[INFO] cloning repository https://github.com/pickfire/ve
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pickfire/ve" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpickfire%2Fve", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpickfire%2Fve'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d349aa09095a56a6cf644ff784bad3d4297937c
[INFO] checking pickfire/ve against try#9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c for pr-79472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpickfire%2Fve" "/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/pickfire/ve on toolchain 9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pickfire/ve
[INFO] finished tweaking git repo https://github.com/pickfire/ve
[INFO] tweaked toml for git repo https://github.com/pickfire/ve written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/pickfire/ve already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f187f909a1c87495310910c26029bb5ba8d71f23f0baafc0132c30604d37dab9
[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" "f187f909a1c87495310910c26029bb5ba8d71f23f0baafc0132c30604d37dab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f187f909a1c87495310910c26029bb5ba8d71f23f0baafc0132c30604d37dab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f187f909a1c87495310910c26029bb5ba8d71f23f0baafc0132c30604d37dab9", kill_on_drop: false }`
[INFO] [stdout] f187f909a1c87495310910c26029bb5ba8d71f23f0baafc0132c30604d37dab9
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aa20b14cd980ca45b7d20c7b7bca4ce5f1f087a782603e6dc7f7803b9613720a
[INFO] running `Command { std: "docker" "start" "-a" "aa20b14cd980ca45b7d20c7b7bca4ce5f1f087a782603e6dc7f7803b9613720a", kill_on_drop: false }`
[INFO] [stderr]     Checking ve v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/raw_vec.rs:157:66
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn allocate_in(capacity: usize, len: usize, init: AllocInit, mut alloc: A) -> Self {
[INFO] [stdout]     |                                                                  ----^^^^^
[INFO] [stdout]     |                                                                  |
[INFO] [stdout]     |                                                                  help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/raw_vec.rs:157:66
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn allocate_in(capacity: usize, len: usize, init: AllocInit, mut alloc: A) -> Self {
[INFO] [stdout]     |                                                                  ----^^^^^
[INFO] [stdout]     |                                                                  |
[INFO] [stdout]     |                                                                  help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` 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 2.00s
[INFO] running `Command { std: "docker" "inspect" "aa20b14cd980ca45b7d20c7b7bca4ce5f1f087a782603e6dc7f7803b9613720a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa20b14cd980ca45b7d20c7b7bca4ce5f1f087a782603e6dc7f7803b9613720a", kill_on_drop: false }`
[INFO] [stdout] aa20b14cd980ca45b7d20c7b7bca4ce5f1f087a782603e6dc7f7803b9613720a