[INFO] fetching crate ve 0.0.3...
[INFO] checking ve-0.0.3 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate ve 0.0.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ve 0.0.3 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ve 0.0.3
[INFO] finished tweaking crates.io crate ve 0.0.3
[INFO] tweaked toml for crates.io crate ve 0.0.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d78447b2e5243804bd03102935f0665f85e6793af698d29887965dd7bb54ce4
[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" "2d78447b2e5243804bd03102935f0665f85e6793af698d29887965dd7bb54ce4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d78447b2e5243804bd03102935f0665f85e6793af698d29887965dd7bb54ce4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d78447b2e5243804bd03102935f0665f85e6793af698d29887965dd7bb54ce4", kill_on_drop: false }`
[INFO] [stdout] 2d78447b2e5243804bd03102935f0665f85e6793af698d29887965dd7bb54ce4
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7b1c2e5a114142bbbbd0588be4450b0f413d4ad384a028fb6ac5dd61d57bf0c
[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" "b7b1c2e5a114142bbbbd0588be4450b0f413d4ad384a028fb6ac5dd61d57bf0c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `Command { std: "docker" "inspect" "b7b1c2e5a114142bbbbd0588be4450b0f413d4ad384a028fb6ac5dd61d57bf0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7b1c2e5a114142bbbbd0588be4450b0f413d4ad384a028fb6ac5dd61d57bf0c", kill_on_drop: false }`
[INFO] [stdout] b7b1c2e5a114142bbbbd0588be4450b0f413d4ad384a028fb6ac5dd61d57bf0c