Dec 17 18:11:33.663 INFO checking padenot/trace-filtering against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 18:11:33.664 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/padenot/trace-filtering:/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 18:11:33.958 INFO [stdout] 8546897ab0bc573d4d3eadf14b22a1d027845d7755e85dbf561587840fb38a0d
Dec 17 18:11:33.964 INFO running `"docker" "start" "-a" "8546897ab0bc573d4d3eadf14b22a1d027845d7755e85dbf561587840fb38a0d"`
Dec 17 18:11:35.112 INFO [stderr]    Compiling syn v0.15.8
Dec 17 18:11:44.040 INFO [stderr]    Compiling serde_derive v1.0.79
Dec 17 18:11:54.762 INFO [stderr]     Checking trace-filtering v0.1.0 (/opt/crater/workdir)
Dec 17 18:11:55.124 INFO [stderr] warning: unused import: `std::io::Read`
Dec 17 18:11:55.124 INFO [stderr]  --> src/main.rs:7:5
Dec 17 18:11:55.124 INFO [stderr]   |
Dec 17 18:11:55.124 INFO [stderr] 7 | use std::io::Read;
Dec 17 18:11:55.125 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 17 18:11:55.125 INFO [stderr]   |
Dec 17 18:11:55.125 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 18:11:55.125 INFO [stderr] 
Dec 17 18:11:55.156 INFO [stderr] warning: unused import: `std::io::Read`
Dec 17 18:11:55.156 INFO [stderr]  --> src/main.rs:7:5
Dec 17 18:11:55.156 INFO [stderr]   |
Dec 17 18:11:55.156 INFO [stderr] 7 | use std::io::Read;
Dec 17 18:11:55.157 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 17 18:11:55.157 INFO [stderr]   |
Dec 17 18:11:55.157 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 18:11:55.157 INFO [stderr] 
Dec 17 18:11:55.304 INFO [stderr] warning: unused variable: `duration`
Dec 17 18:11:55.304 INFO [stderr]   --> src/main.rs:33:13
Dec 17 18:11:55.304 INFO [stderr]    |
Dec 17 18:11:55.304 INFO [stderr] 33 |     let mut duration = 0;
Dec 17 18:11:55.304 INFO [stderr]    |             ^^^^^^^^ help: consider using `_duration` instead
Dec 17 18:11:55.304 INFO [stderr]    |
Dec 17 18:11:55.304 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 18:11:55.304 INFO [stderr] 
Dec 17 18:11:55.324 INFO [stderr] warning: unused variable: `duration`
Dec 17 18:11:55.324 INFO [stderr]   --> src/main.rs:33:13
Dec 17 18:11:55.324 INFO [stderr]    |
Dec 17 18:11:55.324 INFO [stderr] 33 |     let mut duration = 0;
Dec 17 18:11:55.324 INFO [stderr]    |             ^^^^^^^^ help: consider using `_duration` instead
Dec 17 18:11:55.324 INFO [stderr]    |
Dec 17 18:11:55.324 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 18:11:55.324 INFO [stderr] 
Dec 17 18:11:55.416 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:11:55.416 INFO [stderr]   --> src/main.rs:27:9
Dec 17 18:11:55.416 INFO [stderr]    |
Dec 17 18:11:55.416 INFO [stderr] 27 |     let mut f = File::open("trace.log.child-1").expect("file not found");
Dec 17 18:11:55.416 INFO [stderr]    |         ----^
Dec 17 18:11:55.416 INFO [stderr]    |         |
Dec 17 18:11:55.416 INFO [stderr]    |         help: remove this `mut`
Dec 17 18:11:55.416 INFO [stderr]    |
Dec 17 18:11:55.416 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 18:11:55.416 INFO [stderr] 
Dec 17 18:11:55.416 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:11:55.416 INFO [stderr]   --> src/main.rs:33:9
Dec 17 18:11:55.416 INFO [stderr]    |
Dec 17 18:11:55.416 INFO [stderr] 33 |     let mut duration = 0;
Dec 17 18:11:55.416 INFO [stderr]    |         ----^^^^^^^^
Dec 17 18:11:55.416 INFO [stderr]    |         |
Dec 17 18:11:55.416 INFO [stderr]    |         help: remove this `mut`
Dec 17 18:11:55.416 INFO [stderr] 
Dec 17 18:11:55.425 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:11:55.425 INFO [stderr]   --> src/main.rs:27:9
Dec 17 18:11:55.425 INFO [stderr]    |
Dec 17 18:11:55.425 INFO [stderr] 27 |     let mut f = File::open("trace.log.child-1").expect("file not found");
Dec 17 18:11:55.425 INFO [stderr]    |         ----^
Dec 17 18:11:55.425 INFO [stderr]    |         |
Dec 17 18:11:55.425 INFO [stderr]    |         help: remove this `mut`
Dec 17 18:11:55.425 INFO [stderr]    |
Dec 17 18:11:55.425 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 18:11:55.425 INFO [stderr] 
Dec 17 18:11:55.425 INFO [stderr] warning: variable does not need to be mutable
Dec 17 18:11:55.425 INFO [stderr]   --> src/main.rs:33:9
Dec 17 18:11:55.425 INFO [stderr]    |
Dec 17 18:11:55.425 INFO [stderr] 33 |     let mut duration = 0;
Dec 17 18:11:55.425 INFO [stderr]    |         ----^^^^^^^^
Dec 17 18:11:55.425 INFO [stderr]    |         |
Dec 17 18:11:55.425 INFO [stderr]    |         help: remove this `mut`
Dec 17 18:11:55.425 INFO [stderr] 
Dec 17 18:11:55.456 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.42s
Dec 17 18:11:56.764 INFO running `"docker" "inspect" "8546897ab0bc573d4d3eadf14b22a1d027845d7755e85dbf561587840fb38a0d"`
Dec 17 18:11:57.072 INFO running `"docker" "rm" "-f" "8546897ab0bc573d4d3eadf14b22a1d027845d7755e85dbf561587840fb38a0d"`
Dec 17 18:11:57.453 INFO [stdout] 8546897ab0bc573d4d3eadf14b22a1d027845d7755e85dbf561587840fb38a0d