[INFO] fetching crate nsenter 0.0.1...
[INFO] testing nsenter-0.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate nsenter 0.0.1 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate nsenter 0.0.1 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 nsenter 0.0.1
[INFO] finished tweaking crates.io crate nsenter 0.0.1
[INFO] tweaked toml for crates.io crate nsenter 0.0.1 written to /workspace/builds/worker-26/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]  Downloading crates ...
[INFO] [stderr]   Downloaded argparse v0.2.2
[INFO] [stderr]   Downloaded nsutils v0.0.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] 0a6c1b0de5b5032ec12e9424494352b1c75c510b6f2ba9c1b96b11bd44c5b2e7
[INFO] running `Command { std: "docker" "start" "-a" "0a6c1b0de5b5032ec12e9424494352b1c75c510b6f2ba9c1b96b11bd44c5b2e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a6c1b0de5b5032ec12e9424494352b1c75c510b6f2ba9c1b96b11bd44c5b2e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a6c1b0de5b5032ec12e9424494352b1c75c510b6f2ba9c1b96b11bd44c5b2e7", kill_on_drop: false }`
[INFO] [stdout] 0a6c1b0de5b5032ec12e9424494352b1c75c510b6f2ba9c1b96b11bd44c5b2e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] f54bcb912b22f4b3af4f7a9b59c065608f76a4ad4463af4572b78f498f20610c
[INFO] running `Command { std: "docker" "start" "-a" "f54bcb912b22f4b3af4f7a9b59c065608f76a4ad4463af4572b78f498f20610c", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling bitflags v0.3.3
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling nom v1.2.4
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling text_io v0.1.9
[INFO] [stderr]    Compiling argparse v0.2.2
[INFO] [stderr]    Compiling nix v0.4.3
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling procinfo v0.3.1
[INFO] [stderr]    Compiling unshare v0.1.15
[INFO] [stderr]    Compiling nsutils v0.0.5
[INFO] [stderr]    Compiling nsenter v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.40s
[INFO] running `Command { std: "docker" "inspect" "f54bcb912b22f4b3af4f7a9b59c065608f76a4ad4463af4572b78f498f20610c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f54bcb912b22f4b3af4f7a9b59c065608f76a4ad4463af4572b78f498f20610c", kill_on_drop: false }`
[INFO] [stdout] f54bcb912b22f4b3af4f7a9b59c065608f76a4ad4463af4572b78f498f20610c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] 85e8895ba651c64a9a6f30fdb68669f7f7552e56afac1fa01f164db830b37532
[INFO] running `Command { std: "docker" "start" "-a" "85e8895ba651c64a9a6f30fdb68669f7f7552e56afac1fa01f164db830b37532", kill_on_drop: false }`
[INFO] [stderr]    Compiling nsenter v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "85e8895ba651c64a9a6f30fdb68669f7f7552e56afac1fa01f164db830b37532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85e8895ba651c64a9a6f30fdb68669f7f7552e56afac1fa01f164db830b37532", kill_on_drop: false }`
[INFO] [stdout] 85e8895ba651c64a9a6f30fdb68669f7f7552e56afac1fa01f164db830b37532
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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] ad308b78f33c70527d362f1149afb7b6faf259290ea37febe45fda08bed4766a
[INFO] running `Command { std: "docker" "start" "-a" "ad308b78f33c70527d362f1149afb7b6faf259290ea37febe45fda08bed4766a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nsenter-725eeaf38c9cff69)
[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" "ad308b78f33c70527d362f1149afb7b6faf259290ea37febe45fda08bed4766a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad308b78f33c70527d362f1149afb7b6faf259290ea37febe45fda08bed4766a", kill_on_drop: false }`
[INFO] [stdout] ad308b78f33c70527d362f1149afb7b6faf259290ea37febe45fda08bed4766a