[INFO] fetching crate vec1 1.6.0...
[INFO] checking vec1-1.6.0 against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] extracting crate vec1 1.6.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate vec1 1.6.0 on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vec1 1.6.0
[INFO] finished tweaking crates.io crate vec1 1.6.0
[INFO] tweaked toml for crates.io crate vec1 1.6.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f00256ffb807af87cf8ba6fbe37dbc0227bf8367354cc60d8ac4e66e3cdf5fe7
[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" "f00256ffb807af87cf8ba6fbe37dbc0227bf8367354cc60d8ac4e66e3cdf5fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f00256ffb807af87cf8ba6fbe37dbc0227bf8367354cc60d8ac4e66e3cdf5fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f00256ffb807af87cf8ba6fbe37dbc0227bf8367354cc60d8ac4e66e3cdf5fe7", kill_on_drop: false }`
[INFO] [stdout] f00256ffb807af87cf8ba6fbe37dbc0227bf8367354cc60d8ac4e66e3cdf5fe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13b8b39057d88ad43ea82e9700b99cda485da1b6be684dd9663a08ed75572ccc
[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" "13b8b39057d88ad43ea82e9700b99cda485da1b6be684dd9663a08ed75572ccc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking vec1 v1.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1138:46
[INFO] [stdout]      |
[INFO] [stdout] 1138 |             fn chk<E, T: BorrowMut<[E]>>() {};
[INFO] [stdout]      |                                              ^ help: remove this semicolon
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1144:46
[INFO] [stdout]      |
[INFO] [stdout] 1144 |             fn chk<E, T: BorrowMut<[E]>>() {};
[INFO] [stdout]      |                                              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1150:42
[INFO] [stdout]      |
[INFO] [stdout] 1150 |             fn chk<E, T: AsMut<[E]>>() {};
[INFO] [stdout]      |                                          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1156:42
[INFO] [stdout]      |
[INFO] [stdout] 1156 |             fn chk<E, T: AsRef<[E]>>() {};
[INFO] [stdout]      |                                          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1161:46
[INFO] [stdout]      |
[INFO] [stdout] 1161 |             fn chk<E, T: AsMut<Vec1<E>>>() {};
[INFO] [stdout]      |                                              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1167:46
[INFO] [stdout]      |
[INFO] [stdout] 1167 |             fn chk<E, T: AsRef<Vec1<E>>>() {};
[INFO] [stdout]      |                                              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1173:45
[INFO] [stdout]      |
[INFO] [stdout] 1173 |             fn chk<E, T: AsRef<Vec<E>>>() {};
[INFO] [stdout]      |                                             ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.24s
[INFO] running `Command { std: "docker" "inspect" "13b8b39057d88ad43ea82e9700b99cda485da1b6be684dd9663a08ed75572ccc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13b8b39057d88ad43ea82e9700b99cda485da1b6be684dd9663a08ed75572ccc", kill_on_drop: false }`
[INFO] [stdout] 13b8b39057d88ad43ea82e9700b99cda485da1b6be684dd9663a08ed75572ccc