[INFO] fetching crate graco 0.1.3...
[INFO] checking graco-0.1.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate graco 0.1.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate graco 0.1.3
[INFO] finished tweaking crates.io crate graco 0.1.3
[INFO] tweaked toml for crates.io crate graco 0.1.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate graco 0.1.3 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate graco 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20c3d3583c88f44a7f6f6e68e8ec99d9b7f6d36520b879fb41216163b7a736c5
[INFO] running `Command { std: "docker" "start" "-a" "20c3d3583c88f44a7f6f6e68e8ec99d9b7f6d36520b879fb41216163b7a736c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20c3d3583c88f44a7f6f6e68e8ec99d9b7f6d36520b879fb41216163b7a736c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20c3d3583c88f44a7f6f6e68e8ec99d9b7f6d36520b879fb41216163b7a736c5", kill_on_drop: false }`
[INFO] [stdout] 20c3d3583c88f44a7f6f6e68e8ec99d9b7f6d36520b879fb41216163b7a736c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2deda85c3b1564fe682d767dc0a0bc75409ec79b61149a96b06f148169488fa6
[INFO] running `Command { std: "docker" "start" "-a" "2deda85c3b1564fe682d767dc0a0bc75409ec79b61149a96b06f148169488fa6", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking humantime v1.2.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]     Checking structopt v0.2.15
[INFO] [stderr]     Checking graco v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> src/colony.rs:348:45
[INFO] [stdout]     |
[INFO] [stdout] 348 |         Colony::with_input_path(colony_opt, PathBuf::from_str("complete_graph.txt").unwrap());
[INFO] [stdout]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `graco` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2deda85c3b1564fe682d767dc0a0bc75409ec79b61149a96b06f148169488fa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2deda85c3b1564fe682d767dc0a0bc75409ec79b61149a96b06f148169488fa6", kill_on_drop: false }`
[INFO] [stdout] 2deda85c3b1564fe682d767dc0a0bc75409ec79b61149a96b06f148169488fa6
