[INFO] fetching crate watchdo 0.1.2...
[INFO] checking watchdo-0.1.2 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate watchdo 0.1.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate watchdo 0.1.2 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-8/source/Cargo.toml
[INFO] crate crates.io crate watchdo 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded iovec v0.1.2
[INFO] [stderr]   Downloaded notify v4.0.15
[INFO] [stderr]   Downloaded term_size v0.3.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.5
[INFO] [stderr]   Downloaded syn v1.0.5
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[INFO] [stderr]   Downloaded rgb v0.8.14
[INFO] [stderr]   Downloaded smallvec v0.6.10
[INFO] [stderr]   Downloaded fragile v0.3.0
[INFO] [stderr]   Downloaded winconsole v0.10.0
[INFO] [stderr]   Downloaded approx v0.1.1
[INFO] [stderr]   Downloaded crossbeam-channel v0.3.8
[INFO] [stderr]   Downloaded filetime v0.2.7
[INFO] [stderr]   Downloaded mockall_derive v0.5.1
[INFO] [stderr]   Downloaded predicates v1.0.1
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[INFO] [stderr]   Downloaded inotify-sys v0.1.3
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[INFO] [stderr]   Downloaded mio-extras v2.0.5
[INFO] [stderr]   Downloaded subprocess v0.2.3
[INFO] [stderr]   Downloaded colored v1.8.0
[INFO] [stderr]   Downloaded mockall v0.5.1
[INFO] [stderr]   Downloaded autocfg v0.1.6
[INFO] [stderr]   Downloaded downcast v0.10.0
[INFO] [stderr]   Downloaded lazycell v1.2.1
[INFO] [stderr]   Downloaded mio v0.6.19
[INFO] [stderr]   Downloaded proc-macro-error v0.2.6
[INFO] [stderr]   Downloaded structopt-derive v0.3.2
[INFO] [stderr]   Downloaded structopt v0.3.2
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21811dd1c7bb1259b98d48562557060e8a7a7ba89b03e7fef4b8da6c8237bcfe
[INFO] running `Command { std: "docker" "start" "-a" "21811dd1c7bb1259b98d48562557060e8a7a7ba89b03e7fef4b8da6c8237bcfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21811dd1c7bb1259b98d48562557060e8a7a7ba89b03e7fef4b8da6c8237bcfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21811dd1c7bb1259b98d48562557060e8a7a7ba89b03e7fef4b8da6c8237bcfe", kill_on_drop: false }`
[INFO] [stdout] 21811dd1c7bb1259b98d48562557060e8a7a7ba89b03e7fef4b8da6c8237bcfe
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55dffd12fafeb062f779a1c3591075fd50f59493cd069e55680cf5466b51eed6
[INFO] running `Command { std: "docker" "start" "-a" "55dffd12fafeb062f779a1c3591075fd50f59493cd069e55680cf5466b51eed6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[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 winapi v0.3.8
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking rgb v0.8.14
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking normalize-line-endings v0.2.2
[INFO] [stderr]     Checking fragile v0.3.0
[INFO] [stderr]     Checking downcast v0.10.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking subprocess v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking inotify v0.7.0
[INFO] [stderr]     Checking globset v0.4.4
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking ignore v0.4.10
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking notify v4.0.15
[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] [stderr]     Checking mockall v0.5.1
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]  --> src/executor.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg_attr(test, mockall::automock)]
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]   = note: this warning originates in the attribute macro `mockall::automock` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]  --> src/executor.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg_attr(test, mockall::automock)]
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]   = note: this warning originates in the attribute macro `mockall::automock` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/executor.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | #[cfg_attr(test, mockall::automock(type Child=MockChild;))]
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: this warning originates in the attribute macro `mockall::automock` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.79s
[INFO] running `Command { std: "docker" "inspect" "55dffd12fafeb062f779a1c3591075fd50f59493cd069e55680cf5466b51eed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55dffd12fafeb062f779a1c3591075fd50f59493cd069e55680cf5466b51eed6", kill_on_drop: false }`
[INFO] [stdout] 55dffd12fafeb062f779a1c3591075fd50f59493cd069e55680cf5466b51eed6