[INFO] fetching crate stoppable_thread 0.2.1...
[INFO] testing stoppable_thread-0.2.1 against master#23949593103d03a82c7ebc2e84434ce6c6edc561 for pr-115235
[INFO] extracting crate stoppable_thread 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate stoppable_thread 0.2.1 on toolchain 23949593103d03a82c7ebc2e84434ce6c6edc561
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23949593103d03a82c7ebc2e84434ce6c6edc561" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stoppable_thread 0.2.1
[INFO] finished tweaking crates.io crate stoppable_thread 0.2.1
[INFO] tweaked toml for crates.io crate stoppable_thread 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23949593103d03a82c7ebc2e84434ce6c6edc561" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23949593103d03a82c7ebc2e84434ce6c6edc561" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23949593103d03a82c7ebc2e84434ce6c6edc561" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2566d2a9c36d6989f4d7b40671e092b6da3589d9e720d7cc2d218c612d056307
[INFO] running `Command { std: "docker" "start" "-a" "2566d2a9c36d6989f4d7b40671e092b6da3589d9e720d7cc2d218c612d056307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2566d2a9c36d6989f4d7b40671e092b6da3589d9e720d7cc2d218c612d056307", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2566d2a9c36d6989f4d7b40671e092b6da3589d9e720d7cc2d218c612d056307", kill_on_drop: false }`
[INFO] [stdout] 2566d2a9c36d6989f4d7b40671e092b6da3589d9e720d7cc2d218c612d056307
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23949593103d03a82c7ebc2e84434ce6c6edc561" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f41850a0f58bb8247279ca3f42cc8a1608c69f451c39a65b472e29816ba5de36
[INFO] running `Command { std: "docker" "start" "-a" "f41850a0f58bb8247279ca3f42cc8a1608c69f451c39a65b472e29816ba5de36", kill_on_drop: false }`
[INFO] [stderr]    Compiling stoppable_thread v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "f41850a0f58bb8247279ca3f42cc8a1608c69f451c39a65b472e29816ba5de36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f41850a0f58bb8247279ca3f42cc8a1608c69f451c39a65b472e29816ba5de36", kill_on_drop: false }`
[INFO] [stdout] f41850a0f58bb8247279ca3f42cc8a1608c69f451c39a65b472e29816ba5de36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23949593103d03a82c7ebc2e84434ce6c6edc561" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c274764000caf99fbb15337605d0785bb2b0e7c552eddb83cb9349a292c98464
[INFO] running `Command { std: "docker" "start" "-a" "c274764000caf99fbb15337605d0785bb2b0e7c552eddb83cb9349a292c98464", kill_on_drop: false }`
[INFO] [stderr]    Compiling stoppable_thread v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `stopping`
[INFO] [stdout]    --> src/lib.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |         let stopping = Stopping::new(spawn(move |stopped|
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stopping`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `joining`
[INFO] [stdout]    --> src/lib.rs:229:13
[INFO] [stdout]     |
[INFO] [stdout] 229 |         let joining = Joining::new(spawn(move |stopped|
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_joining`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "c274764000caf99fbb15337605d0785bb2b0e7c552eddb83cb9349a292c98464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c274764000caf99fbb15337605d0785bb2b0e7c552eddb83cb9349a292c98464", kill_on_drop: false }`
[INFO] [stdout] c274764000caf99fbb15337605d0785bb2b0e7c552eddb83cb9349a292c98464
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4f8da3c744d2da974e54ce020a79f4ad54313e914ebeaab8fc086f07e8d8b066" "/opt/rustwide/cargo-home/bin/cargo" "+23949593103d03a82c7ebc2e84434ce6c6edc561" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9de65ae6503421f94e28fef771b7a6d2674472d319cbf7d567d421df1f050c3d
[INFO] running `Command { std: "docker" "start" "-a" "9de65ae6503421f94e28fef771b7a6d2674472d319cbf7d567d421df1f050c3d", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `stopping`
[INFO] [stderr]    --> src/lib.rs:225:13
[INFO] [stderr]     |
[INFO] [stderr] 225 |         let stopping = Stopping::new(spawn(move |stopped|
[INFO] [stderr]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stopping`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `joining`
[INFO] [stderr]    --> src/lib.rs:229:13
[INFO] [stderr]     |
[INFO] [stderr] 229 |         let joining = Joining::new(spawn(move |stopped|
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_joining`
[INFO] [stderr] 
[INFO] [stderr] warning: `stoppable_thread` (lib test) generated 2 warnings (run `cargo fix --lib -p stoppable_thread --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stoppable_thread-90e84f30f5374d2f)
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_stoppable_thead ... ok
[INFO] [stdout] test test_guard ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stoppable_thread
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.43s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9de65ae6503421f94e28fef771b7a6d2674472d319cbf7d567d421df1f050c3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9de65ae6503421f94e28fef771b7a6d2674472d319cbf7d567d421df1f050c3d", kill_on_drop: false }`
[INFO] [stdout] 9de65ae6503421f94e28fef771b7a6d2674472d319cbf7d567d421df1f050c3d