[INFO] fetching crate retro 0.1.1...
[INFO] testing retro-0.1.1 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate retro 0.1.1 into /workspace/builds/worker-99/source
[INFO] validating manifest of crates.io crate retro 0.1.1 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate retro 0.1.1
[INFO] finished tweaking crates.io crate retro 0.1.1
[INFO] tweaked toml for crates.io crate retro 0.1.1 written to /workspace/builds/worker-99/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--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-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1417405c6c858db17b7a654f8d5773e714b690da6eb8ee6e5b28ecd248c68a93
[INFO] running `Command { std: "docker" "start" "-a" "1417405c6c858db17b7a654f8d5773e714b690da6eb8ee6e5b28ecd248c68a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1417405c6c858db17b7a654f8d5773e714b690da6eb8ee6e5b28ecd248c68a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1417405c6c858db17b7a654f8d5773e714b690da6eb8ee6e5b28ecd248c68a93", kill_on_drop: false }`
[INFO] [stdout] 1417405c6c858db17b7a654f8d5773e714b690da6eb8ee6e5b28ecd248c68a93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94ea0842367e85c2111631b24974715d895728690dd295342837c36f9438cf36
[INFO] running `Command { std: "docker" "start" "-a" "94ea0842367e85c2111631b24974715d895728690dd295342837c36f9438cf36", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling encode_unicode v0.1.3
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling rustyline v1.0.0
[INFO] [stderr]    Compiling retro v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:888:7
[INFO] [stdout]     |
[INFO] [stdout] 888 |       _ => unreachable!(),
[INFO] [stdout]     |       ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/main.rs:1168:7
[INFO] [stdout]      |
[INFO] [stdout] 1168 |       _ => unreachable!(),
[INFO] [stdout]      |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.38s
[INFO] running `Command { std: "docker" "inspect" "94ea0842367e85c2111631b24974715d895728690dd295342837c36f9438cf36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94ea0842367e85c2111631b24974715d895728690dd295342837c36f9438cf36", kill_on_drop: false }`
[INFO] [stdout] 94ea0842367e85c2111631b24974715d895728690dd295342837c36f9438cf36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce84d2a1c0b773aa1e302eac0b3b641121a781abe4ad57a8f2a654f0037ac639
[INFO] running `Command { std: "docker" "start" "-a" "ce84d2a1c0b773aa1e302eac0b3b641121a781abe4ad57a8f2a654f0037ac639", kill_on_drop: false }`
[INFO] [stderr]    Compiling retro v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:888:7
[INFO] [stdout]     |
[INFO] [stdout] 888 |       _ => unreachable!(),
[INFO] [stdout]     |       ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> src/main.rs:1168:7
[INFO] [stdout]      |
[INFO] [stdout] 1168 |       _ => unreachable!(),
[INFO] [stdout]      |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "ce84d2a1c0b773aa1e302eac0b3b641121a781abe4ad57a8f2a654f0037ac639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce84d2a1c0b773aa1e302eac0b3b641121a781abe4ad57a8f2a654f0037ac639", kill_on_drop: false }`
[INFO] [stdout] ce84d2a1c0b773aa1e302eac0b3b641121a781abe4ad57a8f2a654f0037ac639
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5f078b7b7b6faff5a8a9c90074ee35f581295786e68a30ecc0d96a0a5e1fe8ad
[INFO] running `Command { std: "docker" "start" "-a" "5f078b7b7b6faff5a8a9c90074ee35f581295786e68a30ecc0d96a0a5e1fe8ad", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/main.rs:888:7
[INFO] [stderr]     |
[INFO] [stderr] 888 |       _ => unreachable!(),
[INFO] [stderr]     |       ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]     --> src/main.rs:1168:7
[INFO] [stderr]      |
[INFO] [stderr] 1168 |       _ => unreachable!(),
[INFO] [stderr]      |       ^
[INFO] [stderr] 
[INFO] [stderr] warning: `retro` (bin "retro" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/retro-a2b309488e0e5044)
[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] running `Command { std: "docker" "inspect" "5f078b7b7b6faff5a8a9c90074ee35f581295786e68a30ecc0d96a0a5e1fe8ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f078b7b7b6faff5a8a9c90074ee35f581295786e68a30ecc0d96a0a5e1fe8ad", kill_on_drop: false }`
[INFO] [stdout] 5f078b7b7b6faff5a8a9c90074ee35f581295786e68a30ecc0d96a0a5e1fe8ad