Nov 18 17:24:16.892 INFO testing comacro-0.0.1 against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 18 17:24:16.893 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt build --frozen" "-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"`
Nov 18 17:24:17.093 INFO [stdout] 83a685d06ea2f5708e469e425dd58e7074950b7bc52ba46745c7ff86c1089753
Nov 18 17:24:17.096 INFO running `"docker" "start" "-a" "83a685d06ea2f5708e469e425dd58e7074950b7bc52ba46745c7ff86c1089753"`
Nov 18 17:24:17.497 INFO [stderr] usermod: no changes
Nov 18 17:24:17.551 INFO [stderr]    Compiling log v0.4.6
Nov 18 17:24:17.551 INFO [stderr]    Compiling syn v0.15.21
Nov 18 17:24:28.319 INFO [stderr]    Compiling comacro v0.0.1 (/source)
Nov 18 17:24:31.699 INFO [stderr] warning: unnecessary parentheses around pattern
Nov 18 17:24:31.699 INFO [stderr]   --> src/trace.rs:84:21
Nov 18 17:24:31.699 INFO [stderr]    |
Nov 18 17:24:31.699 INFO [stderr] 84 |                 let ((&x, rest)) = rest.split_first().unwrap();
Nov 18 17:24:31.699 INFO [stderr]    |                     ^^^^^^^^^^^^ help: remove these parentheses
Nov 18 17:24:31.699 INFO [stderr]    |
Nov 18 17:24:31.699 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Nov 18 17:24:31.699 INFO [stderr] 
Nov 18 17:24:32.087 INFO [stderr] warning: unused variable: `x`
Nov 18 17:24:32.087 INFO [stderr]    --> src/repr.rs:270:29
Nov 18 17:24:32.087 INFO [stderr]     |
Nov 18 17:24:32.087 INFO [stderr] 270 |     fn push_byte(&mut self, x: u8) {}
Nov 18 17:24:32.087 INFO [stderr]     |                             ^ help: consider using `_x` instead
Nov 18 17:24:32.087 INFO [stderr]     |
Nov 18 17:24:32.087 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 18 17:24:32.087 INFO [stderr] 
Nov 18 17:24:32.087 INFO [stderr] warning: unused variable: `x`
Nov 18 17:24:32.087 INFO [stderr]    --> src/repr.rs:271:32
Nov 18 17:24:32.087 INFO [stderr]     |
Nov 18 17:24:32.087 INFO [stderr] 271 |     fn extend_bytes(&mut self, x: &[u8]) {}
Nov 18 17:24:32.087 INFO [stderr]     |                                ^ help: consider using `_x` instead
Nov 18 17:24:32.087 INFO [stderr] 
Nov 18 17:24:32.279 INFO [stderr] warning: variant is never constructed: `Cont`
Nov 18 17:24:32.279 INFO [stderr]   --> src/tokens.rs:18:5
Nov 18 17:24:32.279 INFO [stderr]    |
Nov 18 17:24:32.279 INFO [stderr] 18 |     Cont,
Nov 18 17:24:32.279 INFO [stderr]    |     ^^^^
Nov 18 17:24:32.279 INFO [stderr]    |
Nov 18 17:24:32.279 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 18 17:24:32.279 INFO [stderr] 
Nov 18 17:24:32.279 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.279 INFO [stderr]   --> src/repr.rs:41:9
Nov 18 17:24:32.279 INFO [stderr]    |
Nov 18 17:24:32.279 INFO [stderr] 41 |         write!(self.buf, "${}", x);
Nov 18 17:24:32.279 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.279 INFO [stderr]    |
Nov 18 17:24:32.279 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 18 17:24:32.279 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.279 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)
Nov 18 17:24:32.279 INFO [stderr] 
Nov 18 17:24:32.279 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.279 INFO [stderr]   --> src/repr.rs:47:9
Nov 18 17:24:32.279 INFO [stderr]    |
Nov 18 17:24:32.279 INFO [stderr] 47 |         write!(self.buf, "{}", s);
Nov 18 17:24:32.279 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.279 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.280 INFO [stderr]   --> src/repr.rs:53:9
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr] 53 |         write!(self.buf, "{}", s);
Nov 18 17:24:32.280 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.280 INFO [stderr]   --> src/repr.rs:59:9
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr] 59 |         write!(self.buf, "{}{{", s);
Nov 18 17:24:32.280 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.280 INFO [stderr]   --> src/repr.rs:65:9
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr] 65 |         write!(self.buf, "}}");
Nov 18 17:24:32.280 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.280 INFO [stderr]   --> src/repr.rs:71:13
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr] 71 |             write!(self.buf, "\n");
Nov 18 17:24:32.280 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.280 INFO [stderr]   --> src/repr.rs:90:9
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr] 90 |         write!(buf, "[");
Nov 18 17:24:32.280 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.280 INFO [stderr]    |
Nov 18 17:24:32.280 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.280 INFO [stderr]    --> src/repr.rs:113:13
Nov 18 17:24:32.280 INFO [stderr]     |
Nov 18 17:24:32.280 INFO [stderr] 113 |             write!(self.buf, "]");
Nov 18 17:24:32.280 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.280 INFO [stderr]     |
Nov 18 17:24:32.280 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.280 INFO [stderr]    --> src/repr.rs:120:9
Nov 18 17:24:32.280 INFO [stderr]     |
Nov 18 17:24:32.280 INFO [stderr] 120 |         write!(self.buf, "\"${}\"", x);
Nov 18 17:24:32.280 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.280 INFO [stderr]     |
Nov 18 17:24:32.280 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.280 INFO [stderr]    --> src/repr.rs:126:9
Nov 18 17:24:32.280 INFO [stderr]     |
Nov 18 17:24:32.280 INFO [stderr] 126 |         write!(self.buf, "{}", s);
Nov 18 17:24:32.280 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.280 INFO [stderr]     |
Nov 18 17:24:32.280 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.280 INFO [stderr]    --> src/repr.rs:132:9
Nov 18 17:24:32.280 INFO [stderr]     |
Nov 18 17:24:32.280 INFO [stderr] 132 |         write!(self.buf, "\"{}\"", s);
Nov 18 17:24:32.280 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.280 INFO [stderr]     |
Nov 18 17:24:32.280 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.280 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)
Nov 18 17:24:32.280 INFO [stderr] 
Nov 18 17:24:32.281 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.281 INFO [stderr]    --> src/repr.rs:138:9
Nov 18 17:24:32.281 INFO [stderr]     |
Nov 18 17:24:32.281 INFO [stderr] 138 |         write!(self.buf, "[\"{}\"", s);
Nov 18 17:24:32.281 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.281 INFO [stderr]     |
Nov 18 17:24:32.281 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.281 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)
Nov 18 17:24:32.281 INFO [stderr] 
Nov 18 17:24:32.281 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:32.281 INFO [stderr]    --> src/repr.rs:143:9
Nov 18 17:24:32.281 INFO [stderr]     |
Nov 18 17:24:32.281 INFO [stderr] 143 |         write!(self.buf, "]");
Nov 18 17:24:32.281 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:32.281 INFO [stderr]     |
Nov 18 17:24:32.281 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:32.281 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)
Nov 18 17:24:32.281 INFO [stderr] 
Nov 18 17:24:37.471 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.95s
Nov 18 17:24:37.475 INFO [stderr] su: No module specific data is present
Nov 18 17:24:38.145 INFO running `"docker" "inspect" "83a685d06ea2f5708e469e425dd58e7074950b7bc52ba46745c7ff86c1089753"`
Nov 18 17:24:38.477 INFO running `"docker" "rm" "-f" "83a685d06ea2f5708e469e425dd58e7074950b7bc52ba46745c7ff86c1089753"`
Nov 18 17:24:38.799 INFO [stdout] 83a685d06ea2f5708e469e425dd58e7074950b7bc52ba46745c7ff86c1089753
Nov 18 17:24:38.809 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen --no-run" "-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"`
Nov 18 17:24:39.414 INFO [stdout] dfc33bf1edac47ed1ea6849f3d825f5775f57380d7f6bb388f6a9b302188b771
Nov 18 17:24:39.419 INFO running `"docker" "start" "-a" "dfc33bf1edac47ed1ea6849f3d825f5775f57380d7f6bb388f6a9b302188b771"`
Nov 18 17:24:40.515 INFO [stderr] usermod: no changes
Nov 18 17:24:40.659 INFO [stderr]    Compiling env_logger v0.5.13
Nov 18 17:24:43.417 INFO [stderr]    Compiling comacro v0.0.1 (/source)
Nov 18 17:24:48.883 INFO [stderr] warning: unnecessary parentheses around pattern
Nov 18 17:24:48.883 INFO [stderr]   --> src/trace.rs:84:21
Nov 18 17:24:48.883 INFO [stderr]    |
Nov 18 17:24:48.883 INFO [stderr] 84 |                 let ((&x, rest)) = rest.split_first().unwrap();
Nov 18 17:24:48.883 INFO [stderr]    |                     ^^^^^^^^^^^^ help: remove these parentheses
Nov 18 17:24:48.883 INFO [stderr]    |
Nov 18 17:24:48.883 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Nov 18 17:24:48.883 INFO [stderr] 
Nov 18 17:24:49.411 INFO [stderr] warning: unused variable: `x`
Nov 18 17:24:49.411 INFO [stderr]    --> src/repr.rs:270:29
Nov 18 17:24:49.411 INFO [stderr]     |
Nov 18 17:24:49.411 INFO [stderr] 270 |     fn push_byte(&mut self, x: u8) {}
Nov 18 17:24:49.411 INFO [stderr]     |                             ^ help: consider using `_x` instead
Nov 18 17:24:49.411 INFO [stderr]     |
Nov 18 17:24:49.411 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 18 17:24:49.411 INFO [stderr] 
Nov 18 17:24:49.411 INFO [stderr] warning: unused variable: `x`
Nov 18 17:24:49.411 INFO [stderr]    --> src/repr.rs:271:32
Nov 18 17:24:49.411 INFO [stderr]     |
Nov 18 17:24:49.411 INFO [stderr] 271 |     fn extend_bytes(&mut self, x: &[u8]) {}
Nov 18 17:24:49.411 INFO [stderr]     |                                ^ help: consider using `_x` instead
Nov 18 17:24:49.411 INFO [stderr] 
Nov 18 17:24:49.632 INFO [stderr] warning: variant is never constructed: `Cont`
Nov 18 17:24:49.632 INFO [stderr]   --> src/tokens.rs:18:5
Nov 18 17:24:49.632 INFO [stderr]    |
Nov 18 17:24:49.632 INFO [stderr] 18 |     Cont,
Nov 18 17:24:49.632 INFO [stderr]    |     ^^^^
Nov 18 17:24:49.632 INFO [stderr]    |
Nov 18 17:24:49.632 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 18 17:24:49.632 INFO [stderr] 
Nov 18 17:24:49.634 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.634 INFO [stderr]   --> src/repr.rs:41:9
Nov 18 17:24:49.634 INFO [stderr]    |
Nov 18 17:24:49.634 INFO [stderr] 41 |         write!(self.buf, "${}", x);
Nov 18 17:24:49.634 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.634 INFO [stderr]    |
Nov 18 17:24:49.634 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 18 17:24:49.635 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.635 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)
Nov 18 17:24:49.635 INFO [stderr] 
Nov 18 17:24:49.635 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.635 INFO [stderr]   --> src/repr.rs:47:9
Nov 18 17:24:49.635 INFO [stderr]    |
Nov 18 17:24:49.635 INFO [stderr] 47 |         write!(self.buf, "{}", s);
Nov 18 17:24:49.635 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.635 INFO [stderr]    |
Nov 18 17:24:49.635 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.635 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)
Nov 18 17:24:49.635 INFO [stderr] 
Nov 18 17:24:49.638 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.638 INFO [stderr]   --> src/repr.rs:53:9
Nov 18 17:24:49.638 INFO [stderr]    |
Nov 18 17:24:49.638 INFO [stderr] 53 |         write!(self.buf, "{}", s);
Nov 18 17:24:49.638 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.638 INFO [stderr]    |
Nov 18 17:24:49.638 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.638 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)
Nov 18 17:24:49.638 INFO [stderr] 
Nov 18 17:24:49.638 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.638 INFO [stderr]   --> src/repr.rs:59:9
Nov 18 17:24:49.638 INFO [stderr]    |
Nov 18 17:24:49.638 INFO [stderr] 59 |         write!(self.buf, "{}{{", s);
Nov 18 17:24:49.638 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.638 INFO [stderr]    |
Nov 18 17:24:49.638 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.638 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)
Nov 18 17:24:49.638 INFO [stderr] 
Nov 18 17:24:49.638 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.638 INFO [stderr]   --> src/repr.rs:65:9
Nov 18 17:24:49.638 INFO [stderr]    |
Nov 18 17:24:49.638 INFO [stderr] 65 |         write!(self.buf, "}}");
Nov 18 17:24:49.638 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.638 INFO [stderr]    |
Nov 18 17:24:49.638 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.638 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)
Nov 18 17:24:49.638 INFO [stderr] 
Nov 18 17:24:49.643 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.643 INFO [stderr]   --> src/repr.rs:71:13
Nov 18 17:24:49.643 INFO [stderr]    |
Nov 18 17:24:49.643 INFO [stderr] 71 |             write!(self.buf, "\n");
Nov 18 17:24:49.643 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.643 INFO [stderr]    |
Nov 18 17:24:49.643 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.643 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)
Nov 18 17:24:49.643 INFO [stderr] 
Nov 18 17:24:49.647 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.647 INFO [stderr]   --> src/repr.rs:90:9
Nov 18 17:24:49.647 INFO [stderr]    |
Nov 18 17:24:49.647 INFO [stderr] 90 |         write!(buf, "[");
Nov 18 17:24:49.647 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.647 INFO [stderr]    |
Nov 18 17:24:49.647 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.647 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)
Nov 18 17:24:49.647 INFO [stderr] 
Nov 18 17:24:49.647 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.647 INFO [stderr]    --> src/repr.rs:113:13
Nov 18 17:24:49.647 INFO [stderr]     |
Nov 18 17:24:49.647 INFO [stderr] 113 |             write!(self.buf, "]");
Nov 18 17:24:49.647 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.647 INFO [stderr]     |
Nov 18 17:24:49.647 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.647 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)
Nov 18 17:24:49.647 INFO [stderr] 
Nov 18 17:24:49.647 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.647 INFO [stderr]    --> src/repr.rs:120:9
Nov 18 17:24:49.647 INFO [stderr]     |
Nov 18 17:24:49.647 INFO [stderr] 120 |         write!(self.buf, "\"${}\"", x);
Nov 18 17:24:49.647 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.647 INFO [stderr]     |
Nov 18 17:24:49.647 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.647 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)
Nov 18 17:24:49.647 INFO [stderr] 
Nov 18 17:24:49.648 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.648 INFO [stderr]    --> src/repr.rs:126:9
Nov 18 17:24:49.648 INFO [stderr]     |
Nov 18 17:24:49.648 INFO [stderr] 126 |         write!(self.buf, "{}", s);
Nov 18 17:24:49.648 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.648 INFO [stderr]     |
Nov 18 17:24:49.648 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.648 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)
Nov 18 17:24:49.648 INFO [stderr] 
Nov 18 17:24:49.648 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.648 INFO [stderr]    --> src/repr.rs:132:9
Nov 18 17:24:49.648 INFO [stderr]     |
Nov 18 17:24:49.648 INFO [stderr] 132 |         write!(self.buf, "\"{}\"", s);
Nov 18 17:24:49.648 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.648 INFO [stderr]     |
Nov 18 17:24:49.648 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.648 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)
Nov 18 17:24:49.648 INFO [stderr] 
Nov 18 17:24:49.648 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.648 INFO [stderr]    --> src/repr.rs:138:9
Nov 18 17:24:49.648 INFO [stderr]     |
Nov 18 17:24:49.648 INFO [stderr] 138 |         write!(self.buf, "[\"{}\"", s);
Nov 18 17:24:49.648 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.648 INFO [stderr]     |
Nov 18 17:24:49.648 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.648 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)
Nov 18 17:24:49.648 INFO [stderr] 
Nov 18 17:24:49.652 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 18 17:24:49.652 INFO [stderr]    --> src/repr.rs:143:9
Nov 18 17:24:49.652 INFO [stderr]     |
Nov 18 17:24:49.652 INFO [stderr] 143 |         write!(self.buf, "]");
Nov 18 17:24:49.652 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^
Nov 18 17:24:49.652 INFO [stderr]     |
Nov 18 17:24:49.652 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 18 17:24:49.652 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)
Nov 18 17:24:49.652 INFO [stderr] 
Nov 18 17:24:52.991 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.42s
Nov 18 17:24:52.992 INFO [stderr] su: No module specific data is present
Nov 18 17:24:53.571 INFO running `"docker" "inspect" "dfc33bf1edac47ed1ea6849f3d825f5775f57380d7f6bb388f6a9b302188b771"`
Nov 18 17:24:53.803 INFO running `"docker" "rm" "-f" "dfc33bf1edac47ed1ea6849f3d825f5775f57380d7f6bb388f6a9b302188b771"`
Nov 18 17:24:54.143 INFO [stdout] dfc33bf1edac47ed1ea6849f3d825f5775f57380d7f6bb388f6a9b302188b771
Nov 18 17:24:54.148 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-3/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen" "-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"`
Nov 18 17:24:54.761 INFO [stdout] 9f216c53ba4f5ac22037870771ff67a29aecb73137c45ae5d24b725b2150df47
Nov 18 17:24:54.769 INFO running `"docker" "start" "-a" "9f216c53ba4f5ac22037870771ff67a29aecb73137c45ae5d24b725b2150df47"`
Nov 18 17:24:56.166 INFO [stderr] usermod: no changes
Nov 18 17:24:56.323 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
Nov 18 17:24:56.323 INFO [stderr]      Running /target/debug/deps/comacro-a95db660adc56bbd
Nov 18 17:24:56.323 INFO [stderr]    Doc-tests comacro
Nov 18 17:24:56.323 INFO [stdout] 
Nov 18 17:24:56.323 INFO [stdout] running 0 tests
Nov 18 17:24:56.323 INFO [stdout] 
Nov 18 17:24:56.323 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 18 17:24:56.323 INFO [stdout] 
Nov 18 17:25:02.755 INFO [stdout] 
Nov 18 17:25:02.755 INFO [stdout] running 0 tests
Nov 18 17:25:02.755 INFO [stdout] 
Nov 18 17:25:02.755 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 18 17:25:02.755 INFO [stdout] 
Nov 18 17:25:02.765 INFO [stderr] su: No module specific data is present
Nov 18 17:25:03.803 INFO running `"docker" "inspect" "9f216c53ba4f5ac22037870771ff67a29aecb73137c45ae5d24b725b2150df47"`
Nov 18 17:25:04.120 INFO running `"docker" "rm" "-f" "9f216c53ba4f5ac22037870771ff67a29aecb73137c45ae5d24b725b2150df47"`
Nov 18 17:25:04.418 INFO [stdout] 9f216c53ba4f5ac22037870771ff67a29aecb73137c45ae5d24b725b2150df47