[INFO] fetching crate alaybey 0.0.1...
[INFO] testing alaybey-0.0.1 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate alaybey 0.0.1 into /workspace/builds/worker-78/source
[INFO] validating manifest of crates.io crate alaybey 0.0.1 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-78/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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 838e295c453fe2ae33a823bf93a27cd36ea6c6c9a5f9a2284445a8a922f7b053
[INFO] running `Command { std: "docker" "start" "-a" "838e295c453fe2ae33a823bf93a27cd36ea6c6c9a5f9a2284445a8a922f7b053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "838e295c453fe2ae33a823bf93a27cd36ea6c6c9a5f9a2284445a8a922f7b053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "838e295c453fe2ae33a823bf93a27cd36ea6c6c9a5f9a2284445a8a922f7b053", kill_on_drop: false }`
[INFO] [stdout] 838e295c453fe2ae33a823bf93a27cd36ea6c6c9a5f9a2284445a8a922f7b053
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27c4332e817bec5bb2f98dd3f9962d4d11bbfc4d5b6dadc2e0642cdacb3d08ab
[INFO] running `Command { std: "docker" "start" "-a" "27c4332e817bec5bb2f98dd3f9962d4d11bbfc4d5b6dadc2e0642cdacb3d08ab", 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 2.00s
[INFO] running `Command { std: "docker" "inspect" "27c4332e817bec5bb2f98dd3f9962d4d11bbfc4d5b6dadc2e0642cdacb3d08ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27c4332e817bec5bb2f98dd3f9962d4d11bbfc4d5b6dadc2e0642cdacb3d08ab", kill_on_drop: false }`
[INFO] [stdout] 27c4332e817bec5bb2f98dd3f9962d4d11bbfc4d5b6dadc2e0642cdacb3d08ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6173b885e0dea0bc3ca2d9931e1d8894e29510d32f185a247193d3c98cdf5a4b
[INFO] running `Command { std: "docker" "start" "-a" "6173b885e0dea0bc3ca2d9931e1d8894e29510d32f185a247193d3c98cdf5a4b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "6173b885e0dea0bc3ca2d9931e1d8894e29510d32f185a247193d3c98cdf5a4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6173b885e0dea0bc3ca2d9931e1d8894e29510d32f185a247193d3c98cdf5a4b", kill_on_drop: false }`
[INFO] [stdout] 6173b885e0dea0bc3ca2d9931e1d8894e29510d32f185a247193d3c98cdf5a4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 79b946d447b8dd3846457e3f2907abb68199ee211f61b8f936beef3127dba050
[INFO] running `Command { std: "docker" "start" "-a" "79b946d447b8dd3846457e3f2907abb68199ee211f61b8f936beef3127dba050", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] running `Command { std: "docker" "inspect" "79b946d447b8dd3846457e3f2907abb68199ee211f61b8f936beef3127dba050", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79b946d447b8dd3846457e3f2907abb68199ee211f61b8f936beef3127dba050", kill_on_drop: false }`
[INFO] [stdout] 79b946d447b8dd3846457e3f2907abb68199ee211f61b8f936beef3127dba050