[INFO] fetching crate rev 0.4.1...
[INFO] testing rev-0.4.1 against beta-2021-05-08 for beta-1.53-1
[INFO] extracting crate rev 0.4.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rev 0.4.1 on toolchain beta-2021-05-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-05-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rev 0.4.1
[INFO] finished tweaking crates.io crate rev 0.4.1
[INFO] tweaked toml for crates.io crate rev 0.4.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-05-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-05-08" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-05-08" "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] a22e97758757adab3e52167a25c681a6978b2b4a61fbce99cefda96b83e50e62
[INFO] running `Command { std: "docker" "start" "-a" "a22e97758757adab3e52167a25c681a6978b2b4a61fbce99cefda96b83e50e62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a22e97758757adab3e52167a25c681a6978b2b4a61fbce99cefda96b83e50e62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a22e97758757adab3e52167a25c681a6978b2b4a61fbce99cefda96b83e50e62", kill_on_drop: false }`
[INFO] [stdout] a22e97758757adab3e52167a25c681a6978b2b4a61fbce99cefda96b83e50e62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-05-08" "build" "--frozen" "--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] a7aab8b19d3bc0106e1fb6be719091bff2eeb8a84b34218cdd6e00f64087d19f
[INFO] running `Command { std: "docker" "start" "-a" "a7aab8b19d3bc0106e1fb6be719091bff2eeb8a84b34218cdd6e00f64087d19f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rev v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "a7aab8b19d3bc0106e1fb6be719091bff2eeb8a84b34218cdd6e00f64087d19f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7aab8b19d3bc0106e1fb6be719091bff2eeb8a84b34218cdd6e00f64087d19f", kill_on_drop: false }`
[INFO] [stdout] a7aab8b19d3bc0106e1fb6be719091bff2eeb8a84b34218cdd6e00f64087d19f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-05-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48c6cdb37e6c48068279e02584f005d6b327e36ed905438b24faa257bab01a7d
[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" "48c6cdb37e6c48068279e02584f005d6b327e36ed905438b24faa257bab01a7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rev v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "48c6cdb37e6c48068279e02584f005d6b327e36ed905438b24faa257bab01a7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48c6cdb37e6c48068279e02584f005d6b327e36ed905438b24faa257bab01a7d", kill_on_drop: false }`
[INFO] [stdout] 48c6cdb37e6c48068279e02584f005d6b327e36ed905438b24faa257bab01a7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-05-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 61a3e361472477a77c06a8b9f296da286992c44a5a18a4f546347553a569580b
[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" "61a3e361472477a77c06a8b9f296da286992c44a5a18a4f546347553a569580b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rev-0e5b1dfc79c7e8c3)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rev
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - Rev::rev (line 10) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Rev::rev (line 10) stdout ----
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/lib.rs:14:38
[INFO] [stdout]   |
[INFO] [stdout] 7 | let d: Vec<i32> = x.into_iter().map(|&x| x).collect();
[INFO] [stdout]   |                                      ^--
[INFO] [stdout]   |                                      ||
[INFO] [stdout]   |                                      |expected due to this
[INFO] [stdout]   |                                      expected integer, found reference
[INFO] [stdout]   |                                      help: did you mean `x`: `&{integer}`
[INFO] [stdout]   |
[INFO] [stdout]   = note:   expected type `{integer}`
[INFO] [stdout]           found reference `&_`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Rev::rev (line 10)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "61a3e361472477a77c06a8b9f296da286992c44a5a18a4f546347553a569580b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61a3e361472477a77c06a8b9f296da286992c44a5a18a4f546347553a569580b", kill_on_drop: false }`
[INFO] [stdout] 61a3e361472477a77c06a8b9f296da286992c44a5a18a4f546347553a569580b