[INFO] fetching crate trata 0.1.0...
[INFO] checking trata-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate trata 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate trata 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trata 0.1.0
[INFO] finished tweaking crates.io crate trata 0.1.0
[INFO] tweaked toml for crates.io crate trata 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate trata 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot_core v0.9.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6782346de15b6fabbeb2bc918f7b1598d278b59099ffd05296a18738ca821974
[INFO] running `Command { std: "docker" "start" "-a" "6782346de15b6fabbeb2bc918f7b1598d278b59099ffd05296a18738ca821974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6782346de15b6fabbeb2bc918f7b1598d278b59099ffd05296a18738ca821974", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6782346de15b6fabbeb2bc918f7b1598d278b59099ffd05296a18738ca821974", kill_on_drop: false }`
[INFO] [stdout] 6782346de15b6fabbeb2bc918f7b1598d278b59099ffd05296a18738ca821974
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abeedd24ce60ecd4951f8a694d1eb62381d8c58a2b3f7f72d4545e0ea152877c
[INFO] running `Command { std: "docker" "start" "-a" "abeedd24ce60ecd4951f8a694d1eb62381d8c58a2b3f7f72d4545e0ea152877c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking trata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stdout] warning: unused variable: `duration`
[INFO] [stdout]    --> src/lib.rs:234:33
[INFO] [stdout]     |
[INFO] [stdout] 234 |         fn empty_timer_callback(duration: Duration, mode: &TimerMode, timer_is_running: bool) {}
[INFO] [stdout]     |                                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mode`
[INFO] [stdout]    --> src/lib.rs:234:53
[INFO] [stdout]     |
[INFO] [stdout] 234 |         fn empty_timer_callback(duration: Duration, mode: &TimerMode, timer_is_running: bool) {}
[INFO] [stdout]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_mode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timer_is_running`
[INFO] [stdout]    --> src/lib.rs:234:71
[INFO] [stdout]     |
[INFO] [stdout] 234 |         fn empty_timer_callback(duration: Duration, mode: &TimerMode, timer_is_running: bool) {}
[INFO] [stdout]     |                                                                       ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timer_is_running`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `work_mode`
[INFO] [stdout]    --> src/lib.rs:235:27
[INFO] [stdout]     |
[INFO] [stdout] 235 |         fn empty_callback(work_mode: &TimerMode) {}
[INFO] [stdout]     |                           ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_work_mode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.24s
[INFO] running `Command { std: "docker" "inspect" "abeedd24ce60ecd4951f8a694d1eb62381d8c58a2b3f7f72d4545e0ea152877c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abeedd24ce60ecd4951f8a694d1eb62381d8c58a2b3f7f72d4545e0ea152877c", kill_on_drop: false }`
[INFO] [stdout] abeedd24ce60ecd4951f8a694d1eb62381d8c58a2b3f7f72d4545e0ea152877c