[INFO] fetching crate oxidize 0.2.1...
[INFO] checking oxidize-0.2.1 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate oxidize 0.2.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate oxidize 0.2.1 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate oxidize 0.2.1
[INFO] finished tweaking crates.io crate oxidize 0.2.1
[INFO] tweaked toml for crates.io crate oxidize 0.2.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", 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] 24fa14c211e42b7a1c161263e31b4a07f7cb1c1f55563b60c3c8825d1bd377fb
[INFO] running `Command { std: "docker" "start" "-a" "24fa14c211e42b7a1c161263e31b4a07f7cb1c1f55563b60c3c8825d1bd377fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24fa14c211e42b7a1c161263e31b4a07f7cb1c1f55563b60c3c8825d1bd377fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24fa14c211e42b7a1c161263e31b4a07f7cb1c1f55563b60c3c8825d1bd377fb", kill_on_drop: false }`
[INFO] [stdout] 24fa14c211e42b7a1c161263e31b4a07f7cb1c1f55563b60c3c8825d1bd377fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 135c4ee431e13c18d0c9faef249e4b0e46c074270aaead4b7fd17b0c8fca9836
[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" "135c4ee431e13c18d0c9faef249e4b0e46c074270aaead4b7fd17b0c8fca9836", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking oxidize v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/matchers/option.rs:18:54
[INFO] [stdout]    |
[INFO] [stdout] 18 |         format!("expected {:?} to be Some<{}>", lhs, unsafe { type_name::<T>() })
[INFO] [stdout]    |                                                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/matchers/option.rs:28:54
[INFO] [stdout]    |
[INFO] [stdout] 28 |         format!("expected {:?} to be Some<{}>", lhs, unsafe { type_name::<T>() })
[INFO] [stdout]    |                                                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]   --> src/matchers/option.rs:18:54
[INFO] [stdout]    |
[INFO] [stdout] 18 |         format!("expected {:?} to be Some<{}>", lhs, unsafe { type_name::<T>() })
[INFO] [stdout]    |                                                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:3:24
[INFO] [stdout]    |
[INFO] [stdout] 3  | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_unsafe)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unnecessary `unsafe` block
[INFO] [stdout]   --> src/matchers/option.rs:28:54
[INFO] [stdout]    |
[INFO] [stdout] 28 |         format!("expected {:?} to be Some<{}>", lhs, unsafe { type_name::<T>() })
[INFO] [stdout]    |                                                      ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `oxidize`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "135c4ee431e13c18d0c9faef249e4b0e46c074270aaead4b7fd17b0c8fca9836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "135c4ee431e13c18d0c9faef249e4b0e46c074270aaead4b7fd17b0c8fca9836", kill_on_drop: false }`
[INFO] [stdout] 135c4ee431e13c18d0c9faef249e4b0e46c074270aaead4b7fd17b0c8fca9836