[INFO] fetching crate watchdo 0.1.2...
[INFO] checking watchdo-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate watchdo 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate watchdo 0.1.2
[INFO] finished tweaking crates.io crate watchdo 0.1.2
[INFO] tweaked toml for crates.io crate watchdo 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate watchdo 0.1.2 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 watchdo 0.1.2 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1c207ab6f243506ffcbaff3538ebccef9818b062773d2aa38e6f22131fff52d0
[INFO] running `Command { std: "docker" "start" "-a" "1c207ab6f243506ffcbaff3538ebccef9818b062773d2aa38e6f22131fff52d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c207ab6f243506ffcbaff3538ebccef9818b062773d2aa38e6f22131fff52d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c207ab6f243506ffcbaff3538ebccef9818b062773d2aa38e6f22131fff52d0", kill_on_drop: false }`
[INFO] [stdout] 1c207ab6f243506ffcbaff3538ebccef9818b062773d2aa38e6f22131fff52d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ec5ad92718b0d96268810ab80ec7969365654560b117be13c2c248dbcd6c821c
[INFO] running `Command { std: "docker" "start" "-a" "ec5ad92718b0d96268810ab80ec7969365654560b117be13c2c248dbcd6c821c", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking normalize-line-endings v0.2.2
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking subprocess v0.2.3
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking downcast v0.10.0
[INFO] [stderr]     Checking fragile v0.3.0
[INFO] [stderr]     Checking inotify v0.7.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.2
[INFO] [stderr]    Compiling mockall_derive v0.5.1
[INFO] [stderr]     Checking structopt v0.3.2
[INFO] [stderr]     Checking watchdo v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     #[structopt(long, default_value = "✓")]
[INFO] [stdout] 30 | |     ok_str: String,
[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 `watchdo` (bin "watchdo") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ec5ad92718b0d96268810ab80ec7969365654560b117be13c2c248dbcd6c821c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec5ad92718b0d96268810ab80ec7969365654560b117be13c2c248dbcd6c821c", kill_on_drop: false }`
[INFO] [stdout] ec5ad92718b0d96268810ab80ec7969365654560b117be13c2c248dbcd6c821c