[INFO] fetching crate alaybey 0.0.1...
[INFO] checking alaybey-0.0.1 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate alaybey 0.0.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate alaybey 0.0.1 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alaybey 0.0.1
[INFO] finished tweaking crates.io crate alaybey 0.0.1
[INFO] tweaked toml for crates.io crate alaybey 0.0.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate alaybey 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 288dac4c524a526d9727824eb041bd6880c2d121dff81affd1b5fc5de81b7703
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "288dac4c524a526d9727824eb041bd6880c2d121dff81affd1b5fc5de81b7703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "288dac4c524a526d9727824eb041bd6880c2d121dff81affd1b5fc5de81b7703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "288dac4c524a526d9727824eb041bd6880c2d121dff81affd1b5fc5de81b7703", kill_on_drop: false }`
[INFO] [stdout] 288dac4c524a526d9727824eb041bd6880c2d121dff81affd1b5fc5de81b7703
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a47f5d73ba25c2643707cec574edc5690f7e203abc509e75eb58a3dd5085f397
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a47f5d73ba25c2643707cec574edc5690f7e203abc509e75eb58a3dd5085f397", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking alaybey v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/lib/compiler/mod.rs:18:13
[INFO] [stdout]     |
[INFO] [stdout] 18  | /             &lexers[1..lexers.len() - 1]
[INFO] [stdout] 19  | |                 .iter()
[INFO] [stdout] 20  | |                 .filter(|val| {
[INFO] [stdout] 21  | |                     let semi_colon = &val
[INFO] [stdout] ...   |
[INFO] [stdout] 135 | |                 })
[INFO] [stdout] 136 | |                 .count();
[INFO] [stdout]     | |________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "a47f5d73ba25c2643707cec574edc5690f7e203abc509e75eb58a3dd5085f397", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a47f5d73ba25c2643707cec574edc5690f7e203abc509e75eb58a3dd5085f397", kill_on_drop: false }`
[INFO] [stdout] a47f5d73ba25c2643707cec574edc5690f7e203abc509e75eb58a3dd5085f397