[INFO] fetching crate matryoshka 0.1.0...
[INFO] testing matryoshka-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate matryoshka 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate matryoshka 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate matryoshka 0.1.0
[INFO] finished tweaking crates.io crate matryoshka 0.1.0
[INFO] tweaked toml for crates.io crate matryoshka 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 32bc8e2cff0e8146f9f12b3398aeb35c18a63d72b6e612434bdbd757759fcf90
[INFO] running `Command { std: "docker" "start" "-a" "32bc8e2cff0e8146f9f12b3398aeb35c18a63d72b6e612434bdbd757759fcf90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32bc8e2cff0e8146f9f12b3398aeb35c18a63d72b6e612434bdbd757759fcf90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32bc8e2cff0e8146f9f12b3398aeb35c18a63d72b6e612434bdbd757759fcf90", kill_on_drop: false }`
[INFO] [stdout] 32bc8e2cff0e8146f9f12b3398aeb35c18a63d72b6e612434bdbd757759fcf90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5741e3d085d3b1418b3ef78b0fc61e3599037050f2a140020361e7d36bd0a4fc
[INFO] running `Command { std: "docker" "start" "-a" "5741e3d085d3b1418b3ef78b0fc61e3599037050f2a140020361e7d36bd0a4fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling flate2 v1.0.23
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling bzip2 v0.4.3
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling zip v0.5.13
[INFO] [stderr]    Compiling matryoshka v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.55s
[INFO] running `Command { std: "docker" "inspect" "5741e3d085d3b1418b3ef78b0fc61e3599037050f2a140020361e7d36bd0a4fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5741e3d085d3b1418b3ef78b0fc61e3599037050f2a140020361e7d36bd0a4fc", kill_on_drop: false }`
[INFO] [stdout] 5741e3d085d3b1418b3ef78b0fc61e3599037050f2a140020361e7d36bd0a4fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2c3823415417c8e441f8b3f7e806479795eef3df80a664e62e85adcc753dc24d
[INFO] running `Command { std: "docker" "start" "-a" "2c3823415417c8e441f8b3f7e806479795eef3df80a664e62e85adcc753dc24d", kill_on_drop: false }`
[INFO] [stderr]    Compiling matryoshka v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "2c3823415417c8e441f8b3f7e806479795eef3df80a664e62e85adcc753dc24d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c3823415417c8e441f8b3f7e806479795eef3df80a664e62e85adcc753dc24d", kill_on_drop: false }`
[INFO] [stdout] 2c3823415417c8e441f8b3f7e806479795eef3df80a664e62e85adcc753dc24d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8fac61b5c2bbbac161b8782d051d4ad5a262f99b69e533200621df1a40246a43
[INFO] running `Command { std: "docker" "start" "-a" "8fac61b5c2bbbac161b8782d051d4ad5a262f99b69e533200621df1a40246a43", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/matryoshka-d41a805c6a6235d6)
[INFO] [stderr]    Doc-tests matryoshka
[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] [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" "8fac61b5c2bbbac161b8782d051d4ad5a262f99b69e533200621df1a40246a43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fac61b5c2bbbac161b8782d051d4ad5a262f99b69e533200621df1a40246a43", kill_on_drop: false }`
[INFO] [stdout] 8fac61b5c2bbbac161b8782d051d4ad5a262f99b69e533200621df1a40246a43