Dec 19 11:17:48.602 INFO checking padenot/trace-filtering against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 11:17:48.602 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 11:17:48.975 INFO [stdout] ab74b9c850ed56cd18cf4abc66e8bc2569805b6eaaf86fc363832e5cd812a3c6
Dec 19 11:17:48.979 INFO running `"docker" "start" "-a" "ab74b9c850ed56cd18cf4abc66e8bc2569805b6eaaf86fc363832e5cd812a3c6"`
Dec 19 11:17:50.388 INFO [stderr]    Compiling syn v0.15.8
Dec 19 11:17:58.472 INFO [stderr]    Compiling serde_derive v1.0.79
Dec 19 11:18:10.248 INFO [stderr]     Checking trace-filtering v0.1.0 (/opt/crater/workdir)
Dec 19 11:18:10.611 INFO [stderr] warning: unused import: `std::io::Read`
Dec 19 11:18:10.611 INFO [stderr]  --> src/main.rs:7:5
Dec 19 11:18:10.611 INFO [stderr]   |
Dec 19 11:18:10.611 INFO [stderr] 7 | use std::io::Read;
Dec 19 11:18:10.611 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 11:18:10.611 INFO [stderr]   |
Dec 19 11:18:10.611 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 11:18:10.611 INFO [stderr] 
Dec 19 11:18:10.731 INFO [stderr] warning: unused import: `std::io::Read`
Dec 19 11:18:10.731 INFO [stderr]  --> src/main.rs:7:5
Dec 19 11:18:10.731 INFO [stderr]   |
Dec 19 11:18:10.731 INFO [stderr] 7 | use std::io::Read;
Dec 19 11:18:10.731 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 19 11:18:10.731 INFO [stderr]   |
Dec 19 11:18:10.731 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 11:18:10.731 INFO [stderr] 
Dec 19 11:18:10.820 INFO [stderr] warning: unused variable: `duration`
Dec 19 11:18:10.820 INFO [stderr]   --> src/main.rs:33:13
Dec 19 11:18:10.820 INFO [stderr]    |
Dec 19 11:18:10.820 INFO [stderr] 33 |     let mut duration = 0;
Dec 19 11:18:10.820 INFO [stderr]    |             ^^^^^^^^ help: consider using `_duration` instead
Dec 19 11:18:10.820 INFO [stderr]    |
Dec 19 11:18:10.820 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 11:18:10.820 INFO [stderr] 
Dec 19 11:18:10.905 INFO [stderr] warning: unused variable: `duration`
Dec 19 11:18:10.905 INFO [stderr]   --> src/main.rs:33:13
Dec 19 11:18:10.905 INFO [stderr]    |
Dec 19 11:18:10.905 INFO [stderr] 33 |     let mut duration = 0;
Dec 19 11:18:10.905 INFO [stderr]    |             ^^^^^^^^ help: consider using `_duration` instead
Dec 19 11:18:10.905 INFO [stderr]    |
Dec 19 11:18:10.905 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 11:18:10.905 INFO [stderr] 
Dec 19 11:18:10.916 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:18:10.916 INFO [stderr]   --> src/main.rs:27:9
Dec 19 11:18:10.916 INFO [stderr]    |
Dec 19 11:18:10.916 INFO [stderr] 27 |     let mut f = File::open("trace.log.child-1").expect("file not found");
Dec 19 11:18:10.916 INFO [stderr]    |         ----^
Dec 19 11:18:10.916 INFO [stderr]    |         |
Dec 19 11:18:10.916 INFO [stderr]    |         help: remove this `mut`
Dec 19 11:18:10.916 INFO [stderr]    |
Dec 19 11:18:10.916 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 11:18:10.916 INFO [stderr] 
Dec 19 11:18:10.916 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:18:10.916 INFO [stderr]   --> src/main.rs:33:9
Dec 19 11:18:10.916 INFO [stderr]    |
Dec 19 11:18:10.916 INFO [stderr] 33 |     let mut duration = 0;
Dec 19 11:18:10.916 INFO [stderr]    |         ----^^^^^^^^
Dec 19 11:18:10.916 INFO [stderr]    |         |
Dec 19 11:18:10.916 INFO [stderr]    |         help: remove this `mut`
Dec 19 11:18:10.916 INFO [stderr] 
Dec 19 11:18:11.056 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:18:11.056 INFO [stderr]   --> src/main.rs:27:9
Dec 19 11:18:11.056 INFO [stderr]    |
Dec 19 11:18:11.056 INFO [stderr] 27 |     let mut f = File::open("trace.log.child-1").expect("file not found");
Dec 19 11:18:11.056 INFO [stderr]    |         ----^
Dec 19 11:18:11.056 INFO [stderr]    |         |
Dec 19 11:18:11.056 INFO [stderr]    |         help: remove this `mut`
Dec 19 11:18:11.056 INFO [stderr]    |
Dec 19 11:18:11.056 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 11:18:11.056 INFO [stderr] 
Dec 19 11:18:11.056 INFO [stderr] warning: variable does not need to be mutable
Dec 19 11:18:11.056 INFO [stderr]   --> src/main.rs:33:9
Dec 19 11:18:11.056 INFO [stderr]    |
Dec 19 11:18:11.056 INFO [stderr] 33 |     let mut duration = 0;
Dec 19 11:18:11.056 INFO [stderr]    |         ----^^^^^^^^
Dec 19 11:18:11.056 INFO [stderr]    |         |
Dec 19 11:18:11.056 INFO [stderr]    |         help: remove this `mut`
Dec 19 11:18:11.056 INFO [stderr] 
Dec 19 11:18:11.113 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.81s
Dec 19 11:18:11.813 INFO running `"docker" "inspect" "ab74b9c850ed56cd18cf4abc66e8bc2569805b6eaaf86fc363832e5cd812a3c6"`
Dec 19 11:18:12.130 INFO running `"docker" "rm" "-f" "ab74b9c850ed56cd18cf4abc66e8bc2569805b6eaaf86fc363832e5cd812a3c6"`
Dec 19 11:18:12.400 INFO [stdout] ab74b9c850ed56cd18cf4abc66e8bc2569805b6eaaf86fc363832e5cd812a3c6