[INFO] fetching crate watchcraft 0.0.1...
[INFO] testing watchcraft-0.0.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate watchcraft 0.0.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate watchcraft 0.0.1
[INFO] finished tweaking crates.io crate watchcraft 0.0.1
[INFO] tweaked toml for crates.io crate watchcraft 0.0.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate watchcraft 0.0.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate watchcraft 0.0.1 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57f1a1cf29d36ffaabd6dd0a3cdd66c68a57575471c20f04ae4ab1f740ea60e8
[INFO] running `Command { std: "docker" "start" "-a" "57f1a1cf29d36ffaabd6dd0a3cdd66c68a57575471c20f04ae4ab1f740ea60e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57f1a1cf29d36ffaabd6dd0a3cdd66c68a57575471c20f04ae4ab1f740ea60e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57f1a1cf29d36ffaabd6dd0a3cdd66c68a57575471c20f04ae4ab1f740ea60e8", kill_on_drop: false }`
[INFO] [stdout] 57f1a1cf29d36ffaabd6dd0a3cdd66c68a57575471c20f04ae4ab1f740ea60e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c15c87ca0b989f606de6fddce7d089a112ee5b62d5eac1a4213622b2719aff3e
[INFO] running `Command { std: "docker" "start" "-a" "c15c87ca0b989f606de6fddce7d089a112ee5b62d5eac1a4213622b2719aff3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling watchcraft v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `explicit_tail_calls` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(explicit_tail_calls)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #112788 <https://github.com/rust-lang/rust/issues/112788> for more information
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `explicit_tail_calls` is declared but not used
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(explicit_tail_calls)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "c15c87ca0b989f606de6fddce7d089a112ee5b62d5eac1a4213622b2719aff3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c15c87ca0b989f606de6fddce7d089a112ee5b62d5eac1a4213622b2719aff3e", kill_on_drop: false }`
[INFO] [stdout] c15c87ca0b989f606de6fddce7d089a112ee5b62d5eac1a4213622b2719aff3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d23ec9a59b3dbb05046654b4546c84da95dd39ecd10f9c3da308c1c2934f0ca2
[INFO] running `Command { std: "docker" "start" "-a" "d23ec9a59b3dbb05046654b4546c84da95dd39ecd10f9c3da308c1c2934f0ca2", kill_on_drop: false }`
[INFO] [stderr]    Compiling watchcraft v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `explicit_tail_calls` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(explicit_tail_calls)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #112788 <https://github.com/rust-lang/rust/issues/112788> for more information
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `explicit_tail_calls` is declared but not used
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(explicit_tail_calls)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "d23ec9a59b3dbb05046654b4546c84da95dd39ecd10f9c3da308c1c2934f0ca2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d23ec9a59b3dbb05046654b4546c84da95dd39ecd10f9c3da308c1c2934f0ca2", kill_on_drop: false }`
[INFO] [stdout] d23ec9a59b3dbb05046654b4546c84da95dd39ecd10f9c3da308c1c2934f0ca2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7c3eaedd91f1a0a03e5f1d3103a8edfc3658fdbfed76057019672f1f10e5af01
[INFO] running `Command { std: "docker" "start" "-a" "7c3eaedd91f1a0a03e5f1d3103a8edfc3658fdbfed76057019672f1f10e5af01", kill_on_drop: false }`
[INFO] [stderr] warning: the feature `explicit_tail_calls` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(explicit_tail_calls)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: see issue #112788 <https://github.com/rust-lang/rust/issues/112788> for more information
[INFO] [stderr]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: feature `explicit_tail_calls` is declared but not used
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(explicit_tail_calls)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `watchcraft` (bin "watchcraft" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/watchcraft-dea2c0d6f61d2605)
[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" "7c3eaedd91f1a0a03e5f1d3103a8edfc3658fdbfed76057019672f1f10e5af01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c3eaedd91f1a0a03e5f1d3103a8edfc3658fdbfed76057019672f1f10e5af01", kill_on_drop: false }`
[INFO] [stdout] 7c3eaedd91f1a0a03e5f1d3103a8edfc3658fdbfed76057019672f1f10e5af01