Dec 17 20:34:24.961 INFO checking lonnng/lua-rs against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 20:34:24.961 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/lonnng/lua-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:34:25.475 INFO [stdout] b507c49f4a8459c9daa1de466069c0ee64dfbf0be4fc55fabe365a509d074861
Dec 17 20:34:25.477 INFO running `"docker" "start" "-a" "b507c49f4a8459c9daa1de466069c0ee64dfbf0be4fc55fabe365a509d074861"`
Dec 17 20:34:28.336 INFO [stderr]     Checking byteorder v1.2.3
Dec 17 20:34:28.336 INFO [stderr]     Checking iovec v0.1.2
Dec 17 20:34:30.090 INFO [stderr]     Checking bytes v0.4.8
Dec 17 20:34:31.918 INFO [stderr]     Checking lua v0.1.0 (/opt/crater/workdir)
Dec 17 20:34:32.864 INFO [stderr] warning: unused import: `state::State`
Dec 17 20:34:32.864 INFO [stderr]  --> src/scanner.rs:3:5
Dec 17 20:34:32.864 INFO [stderr]   |
Dec 17 20:34:32.864 INFO [stderr] 3 | use state::State;
Dec 17 20:34:32.864 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 17 20:34:32.864 INFO [stderr]   |
Dec 17 20:34:32.864 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:34:32.865 INFO [stderr] 
Dec 17 20:34:32.865 INFO [stderr] warning: unused import: `std::mem`
Dec 17 20:34:32.865 INFO [stderr]  --> src/scanner.rs:6:5
Dec 17 20:34:32.865 INFO [stderr]   |
Dec 17 20:34:32.865 INFO [stderr] 6 | use std::mem;
Dec 17 20:34:32.865 INFO [stderr]   |     ^^^^^^^^
Dec 17 20:34:32.865 INFO [stderr] 
Dec 17 20:34:32.865 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 20:34:32.865 INFO [stderr]    --> src/scanner.rs:368:25
Dec 17 20:34:32.865 INFO [stderr]     |
Dec 17 20:34:32.865 INFO [stderr] 368 |                         /// Escape charactors
Dec 17 20:34:32.865 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:34:32.865 INFO [stderr]     |
Dec 17 20:34:32.865 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 20:34:32.865 INFO [stderr] 
Dec 17 20:34:33.308 INFO [stderr] warning: unused import: `state::State`
Dec 17 20:34:33.309 INFO [stderr]  --> src/scanner.rs:3:5
Dec 17 20:34:33.309 INFO [stderr]   |
Dec 17 20:34:33.309 INFO [stderr] 3 | use state::State;
Dec 17 20:34:33.310 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 17 20:34:33.310 INFO [stderr]   |
Dec 17 20:34:33.310 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:34:33.310 INFO [stderr] 
Dec 17 20:34:33.311 INFO [stderr] warning: unused import: `std::mem`
Dec 17 20:34:33.311 INFO [stderr]  --> src/scanner.rs:6:5
Dec 17 20:34:33.311 INFO [stderr]   |
Dec 17 20:34:33.312 INFO [stderr] 6 | use std::mem;
Dec 17 20:34:33.312 INFO [stderr]   |     ^^^^^^^^
Dec 17 20:34:33.312 INFO [stderr] 
Dec 17 20:34:33.312 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 20:34:33.313 INFO [stderr]    --> src/scanner.rs:368:25
Dec 17 20:34:33.313 INFO [stderr]     |
Dec 17 20:34:33.313 INFO [stderr] 368 |                         /// Escape charactors
Dec 17 20:34:33.314 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:34:33.314 INFO [stderr]     |
Dec 17 20:34:33.315 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 20:34:33.315 INFO [stderr] 
Dec 17 20:34:33.315 INFO [stderr] warning: unused import: `state::State`
Dec 17 20:34:33.316 INFO [stderr]  --> src/scanner.rs:3:5
Dec 17 20:34:33.316 INFO [stderr]   |
Dec 17 20:34:33.316 INFO [stderr] 3 | use state::State;
Dec 17 20:34:33.316 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 17 20:34:33.317 INFO [stderr]   |
Dec 17 20:34:33.317 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:34:33.317 INFO [stderr] 
Dec 17 20:34:33.317 INFO [stderr] warning: unused import: `std::mem`
Dec 17 20:34:33.317 INFO [stderr]  --> src/scanner.rs:6:5
Dec 17 20:34:33.318 INFO [stderr]   |
Dec 17 20:34:33.318 INFO [stderr] 6 | use std::mem;
Dec 17 20:34:33.318 INFO [stderr]   |     ^^^^^^^^
Dec 17 20:34:33.318 INFO [stderr] 
Dec 17 20:34:33.319 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 20:34:33.319 INFO [stderr]    --> src/scanner.rs:368:25
Dec 17 20:34:33.319 INFO [stderr]     |
Dec 17 20:34:33.319 INFO [stderr] 368 |                         /// Escape charactors
Dec 17 20:34:33.320 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:34:33.320 INFO [stderr]     |
Dec 17 20:34:33.320 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 20:34:33.320 INFO [stderr] 
Dec 17 20:34:33.337 INFO [stderr] warning: unused imports: `Read`, `Write`
Dec 17 20:34:33.337 INFO [stderr]    --> src/scanner.rs:643:19
Dec 17 20:34:33.337 INFO [stderr]     |
Dec 17 20:34:33.338 INFO [stderr] 643 |     use std::io::{Read, Write};
Dec 17 20:34:33.338 INFO [stderr]     |                   ^^^^  ^^^^^
Dec 17 20:34:33.338 INFO [stderr] 
Dec 17 20:34:33.496 INFO [stderr] warning: unreachable expression
Dec 17 20:34:33.497 INFO [stderr]    --> src/scanner.rs:238:9
Dec 17 20:34:33.497 INFO [stderr]     |
Dec 17 20:34:33.497 INFO [stderr] 238 |         unreachable!()
Dec 17 20:34:33.498 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:34:33.504 INFO [stderr]     |
Dec 17 20:34:33.505 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 17 20:34:33.505 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 17 20:34:33.505 INFO [stderr] 
Dec 17 20:34:33.544 INFO [stderr] warning: unreachable expression
Dec 17 20:34:33.544 INFO [stderr]    --> src/scanner.rs:355:9
Dec 17 20:34:33.545 INFO [stderr]     |
Dec 17 20:34:33.545 INFO [stderr] 355 |         unreachable!()
Dec 17 20:34:33.545 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:34:33.548 INFO [stderr]     |
Dec 17 20:34:33.549 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 17 20:34:33.549 INFO [stderr] 
Dec 17 20:34:33.685 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
Dec 17 20:34:33.685 INFO [stderr]    --> src/scanner.rs:580:23
Dec 17 20:34:33.685 INFO [stderr]     |
Dec 17 20:34:33.686 INFO [stderr] 580 |             let r = s.trim_left_matches("0").to_string();
Dec 17 20:34:33.686 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^
Dec 17 20:34:33.686 INFO [stderr]     |
Dec 17 20:34:33.687 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 17 20:34:33.687 INFO [stderr] 
Dec 17 20:34:33.901 INFO [stderr] warning: unreachable expression
Dec 17 20:34:33.901 INFO [stderr]    --> src/scanner.rs:238:9
Dec 17 20:34:33.901 INFO [stderr]     |
Dec 17 20:34:33.901 INFO [stderr] 238 |         unreachable!()
Dec 17 20:34:33.901 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:34:33.901 INFO [stderr]     |
Dec 17 20:34:33.901 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 17 20:34:33.908 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 17 20:34:33.908 INFO [stderr] 
Dec 17 20:34:33.944 INFO [stderr] warning: unreachable expression
Dec 17 20:34:33.945 INFO [stderr]    --> src/scanner.rs:355:9
Dec 17 20:34:33.945 INFO [stderr]     |
Dec 17 20:34:33.945 INFO [stderr] 355 |         unreachable!()
Dec 17 20:34:33.946 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:34:33.946 INFO [stderr] warning: unreachable expression
Dec 17 20:34:33.946 INFO [stderr]    --> src/scanner.rs:238:9
Dec 17 20:34:33.947 INFO [stderr]     |
Dec 17 20:34:33.947 INFO [stderr] 238 |         unreachable!()
Dec 17 20:34:33.947 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:34:33.947 INFO [stderr]     |
Dec 17 20:34:33.947 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 17 20:34:33.947 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 17 20:34:33.947 INFO [stderr] 
Dec 17 20:34:33.960 INFO [stderr]     |
Dec 17 20:34:33.961 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 17 20:34:33.961 INFO [stderr] 
Dec 17 20:34:34.001 INFO [stderr] warning: unreachable expression
Dec 17 20:34:34.002 INFO [stderr]    --> src/scanner.rs:355:9
Dec 17 20:34:34.002 INFO [stderr]     |
Dec 17 20:34:34.002 INFO [stderr] 355 |         unreachable!()
Dec 17 20:34:34.003 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:34:34.003 INFO [stderr]     |
Dec 17 20:34:34.004 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 17 20:34:34.004 INFO [stderr] 
Dec 17 20:34:34.087 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
Dec 17 20:34:34.087 INFO [stderr]    --> src/scanner.rs:580:23
Dec 17 20:34:34.088 INFO [stderr]     |
Dec 17 20:34:34.088 INFO [stderr] 580 |             let r = s.trim_left_matches("0").to_string();
Dec 17 20:34:34.088 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^
Dec 17 20:34:34.104 INFO [stderr]     |
Dec 17 20:34:34.105 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 17 20:34:34.105 INFO [stderr] 
Dec 17 20:34:34.168 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
Dec 17 20:34:34.169 INFO [stderr]    --> src/scanner.rs:580:23
Dec 17 20:34:34.169 INFO [stderr]     |
Dec 17 20:34:34.169 INFO [stderr] 580 |             let r = s.trim_left_matches("0").to_string();
Dec 17 20:34:34.170 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^
Dec 17 20:34:34.170 INFO [stderr]     |
Dec 17 20:34:34.171 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 17 20:34:34.171 INFO [stderr] 
Dec 17 20:34:35.200 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.200 INFO [stderr]    --> src/compiler.rs:933:21
Dec 17 20:34:35.200 INFO [stderr]     |
Dec 17 20:34:35.200 INFO [stderr] 933 |                     reg += self.compile_expr(reg, expr, expr_ctx);
Dec 17 20:34:35.200 INFO [stderr]     |                     ^^^
Dec 17 20:34:35.216 INFO [stderr]     |
Dec 17 20:34:35.217 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 17 20:34:35.217 INFO [stderr] 
Dec 17 20:34:35.217 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.217 INFO [stderr]    --> src/compiler.rs:937:21
Dec 17 20:34:35.217 INFO [stderr]     |
Dec 17 20:34:35.217 INFO [stderr] 937 |                     reg += self.compile_expr(reg, expr, &ExprContext::with_opt(0));
Dec 17 20:34:35.217 INFO [stderr]     |                     ^^^
Dec 17 20:34:35.217 INFO [stderr] 
Dec 17 20:34:35.217 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.217 INFO [stderr]     --> src/compiler.rs:1020:17
Dec 17 20:34:35.217 INFO [stderr]      |
Dec 17 20:34:35.217 INFO [stderr] 1020 |                 reg += self.compile_expr(reg, rhs, &ExprContext::with_opt(0));
Dec 17 20:34:35.217 INFO [stderr]      |                 ^^^
Dec 17 20:34:35.217 INFO [stderr] 
Dec 17 20:34:35.218 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.218 INFO [stderr]     --> src/compiler.rs:1676:21
Dec 17 20:34:35.218 INFO [stderr]      |
Dec 17 20:34:35.218 INFO [stderr] 1676 |                     reg += self.compile_expr(reg, &exprs[0], &ExprContext::with_opt(-2));
Dec 17 20:34:35.218 INFO [stderr]      |                     ^^^
Dec 17 20:34:35.218 INFO [stderr] 
Dec 17 20:34:35.326 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:34:35.326 INFO [stderr]    --> src/scanner.rs:475:17
Dec 17 20:34:35.326 INFO [stderr]     |
Dec 17 20:34:35.326 INFO [stderr] 475 |             let mut cvalue = c as u32;
Dec 17 20:34:35.326 INFO [stderr]     |                 ----^^^^^^
Dec 17 20:34:35.326 INFO [stderr]     |                 |
Dec 17 20:34:35.326 INFO [stderr]     |                 help: remove this `mut`
Dec 17 20:34:35.326 INFO [stderr]     |
Dec 17 20:34:35.326 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 20:34:35.326 INFO [stderr] 
Dec 17 20:34:35.332 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:34:35.332 INFO [stderr]    --> src/scanner.rs:517:49
Dec 17 20:34:35.332 INFO [stderr]     |
Dec 17 20:34:35.332 INFO [stderr] 517 |             let (mut fraction, mut latest_char, mut count) = self.read_hexadecimal(0.0);
Dec 17 20:34:35.332 INFO [stderr]     |                                                 ----^^^^^
Dec 17 20:34:35.332 INFO [stderr]     |                                                 |
Dec 17 20:34:35.332 INFO [stderr]     |                                                 help: remove this `mut`
Dec 17 20:34:35.352 INFO [stderr] 
Dec 17 20:34:35.610 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.610 INFO [stderr]    --> src/compiler.rs:933:21
Dec 17 20:34:35.610 INFO [stderr]     |
Dec 17 20:34:35.610 INFO [stderr] 933 |                     reg += self.compile_expr(reg, expr, expr_ctx);
Dec 17 20:34:35.610 INFO [stderr]     |                     ^^^
Dec 17 20:34:35.624 INFO [stderr]     |
Dec 17 20:34:35.624 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 17 20:34:35.624 INFO [stderr] 
Dec 17 20:34:35.625 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.625 INFO [stderr]    --> src/compiler.rs:937:21
Dec 17 20:34:35.625 INFO [stderr]     |
Dec 17 20:34:35.625 INFO [stderr] 937 |                     reg += self.compile_expr(reg, expr, &ExprContext::with_opt(0));
Dec 17 20:34:35.625 INFO [stderr]     |                     ^^^
Dec 17 20:34:35.625 INFO [stderr] 
Dec 17 20:34:35.625 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.625 INFO [stderr]     --> src/compiler.rs:1020:17
Dec 17 20:34:35.625 INFO [stderr]      |
Dec 17 20:34:35.625 INFO [stderr] 1020 |                 reg += self.compile_expr(reg, rhs, &ExprContext::with_opt(0));
Dec 17 20:34:35.625 INFO [stderr]      |                 ^^^
Dec 17 20:34:35.625 INFO [stderr] 
Dec 17 20:34:35.626 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.626 INFO [stderr]     --> src/compiler.rs:1676:21
Dec 17 20:34:35.626 INFO [stderr]      |
Dec 17 20:34:35.626 INFO [stderr] 1676 |                     reg += self.compile_expr(reg, &exprs[0], &ExprContext::with_opt(-2));
Dec 17 20:34:35.626 INFO [stderr]      |                     ^^^
Dec 17 20:34:35.626 INFO [stderr] 
Dec 17 20:34:35.730 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:34:35.730 INFO [stderr]    --> src/scanner.rs:475:17
Dec 17 20:34:35.730 INFO [stderr]     |
Dec 17 20:34:35.730 INFO [stderr] 475 |             let mut cvalue = c as u32;
Dec 17 20:34:35.730 INFO [stderr]     |                 ----^^^^^^
Dec 17 20:34:35.730 INFO [stderr]     |                 |
Dec 17 20:34:35.731 INFO [stderr]     |                 help: remove this `mut`
Dec 17 20:34:35.731 INFO [stderr]     |
Dec 17 20:34:35.731 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 20:34:35.731 INFO [stderr] 
Dec 17 20:34:35.738 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:34:35.738 INFO [stderr]    --> src/scanner.rs:517:49
Dec 17 20:34:35.738 INFO [stderr]     |
Dec 17 20:34:35.738 INFO [stderr] 517 |             let (mut fraction, mut latest_char, mut count) = self.read_hexadecimal(0.0);
Dec 17 20:34:35.738 INFO [stderr]     |                                                 ----^^^^^
Dec 17 20:34:35.738 INFO [stderr]     |                                                 |
Dec 17 20:34:35.738 INFO [stderr]     |                                                 help: remove this `mut`
Dec 17 20:34:35.756 INFO [stderr] 
Dec 17 20:34:35.780 INFO [stderr] warning: unused variable: `res`
Dec 17 20:34:35.780 INFO [stderr]    --> src/scanner.rs:732:13
Dec 17 20:34:35.780 INFO [stderr]     |
Dec 17 20:34:35.780 INFO [stderr] 732 |         let res = scanner.scan();
Dec 17 20:34:35.780 INFO [stderr]     |             ^^^ help: consider using `_res` instead
Dec 17 20:34:35.781 INFO [stderr]     |
Dec 17 20:34:35.781 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 20:34:35.781 INFO [stderr] 
Dec 17 20:34:35.783 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.783 INFO [stderr]    --> src/compiler.rs:933:21
Dec 17 20:34:35.783 INFO [stderr]     |
Dec 17 20:34:35.783 INFO [stderr] 933 |                     reg += self.compile_expr(reg, expr, expr_ctx);
Dec 17 20:34:35.783 INFO [stderr]     |                     ^^^
Dec 17 20:34:35.783 INFO [stderr]     |
Dec 17 20:34:35.784 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 17 20:34:35.784 INFO [stderr] 
Dec 17 20:34:35.784 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.784 INFO [stderr]    --> src/compiler.rs:937:21
Dec 17 20:34:35.784 INFO [stderr]     |
Dec 17 20:34:35.784 INFO [stderr] 937 |                     reg += self.compile_expr(reg, expr, &ExprContext::with_opt(0));
Dec 17 20:34:35.784 INFO [stderr]     |                     ^^^
Dec 17 20:34:35.784 INFO [stderr] 
Dec 17 20:34:35.784 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.784 INFO [stderr]     --> src/compiler.rs:1020:17
Dec 17 20:34:35.784 INFO [stderr]      |
Dec 17 20:34:35.784 INFO [stderr] 1020 |                 reg += self.compile_expr(reg, rhs, &ExprContext::with_opt(0));
Dec 17 20:34:35.784 INFO [stderr]      |                 ^^^
Dec 17 20:34:35.784 INFO [stderr] 
Dec 17 20:34:35.797 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:34:35.797 INFO [stderr]     --> src/compiler.rs:1676:21
Dec 17 20:34:35.797 INFO [stderr]      |
Dec 17 20:34:35.797 INFO [stderr] 1676 |                     reg += self.compile_expr(reg, &exprs[0], &ExprContext::with_opt(-2));
Dec 17 20:34:35.797 INFO [stderr]      |                     ^^^
Dec 17 20:34:35.797 INFO [stderr] 
Dec 17 20:34:35.890 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:34:35.890 INFO [stderr]    --> src/scanner.rs:475:17
Dec 17 20:34:35.890 INFO [stderr]     |
Dec 17 20:34:35.890 INFO [stderr] 475 |             let mut cvalue = c as u32;
Dec 17 20:34:35.890 INFO [stderr]     |                 ----^^^^^^
Dec 17 20:34:35.890 INFO [stderr]     |                 |
Dec 17 20:34:35.890 INFO [stderr]     |                 help: remove this `mut`
Dec 17 20:34:35.890 INFO [stderr]     |
Dec 17 20:34:35.890 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 20:34:35.890 INFO [stderr] 
Dec 17 20:34:35.908 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:34:35.908 INFO [stderr]    --> src/scanner.rs:517:49
Dec 17 20:34:35.908 INFO [stderr]     |
Dec 17 20:34:35.908 INFO [stderr] 517 |             let (mut fraction, mut latest_char, mut count) = self.read_hexadecimal(0.0);
Dec 17 20:34:35.908 INFO [stderr]     |                                                 ----^^^^^
Dec 17 20:34:35.909 INFO [stderr]     |                                                 |
Dec 17 20:34:35.909 INFO [stderr]     |                                                 help: remove this `mut`
Dec 17 20:34:35.909 INFO [stderr] 
Dec 17 20:34:37.364 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.11s
Dec 17 20:34:38.867 INFO running `"docker" "inspect" "b507c49f4a8459c9daa1de466069c0ee64dfbf0be4fc55fabe365a509d074861"`
Dec 17 20:34:39.240 INFO running `"docker" "rm" "-f" "b507c49f4a8459c9daa1de466069c0ee64dfbf0be4fc55fabe365a509d074861"`
Dec 17 20:34:39.640 INFO [stdout] b507c49f4a8459c9daa1de466069c0ee64dfbf0be4fc55fabe365a509d074861