[INFO] fetching crate linux_once 0.1.1...
[INFO] testing linux_once-0.1.1 against try#fc4ba03ef77ca5018fb78a097d3b924d30f15bfc+target=i686-unknown-linux-musl for musl_upgrade_1_2_take4
[INFO] extracting crate linux_once 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate linux_once 0.1.1 on toolchain fc4ba03ef77ca5018fb78a097d3b924d30f15bfc
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linux_once 0.1.1
[INFO] finished tweaking crates.io crate linux_once 0.1.1
[INFO] tweaked toml for crates.io crate linux_once 0.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linux-futex v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 697f53b4876e209794cc693b549708f9910d990b84f0ae10d6f4636d25694ece
[INFO] running `Command { std: "docker" "start" "-a" "697f53b4876e209794cc693b549708f9910d990b84f0ae10d6f4636d25694ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "697f53b4876e209794cc693b549708f9910d990b84f0ae10d6f4636d25694ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "697f53b4876e209794cc693b549708f9910d990b84f0ae10d6f4636d25694ece", kill_on_drop: false }`
[INFO] [stdout] 697f53b4876e209794cc693b549708f9910d990b84f0ae10d6f4636d25694ece
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "build" "--frozen" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] f289b33131e11e9413eab96be818164c5fac309cc1947bbaef189436d8fb68ce
[INFO] running `Command { std: "docker" "start" "-a" "f289b33131e11e9413eab96be818164c5fac309cc1947bbaef189436d8fb68ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling linux-futex v0.1.2
[INFO] [stderr]    Compiling linux_once v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "f289b33131e11e9413eab96be818164c5fac309cc1947bbaef189436d8fb68ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f289b33131e11e9413eab96be818164c5fac309cc1947bbaef189436d8fb68ce", kill_on_drop: false }`
[INFO] [stdout] f289b33131e11e9413eab96be818164c5fac309cc1947bbaef189436d8fb68ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--no-run" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 389cae89fbd975dced99bb41c49d5304d58d1c977d54eabf6fa43b1aad5269ef
[INFO] running `Command { std: "docker" "start" "-a" "389cae89fbd975dced99bb41c49d5304d58d1c977d54eabf6fa43b1aad5269ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling linux_once v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "389cae89fbd975dced99bb41c49d5304d58d1c977d54eabf6fa43b1aad5269ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "389cae89fbd975dced99bb41c49d5304d58d1c977d54eabf6fa43b1aad5269ef", kill_on_drop: false }`
[INFO] [stdout] 389cae89fbd975dced99bb41c49d5304d58d1c977d54eabf6fa43b1aad5269ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 2fca0afbf9c1019835a634bc74d8f0396032c672aad0fad5e811b84d68eb6be8
[INFO] running `Command { std: "docker" "start" "-a" "2fca0afbf9c1019835a634bc74d8f0396032c672aad0fad5e811b84d68eb6be8", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/i686-unknown-linux-musl/debug/deps/linux_once-79600d978888a4a1)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test our_tests::basic ... ok
[INFO] [stdout] test tests::smoke_once ... ok
[INFO] [stdout] test our_tests::multithreaded ... ok
[INFO] [stdout] test tests::stampede_once ... ok
[INFO] [stdout] test tests::poison_bad ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2fca0afbf9c1019835a634bc74d8f0396032c672aad0fad5e811b84d68eb6be8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fca0afbf9c1019835a634bc74d8f0396032c672aad0fad5e811b84d68eb6be8", kill_on_drop: false }`
[INFO] [stdout] 2fca0afbf9c1019835a634bc74d8f0396032c672aad0fad5e811b84d68eb6be8