[INFO] fetching crate uexec 0.1.4...
[INFO] testing uexec-0.1.4 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate uexec 0.1.4 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate uexec 0.1.4 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uexec 0.1.4
[INFO] finished tweaking crates.io crate uexec 0.1.4
[INFO] tweaked toml for crates.io crate uexec 0.1.4 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate uexec 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fastrand v1.4.1
[INFO] [stderr]   Downloaded easy-parallel v3.1.0
[INFO] [stderr]   Downloaded nanorand v0.5.2
[INFO] [stderr]   Downloaded spinning_top v0.2.3
[INFO] [stderr]   Downloaded futures-io v0.3.14
[INFO] [stderr]   Downloaded futures-lite v1.11.3
[INFO] [stderr]   Downloaded flume v0.10.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52898f298d1442b9c486a529ed95c5324d49ae4306de69f7be22f1ca253ceb3e
[INFO] running `Command { std: "docker" "start" "-a" "52898f298d1442b9c486a529ed95c5324d49ae4306de69f7be22f1ca253ceb3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52898f298d1442b9c486a529ed95c5324d49ae4306de69f7be22f1ca253ceb3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52898f298d1442b9c486a529ed95c5324d49ae4306de69f7be22f1ca253ceb3e", kill_on_drop: false }`
[INFO] [stdout] 52898f298d1442b9c486a529ed95c5324d49ae4306de69f7be22f1ca253ceb3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc308116c7b3a2aa5bead4616c30265b0e1ace19f570990f734f9a311f638f7e
[INFO] running `Command { std: "docker" "start" "-a" "cc308116c7b3a2aa5bead4616c30265b0e1ace19f570990f734f9a311f638f7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling futures-core v0.3.14
[INFO] [stderr]    Compiling futures-sink v0.3.14
[INFO] [stderr]    Compiling fastrand v1.4.1
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling spinning_top v0.2.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling nanorand v0.5.2
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling pin-project v1.0.7
[INFO] [stderr]    Compiling flume v0.10.5
[INFO] [stderr]    Compiling uexec v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.72s
[INFO] running `Command { std: "docker" "inspect" "cc308116c7b3a2aa5bead4616c30265b0e1ace19f570990f734f9a311f638f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc308116c7b3a2aa5bead4616c30265b0e1ace19f570990f734f9a311f638f7e", kill_on_drop: false }`
[INFO] [stdout] cc308116c7b3a2aa5bead4616c30265b0e1ace19f570990f734f9a311f638f7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2e22918644a4ecdf6b6a8fccc07e5a37594523077c6c4576a83f462df2e27ca
[INFO] running `Command { std: "docker" "start" "-a" "a2e22918644a4ecdf6b6a8fccc07e5a37594523077c6c4576a83f462df2e27ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling futures-io v0.3.14
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling easy-parallel v3.1.0
[INFO] [stderr]    Compiling futures-lite v1.11.3
[INFO] [stderr]    Compiling uexec v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.79s
[INFO] running `Command { std: "docker" "inspect" "a2e22918644a4ecdf6b6a8fccc07e5a37594523077c6c4576a83f462df2e27ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2e22918644a4ecdf6b6a8fccc07e5a37594523077c6c4576a83f462df2e27ca", kill_on_drop: false }`
[INFO] [stdout] a2e22918644a4ecdf6b6a8fccc07e5a37594523077c6c4576a83f462df2e27ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d189c823b4404a0dc85fb3fb162126034bffcbb517b6fdcd86c6bff7aaa6c09d
[INFO] running `Command { std: "docker" "start" "-a" "d189c823b4404a0dc85fb3fb162126034bffcbb517b6fdcd86c6bff7aaa6c09d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/uexec-dc4dc50ca2cded20)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/basic.rs (/opt/rustwide/target/debug/deps/basic-1cfea750aa9b216c)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running tests/cancel.rs (/opt/rustwide/target/debug/deps/cancel-d514bf7e6e3b6fd8)
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test basic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test cancel_finished ... ok
[INFO] [stdout] test cancel_pending ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/workers.rs (/opt/rustwide/target/debug/deps/workers-60b7f41d331cb44b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running tests/yield_now.rs (/opt/rustwide/target/debug/deps/yield_now-e55afbcee2f6c7fa)
[INFO] [stdout] test workers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.34s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test yield_now ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests uexec
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - spawn_workers (line 147) ... ok
[INFO] [stdout] test src/lib.rs - terminate_workers (line 160) ... ok
[INFO] [stdout] test src/lib.rs - spawn (line 98) ... ok
[INFO] [stdout] test src/lib.rs - block_on (line 82) ... ok
[INFO] [stdout] test src/lib.rs - spawn_local (line 124) ... ok
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] test src/lib.rs - (line 50) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.12s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d189c823b4404a0dc85fb3fb162126034bffcbb517b6fdcd86c6bff7aaa6c09d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d189c823b4404a0dc85fb3fb162126034bffcbb517b6fdcd86c6bff7aaa6c09d", kill_on_drop: false }`
[INFO] [stdout] d189c823b4404a0dc85fb3fb162126034bffcbb517b6fdcd86c6bff7aaa6c09d