[INFO] fetching crate topgrade 7.1.0...
[INFO] testing topgrade-7.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate topgrade 7.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate topgrade 7.1.0 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 topgrade 7.1.0
[INFO] finished tweaking crates.io crate topgrade 7.1.0
[INFO] tweaked toml for crates.io crate topgrade 7.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate topgrade 7.1.0 already has a lockfile, it will not be regenerated
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tar v0.4.35
[INFO] [stderr]   Downloaded parselnk v0.1.0
[INFO] [stderr]   Downloaded tokio v1.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] dbc2d12e2d95111a82ffb10b8787fcdc3da7f1dd3a39caf6018ecc541b047172
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dbc2d12e2d95111a82ffb10b8787fcdc3da7f1dd3a39caf6018ecc541b047172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbc2d12e2d95111a82ffb10b8787fcdc3da7f1dd3a39caf6018ecc541b047172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbc2d12e2d95111a82ffb10b8787fcdc3da7f1dd3a39caf6018ecc541b047172", kill_on_drop: false }`
[INFO] [stdout] dbc2d12e2d95111a82ffb10b8787fcdc3da7f1dd3a39caf6018ecc541b047172
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] eb9d85f5b2a3053f14222c4fa714c963ee67bed9bee83c54cd3a5e979b9cbc3a
[INFO] running `Command { std: "docker" "start" "-a" "eb9d85f5b2a3053f14222c4fa714c963ee67bed9bee83c54cd3a5e979b9cbc3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling futures-sink v0.3.15
[INFO] [stderr]    Compiling futures-io v0.3.15
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]    Compiling topgrade v7.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio v1.8.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling which v4.1.0
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling console v0.14.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling directories v3.0.2
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling shellexpand v2.1.0
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling dlv-list v0.2.3
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling ordered-multimap v0.3.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling rust-ini v0.17.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling strum v0.20.0
[INFO] [stderr]    Compiling structopt v0.3.22
[INFO] [stderr]    Compiling futures-executor v0.3.15
[INFO] [stderr]    Compiling futures v0.3.15
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.52s
[INFO] running `Command { std: "docker" "inspect" "eb9d85f5b2a3053f14222c4fa714c963ee67bed9bee83c54cd3a5e979b9cbc3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb9d85f5b2a3053f14222c4fa714c963ee67bed9bee83c54cd3a5e979b9cbc3a", kill_on_drop: false }`
[INFO] [stdout] eb9d85f5b2a3053f14222c4fa714c963ee67bed9bee83c54cd3a5e979b9cbc3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5ffe22b7a940d5b8070e64bcb8f0555b4ac43a839dcf3154ac8cdbe8e118e585
[INFO] running `Command { std: "docker" "start" "-a" "5ffe22b7a940d5b8070e64bcb8f0555b4ac43a839dcf3154ac8cdbe8e118e585", kill_on_drop: false }`
[INFO] [stderr]    Compiling topgrade v7.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.08s
[INFO] running `Command { std: "docker" "inspect" "5ffe22b7a940d5b8070e64bcb8f0555b4ac43a839dcf3154ac8cdbe8e118e585", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ffe22b7a940d5b8070e64bcb8f0555b4ac43a839dcf3154ac8cdbe8e118e585", kill_on_drop: false }`
[INFO] [stdout] 5ffe22b7a940d5b8070e64bcb8f0555b4ac43a839dcf3154ac8cdbe8e118e585
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] ffba5f6beb03c14df5a3f1b1bb819c2a9ff087a03f0e4dc4dd6d34d0a430797d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ffba5f6beb03c14df5a3f1b1bb819c2a9ff087a03f0e4dc4dd6d34d0a430797d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/topgrade-6a6cfbcd5c8b5d3b)
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test steps::os::linux::tests::test_anarchy ... ok
[INFO] [stdout] test steps::os::linux::tests::test_amazon_linux ... ok
[INFO] [stdout] test steps::os::linux::tests::test_antergos ... ok
[INFO] [stdout] test steps::os::linux::tests::test_debian ... ok
[INFO] [stdout] test steps::os::linux::tests::test_centos ... ok
[INFO] [stdout] test steps::os::linux::tests::test_exherbo ... ok
[INFO] [stdout] test steps::os::linux::tests::test_clearlinux ... ok
[INFO] [stdout] test steps::os::linux::tests::test_gentoo ... ok
[INFO] [stdout] test steps::os::linux::tests::test_arch_linux ... ok
[INFO] [stdout] test steps::os::linux::tests::test_pengwinonwsl ... ok
[INFO] [stdout] test steps::os::linux::tests::test_artix ... ok
[INFO] [stdout] test steps::os::linux::tests::test_nixos ... ok
[INFO] [stdout] test steps::os::linux::tests::test_fedora ... ok
[INFO] [stdout] test steps::os::linux::tests::test_manjaro ... ok
[INFO] [stdout] test steps::os::linux::tests::test_ubuntu ... ok
[INFO] [stdout] test steps::os::linux::tests::test_manjaro_arm ... ok
[INFO] [stdout] test steps::os::linux::tests::test_oraclelinux ... ok
[INFO] [stdout] test steps::os::linux::tests::test_rhel ... ok
[INFO] [stdout] test steps::os::linux::tests::test_opensuse ... ok
[INFO] [stdout] test steps::os::linux::tests::test_mint ... ok
[INFO] [stdout] test steps::os::linux::tests::test_garuda ... ok
[INFO] [stdout] test steps::os::linux::tests::test_fedoraremixonwsl ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ffba5f6beb03c14df5a3f1b1bb819c2a9ff087a03f0e4dc4dd6d34d0a430797d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffba5f6beb03c14df5a3f1b1bb819c2a9ff087a03f0e4dc4dd6d34d0a430797d", kill_on_drop: false }`
[INFO] [stdout] ffba5f6beb03c14df5a3f1b1bb819c2a9ff087a03f0e4dc4dd6d34d0a430797d