
Dec 11 13:05:16.250 INFO [stderr] 299 |     writeln!(buf, "  pop rbp");
Dec 11 13:05:16.250 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.250 INFO [stderr]     |
Dec 11 13:05:16.250 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.250 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.250 INFO [stderr] 
Dec 11 13:05:16.251 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.251 INFO [stderr]    --> src/codegen.rs:300:5
Dec 11 13:05:16.251 INFO [stderr]     |
Dec 11 13:05:16.251 INFO [stderr] 300 |     writeln!(buf, "  ret");
Dec 11 13:05:16.251 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:05:16.251 INFO [stderr]     |
Dec 11 13:05:16.251 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.251 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.251 INFO [stderr] 
Dec 11 13:05:16.252 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.252 INFO [stderr]    --> src/codegen.rs:304:5
Dec 11 13:05:16.252 INFO [stderr]     |
Dec 11 13:05:16.252 INFO [stderr] 304 | /     writeln!(
Dec 11 13:05:16.252 INFO [stderr] 305 | |         buf,
Dec 11 13:05:16.252 INFO [stderr] 306 | |         "  cmp {}, {}",
Dec 11 13:05:16.252 INFO [stderr] 307 | |         REGS64[dst as usize], REGS64[src as usize]
Dec 11 13:05:16.252 INFO [stderr] 308 | |     );
Dec 11 13:05:16.252 INFO [stderr]     | |______^
Dec 11 13:05:16.252 INFO [stderr]     |
Dec 11 13:05:16.252 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.253 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.253 INFO [stderr] 
Dec 11 13:05:16.253 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 13:05:16.253 INFO [stderr]    --> src/codegen.rs:315:5
Dec 11 13:05:16.253 INFO [stderr]     |
Dec 11 13:05:16.253 INFO [stderr] 315 | /     writeln!(
Dec 11 13:05:16.253 INFO [stderr] 316 | |         buf,
Dec 11 13:05:16.253 INFO [stderr] 317 | |         "  movzx {}, {}",
Dec 11 13:05:16.253 INFO [stderr] 318 | |         REGS64[dst as usize], REGS8[dst as usize]
Dec 11 13:05:16.253 INFO [stderr] 319 | |     );
Dec 11 13:05:16.253 INFO [stderr]     | |______^
Dec 11 13:05:16.253 INFO [stderr]     |
Dec 11 13:05:16.254 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 13:05:16.254 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 13:05:16.254 INFO [stderr] 
Dec 11 13:05:17.096 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 13:05:17.096 INFO [stderr]  --> src/bin/rcc.rs:4:1
Dec 11 13:05:17.096 INFO [stderr]   |
Dec 11 13:05:17.096 INFO [stderr] 4 | #[macro_use]
Dec 11 13:05:17.096 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 13:05:17.096 INFO [stderr]   |
Dec 11 13:05:17.096 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 13:05:17.096 INFO [stderr] 
Dec 11 13:05:17.120 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 13:05:17.120 INFO [stderr]  --> src/bin/rcc.rs:4:1
Dec 11 13:05:17.120 INFO [stderr]   |
Dec 11 13:05:17.120 INFO [stderr] 4 | #[macro_use]
Dec 11 13:05:17.120 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 13:05:17.120 INFO [stderr]   |
Dec 11 13:05:17.120 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 13:05:17.120 INFO [stderr] 
Dec 11 13:05:17.144 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 13:05:17.144 INFO [stderr]  --> src/bin/dump.rs:5:1
Dec 11 13:05:17.144 INFO [stderr]   |
Dec 11 13:05:17.144 INFO [stderr] 5 | #[macro_use]
Dec 11 13:05:17.144 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 13:05:17.144 INFO [stderr]   |
Dec 11 13:05:17.144 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 13:05:17.144 INFO [stderr] 
Dec 11 13:05:17.344 INFO [stderr] warning: unused `#[macro_use]` import
Dec 11 13:05:17.344 INFO [stderr]  --> src/bin/dump.rs:5:1
Dec 11 13:05:17.344 INFO [stderr]   |
Dec 11 13:05:17.344 INFO [stderr] 5 | #[macro_use]
Dec 11 13:05:17.344 INFO [stderr]   | ^^^^^^^^^^^^
Dec 11 13:05:17.344 INFO [stderr]   |
Dec 11 13:05:17.344 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 13:05:17.344 INFO [stderr] 
Dec 11 13:05:17.788 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.06s
Dec 11 13:05:17.792 INFO [stderr] su: No module specific data is present
Dec 11 13:05:18.619 INFO running `"docker" "inspect" "e2f3ede70edf5cedd750eedee6d2c5d097f1101ba95906f73f1a0e1fcc20a291"`
Dec 11 13:05:18.958 INFO running `"docker" "rm" "-f" "e2f3ede70edf5cedd750eedee6d2c5d097f1101ba95906f73f1a0e1fcc20a291"`
Dec 11 13:05:19.294 INFO [stdout] e2f3ede70edf5cedd750eedee6d2c5d097f1101ba95906f73f1a0e1fcc20a291