[INFO] fetching crate semka 2.0.4...
[INFO] testing semka-2.0.4 against 1.55.0 for beta-1.56-1
[INFO] extracting crate semka 2.0.4 into /workspace/builds/worker-92/source
[INFO] validating manifest of crates.io crate semka 2.0.4 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate semka 2.0.4
[INFO] finished tweaking crates.io crate semka 2.0.4
[INFO] tweaked toml for crates.io crate semka 2.0.4 written to /workspace/builds/worker-92/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ece93393d8037a9095cb724a551d53a23e7a87a1f54362daf44c3757a205ef41
[INFO] running `Command { std: "docker" "start" "-a" "ece93393d8037a9095cb724a551d53a23e7a87a1f54362daf44c3757a205ef41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ece93393d8037a9095cb724a551d53a23e7a87a1f54362daf44c3757a205ef41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ece93393d8037a9095cb724a551d53a23e7a87a1f54362daf44c3757a205ef41", kill_on_drop: false }`
[INFO] [stdout] ece93393d8037a9095cb724a551d53a23e7a87a1f54362daf44c3757a205ef41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b2644143009dd3b9e3b8bb7440c2380ea39e839c3886019a4faae7dc7464a6a
[INFO] running `Command { std: "docker" "start" "-a" "2b2644143009dd3b9e3b8bb7440c2380ea39e839c3886019a4faae7dc7464a6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling str-buf v1.0.5
[INFO] [stderr]    Compiling error-code v2.3.0
[INFO] [stderr]    Compiling semka v2.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.21s
[INFO] running `Command { std: "docker" "inspect" "2b2644143009dd3b9e3b8bb7440c2380ea39e839c3886019a4faae7dc7464a6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b2644143009dd3b9e3b8bb7440c2380ea39e839c3886019a4faae7dc7464a6a", kill_on_drop: false }`
[INFO] [stdout] 2b2644143009dd3b9e3b8bb7440c2380ea39e839c3886019a4faae7dc7464a6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 076b7f415412d11ed74ade985ba14ce2aa66ad0fb5e52e782b977cf952708a3c
[INFO] running `Command { std: "docker" "start" "-a" "076b7f415412d11ed74ade985ba14ce2aa66ad0fb5e52e782b977cf952708a3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling semka v2.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "076b7f415412d11ed74ade985ba14ce2aa66ad0fb5e52e782b977cf952708a3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "076b7f415412d11ed74ade985ba14ce2aa66ad0fb5e52e782b977cf952708a3c", kill_on_drop: false }`
[INFO] [stdout] 076b7f415412d11ed74ade985ba14ce2aa66ad0fb5e52e782b977cf952708a3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3558ab766cffce77e2325afaa701a9e7284fce67f72c0bc022876afa6bd01e58
[INFO] running `Command { std: "docker" "start" "-a" "3558ab766cffce77e2325afaa701a9e7284fce67f72c0bc022876afa6bd01e58", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/semka-e147e0f2b0559d17)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/sem.rs (/opt/rustwide/target/debug/deps/sem-8f7326a29a39748f)
[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 4 tests
[INFO] [stdout] test should_fail_init_twice ... ok
[INFO] [stdout] test should_init_after_close ... ok
[INFO] [stdout] test should_return_when_signaled_counting ... ok
[INFO] [stdout] test should_timeout_on_wait ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.38s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests semka
[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" "3558ab766cffce77e2325afaa701a9e7284fce67f72c0bc022876afa6bd01e58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3558ab766cffce77e2325afaa701a9e7284fce67f72c0bc022876afa6bd01e58", kill_on_drop: false }`
[INFO] [stdout] 3558ab766cffce77e2325afaa701a9e7284fce67f72c0bc022876afa6bd01e58