[INFO] fetching crate ptail 0.2.2...
[INFO] testing ptail-0.2.2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate ptail 0.2.2 into /workspace/builds/worker-84/source
[INFO] validating manifest of crates.io crate ptail 0.2.2 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ptail 0.2.2
[INFO] finished tweaking crates.io crate ptail 0.2.2
[INFO] tweaked toml for crates.io crate ptail 0.2.2 written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] crate crates.io crate ptail 0.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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 shared_child v0.3.4
[INFO] [stderr]   Downloaded termios v0.3.1
[INFO] [stderr]   Downloaded once_cell v1.2.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.12
[INFO] [stderr]   Downloaded regex v1.3.1
[INFO] [stderr]   Downloaded structopt v0.3.4
[INFO] [stderr]   Downloaded unicode-width v0.1.6
[INFO] [stderr]   Downloaded proc-macro-error v0.2.6
[INFO] [stderr]   Downloaded os_pipe v0.9.1
[INFO] [stderr]   Downloaded console v0.9.1
[INFO] [stderr]   Downloaded cc v1.0.47
[INFO] [stderr]   Downloaded synstructure v0.12.2
[INFO] [stderr]   Downloaded duct v0.13.3
[INFO] [stderr]   Downloaded structopt-derive v0.3.4
[INFO] [stderr]   Downloaded libc v0.2.65
[INFO] [stderr]   Downloaded syn v1.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af3ab10da6472a6845555f799001d4eb6c2c7d8dfbd70d0cadf2dc7249dcd829
[INFO] running `Command { std: "docker" "start" "-a" "af3ab10da6472a6845555f799001d4eb6c2c7d8dfbd70d0cadf2dc7249dcd829", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af3ab10da6472a6845555f799001d4eb6c2c7d8dfbd70d0cadf2dc7249dcd829", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af3ab10da6472a6845555f799001d4eb6c2c7d8dfbd70d0cadf2dc7249dcd829", kill_on_drop: false }`
[INFO] [stdout] af3ab10da6472a6845555f799001d4eb6c2c7d8dfbd70d0cadf2dc7249dcd829
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad79135c53a3906e9c4895701d8d009a7aaec2ed0682f0ce13c453db312e3494
[INFO] running `Command { std: "docker" "start" "-a" "ad79135c53a3906e9c4895701d8d009a7aaec2ed0682f0ce13c453db312e3494", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling once_cell v1.2.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling shared_child v0.3.4
[INFO] [stderr]    Compiling termios v0.3.1
[INFO] [stderr]    Compiling clicolors-control v1.0.1
[INFO] [stderr]    Compiling os_pipe v0.9.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling duct v0.13.3
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling console v0.9.1
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling synstructure v0.12.2
[INFO] [stderr]    Compiling structopt-derive v0.3.4
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling structopt v0.3.4
[INFO] [stderr]    Compiling ptail v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.30s
[INFO] running `Command { std: "docker" "inspect" "ad79135c53a3906e9c4895701d8d009a7aaec2ed0682f0ce13c453db312e3494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad79135c53a3906e9c4895701d8d009a7aaec2ed0682f0ce13c453db312e3494", kill_on_drop: false }`
[INFO] [stdout] ad79135c53a3906e9c4895701d8d009a7aaec2ed0682f0ce13c453db312e3494
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 108ccf283c691205c06ee180d8be351a250c9c1e43f79a9803405e7893a38b18
[INFO] running `Command { std: "docker" "start" "-a" "108ccf283c691205c06ee180d8be351a250c9c1e43f79a9803405e7893a38b18", kill_on_drop: false }`
[INFO] [stderr]    Compiling ptail v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "108ccf283c691205c06ee180d8be351a250c9c1e43f79a9803405e7893a38b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "108ccf283c691205c06ee180d8be351a250c9c1e43f79a9803405e7893a38b18", kill_on_drop: false }`
[INFO] [stdout] 108ccf283c691205c06ee180d8be351a250c9c1e43f79a9803405e7893a38b18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d9293fb314b82b5899f96f0fc8d48ddbb7e46bafa1689d667f5f96b9992fe59e
[INFO] running `Command { std: "docker" "start" "-a" "d9293fb314b82b5899f96f0fc8d48ddbb7e46bafa1689d667f5f96b9992fe59e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ptail-2a6898c89cc6fd80)
[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" "d9293fb314b82b5899f96f0fc8d48ddbb7e46bafa1689d667f5f96b9992fe59e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9293fb314b82b5899f96f0fc8d48ddbb7e46bafa1689d667f5f96b9992fe59e", kill_on_drop: false }`
[INFO] [stdout] d9293fb314b82b5899f96f0fc8d48ddbb7e46bafa1689d667f5f96b9992fe59e