[INFO] cloning repository https://github.com/andrewKyres/amphi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andrewKyres/amphi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FandrewKyres%2Famphi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FandrewKyres%2Famphi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d96e041cea5015c0596258ae91c5c022b6689b28
[INFO] checking andrewKyres/amphi against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FandrewKyres%2Famphi" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/andrewKyres/amphi 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/andrewKyres/amphi
[INFO] finished tweaking git repo https://github.com/andrewKyres/amphi
[INFO] tweaked toml for git repo https://github.com/andrewKyres/amphi written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/andrewKyres/amphi 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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 69edd4c3a14070a288c3face2e042b7bb83163591a44dbd27b2c662506a8d1eb
[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" "69edd4c3a14070a288c3face2e042b7bb83163591a44dbd27b2c662506a8d1eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69edd4c3a14070a288c3face2e042b7bb83163591a44dbd27b2c662506a8d1eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69edd4c3a14070a288c3face2e042b7bb83163591a44dbd27b2c662506a8d1eb", kill_on_drop: false }`
[INFO] [stdout] 69edd4c3a14070a288c3face2e042b7bb83163591a44dbd27b2c662506a8d1eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 08ef53b3d7327bdeb3df4a3211e2040dee41e0660ba822f29537ca283cc39640
[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" "08ef53b3d7327bdeb3df4a3211e2040dee41e0660ba822f29537ca283cc39640", kill_on_drop: false }`
[INFO] [stderr]     Checking amphi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `vm`
[INFO] [stdout]   --> src/repl/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     vm: VM,
[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] [stdout] warning: field is never read: `vm`
[INFO] [stdout]   --> src/repl/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     vm: VM,
[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 0.50s
[INFO] running `Command { std: "docker" "inspect" "08ef53b3d7327bdeb3df4a3211e2040dee41e0660ba822f29537ca283cc39640", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08ef53b3d7327bdeb3df4a3211e2040dee41e0660ba822f29537ca283cc39640", kill_on_drop: false }`
[INFO] [stdout] 08ef53b3d7327bdeb3df4a3211e2040dee41e0660ba822f29537ca283cc39640