Dec 19 19:13:19.365 INFO checking cedricleroy/rust-tuto against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 19:13:19.365 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/cedricleroy/rust-tuto:/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 19:13:19.891 INFO [stdout] 9c217654b3f30c0e4e56b274e9444f335768ba60100997a34bfdcc796bc51981
Dec 19 19:13:19.900 INFO running `"docker" "start" "-a" "9c217654b3f30c0e4e56b274e9444f335768ba60100997a34bfdcc796bc51981"`
Dec 19 19:13:21.679 INFO [stderr]     Checking rust-tuto v0.1.0 (/opt/crater/workdir)
Dec 19 19:13:22.412 INFO [stderr] warning: value assigned to `y` is never read
Dec 19 19:13:22.412 INFO [stderr]   --> src/main.rs:13:13
Dec 19 19:13:22.412 INFO [stderr]    |
Dec 19 19:13:22.412 INFO [stderr] 13 |     let mut y = 21;
Dec 19 19:13:22.412 INFO [stderr]    |             ^
Dec 19 19:13:22.412 INFO [stderr]    |
Dec 19 19:13:22.412 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 19:13:22.412 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:13:22.412 INFO [stderr] 
Dec 19 19:13:22.432 INFO [stderr] warning: value assigned to `y` is never read
Dec 19 19:13:22.432 INFO [stderr]   --> src/main.rs:13:13
Dec 19 19:13:22.432 INFO [stderr]    |
Dec 19 19:13:22.432 INFO [stderr] 13 |     let mut y = 21;
Dec 19 19:13:22.432 INFO [stderr]    |             ^
Dec 19 19:13:22.432 INFO [stderr]    |
Dec 19 19:13:22.432 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 19 19:13:22.432 INFO [stderr]    = help: maybe it is overwritten before being read?
Dec 19 19:13:22.432 INFO [stderr] 
Dec 19 19:13:22.456 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:13:22.456 INFO [stderr]   --> src/json.rs:12:5
Dec 19 19:13:22.456 INFO [stderr]    |
Dec 19 19:13:22.456 INFO [stderr] 12 |     file.read_to_string(&mut content);
Dec 19 19:13:22.456 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:13:22.456 INFO [stderr]    |
Dec 19 19:13:22.456 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 19:13:22.456 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:13:22.456 INFO [stderr] 
Dec 19 19:13:22.460 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 19:13:22.460 INFO [stderr]   --> src/json.rs:12:5
Dec 19 19:13:22.460 INFO [stderr]    |
Dec 19 19:13:22.460 INFO [stderr] 12 |     file.read_to_string(&mut content);
Dec 19 19:13:22.460 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 19:13:22.460 INFO [stderr]    |
Dec 19 19:13:22.460 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 19:13:22.460 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 19:13:22.460 INFO [stderr] 
Dec 19 19:13:22.511 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
Dec 19 19:13:23.154 INFO running `"docker" "inspect" "9c217654b3f30c0e4e56b274e9444f335768ba60100997a34bfdcc796bc51981"`
Dec 19 19:13:23.448 INFO running `"docker" "rm" "-f" "9c217654b3f30c0e4e56b274e9444f335768ba60100997a34bfdcc796bc51981"`
Dec 19 19:13:23.824 INFO [stdout] 9c217654b3f30c0e4e56b274e9444f335768ba60100997a34bfdcc796bc51981