[INFO] fetching crate treesize 0.5.0...
[INFO] testing treesize-0.5.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate treesize 0.5.0 into /workspace/builds/worker-48/source
[INFO] validating manifest of crates.io crate treesize 0.5.0 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 treesize 0.5.0
[INFO] finished tweaking crates.io crate treesize 0.5.0
[INFO] tweaked toml for crates.io crate treesize 0.5.0 written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] crate crates.io crate treesize 0.5.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tabwriter v1.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] e07ce94c391f71070e07468204bf501d77ee99fa1fb246e400083b88633fbd7f
[INFO] running `Command { std: "docker" "start" "-a" "e07ce94c391f71070e07468204bf501d77ee99fa1fb246e400083b88633fbd7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e07ce94c391f71070e07468204bf501d77ee99fa1fb246e400083b88633fbd7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e07ce94c391f71070e07468204bf501d77ee99fa1fb246e400083b88633fbd7f", kill_on_drop: false }`
[INFO] [stdout] e07ce94c391f71070e07468204bf501d77ee99fa1fb246e400083b88633fbd7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 3f5a6583fbb1bc0887f4a386e211df9d2697181d22903e4774512dc73979a7a6
[INFO] running `Command { std: "docker" "start" "-a" "3f5a6583fbb1bc0887f4a386e211df9d2697181d22903e4774512dc73979a7a6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling tabwriter v1.1.0
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling treesize v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.73s
[INFO] running `Command { std: "docker" "inspect" "3f5a6583fbb1bc0887f4a386e211df9d2697181d22903e4774512dc73979a7a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f5a6583fbb1bc0887f4a386e211df9d2697181d22903e4774512dc73979a7a6", kill_on_drop: false }`
[INFO] [stdout] 3f5a6583fbb1bc0887f4a386e211df9d2697181d22903e4774512dc73979a7a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 42d7ec946dac9bdbd93c3f065a951a8dbcbfc8609a220abc63304cb75fc8df9d
[INFO] running `Command { std: "docker" "start" "-a" "42d7ec946dac9bdbd93c3f065a951a8dbcbfc8609a220abc63304cb75fc8df9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling treesize v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "42d7ec946dac9bdbd93c3f065a951a8dbcbfc8609a220abc63304cb75fc8df9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42d7ec946dac9bdbd93c3f065a951a8dbcbfc8609a220abc63304cb75fc8df9d", kill_on_drop: false }`
[INFO] [stdout] 42d7ec946dac9bdbd93c3f065a951a8dbcbfc8609a220abc63304cb75fc8df9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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] 526ebebb847bc5933a172fc7c6cdc36b236ab2fffcf4e26acb6320b2a5f6377f
[INFO] running `Command { std: "docker" "start" "-a" "526ebebb847bc5933a172fc7c6cdc36b236ab2fffcf4e26acb6320b2a5f6377f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/treesize-4e4c1c9e41cc2bab)
[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" "526ebebb847bc5933a172fc7c6cdc36b236ab2fffcf4e26acb6320b2a5f6377f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "526ebebb847bc5933a172fc7c6cdc36b236ab2fffcf4e26acb6320b2a5f6377f", kill_on_drop: false }`
[INFO] [stdout] 526ebebb847bc5933a172fc7c6cdc36b236ab2fffcf4e26acb6320b2a5f6377f