[INFO] fetching crate alaybey 0.0.1...
[INFO] testing alaybey-0.0.1 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate alaybey 0.0.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate alaybey 0.0.1 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-1/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" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73495dd37be581940a2aeaf019a816e4cf30b407a9bab7315ab555b490dcb5ca
[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" "73495dd37be581940a2aeaf019a816e4cf30b407a9bab7315ab555b490dcb5ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73495dd37be581940a2aeaf019a816e4cf30b407a9bab7315ab555b490dcb5ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73495dd37be581940a2aeaf019a816e4cf30b407a9bab7315ab555b490dcb5ca", kill_on_drop: false }`
[INFO] [stdout] 73495dd37be581940a2aeaf019a816e4cf30b407a9bab7315ab555b490dcb5ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea31b2e7a84c2307a57142261768b013ee3055449149c531f850c63ac4d1f4fa
[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" "ea31b2e7a84c2307a57142261768b013ee3055449149c531f850c63ac4d1f4fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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]     | |________________________^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 18  |             let _ = &lexers[1..lexers.len() - 1]
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "ea31b2e7a84c2307a57142261768b013ee3055449149c531f850c63ac4d1f4fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea31b2e7a84c2307a57142261768b013ee3055449149c531f850c63ac4d1f4fa", kill_on_drop: false }`
[INFO] [stdout] ea31b2e7a84c2307a57142261768b013ee3055449149c531f850c63ac4d1f4fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47ff2af858d2eace89abcf72727858194b96d6e759bdfee4e82145f6fc8142f9
[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" "47ff2af858d2eace89abcf72727858194b96d6e759bdfee4e82145f6fc8142f9", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] running `Command { std: "docker" "inspect" "47ff2af858d2eace89abcf72727858194b96d6e759bdfee4e82145f6fc8142f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47ff2af858d2eace89abcf72727858194b96d6e759bdfee4e82145f6fc8142f9", kill_on_drop: false }`
[INFO] [stdout] 47ff2af858d2eace89abcf72727858194b96d6e759bdfee4e82145f6fc8142f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 75d6170fd03b600a8c782437a06a9fdd5b694527d21d0962841a2148c7c1cad1
[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" "75d6170fd03b600a8c782437a06a9fdd5b694527d21d0962841a2148c7c1cad1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] running `Command { std: "docker" "inspect" "75d6170fd03b600a8c782437a06a9fdd5b694527d21d0962841a2148c7c1cad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75d6170fd03b600a8c782437a06a9fdd5b694527d21d0962841a2148c7c1cad1", kill_on_drop: false }`
[INFO] [stdout] 75d6170fd03b600a8c782437a06a9fdd5b694527d21d0962841a2148c7c1cad1