[INFO] cloning repository https://github.com/smpte11/islay
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/smpte11/islay" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmpte11%2Fislay", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmpte11%2Fislay'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8cae8a51ba1a345754bc6f1a80c7e5b59d42a87
[INFO] checking smpte11/islay against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmpte11%2Fislay" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/smpte11/islay on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/smpte11/islay
[INFO] finished tweaking git repo https://github.com/smpte11/islay
[INFO] tweaked toml for git repo https://github.com/smpte11/islay written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/smpte11/islay already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d09d186b1f608a4c4219543ab29f9efd6ec5b30157c117761ed410147296168b
[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" "d09d186b1f608a4c4219543ab29f9efd6ec5b30157c117761ed410147296168b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d09d186b1f608a4c4219543ab29f9efd6ec5b30157c117761ed410147296168b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d09d186b1f608a4c4219543ab29f9efd6ec5b30157c117761ed410147296168b", kill_on_drop: false }`
[INFO] [stdout] d09d186b1f608a4c4219543ab29f9efd6ec5b30157c117761ed410147296168b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee715580cdc8fca7910d0196826c01380b28a2f69824c8b28cd6e01dc84da726
[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" "ee715580cdc8fca7910d0196826c01380b28a2f69824c8b28cd6e01dc84da726", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking islay v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `lex`
[INFO] [stdout]  --> src/lexer.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn lex(source: &str) -> Vec<String> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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 0.91s
[INFO] running `Command { std: "docker" "inspect" "ee715580cdc8fca7910d0196826c01380b28a2f69824c8b28cd6e01dc84da726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee715580cdc8fca7910d0196826c01380b28a2f69824c8b28cd6e01dc84da726", kill_on_drop: false }`
[INFO] [stdout] ee715580cdc8fca7910d0196826c01380b28a2f69824c8b28cd6e01dc84da726