[INFO] fetching crate perftacho 0.4.2...
[INFO] testing perftacho-0.4.2 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate perftacho 0.4.2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate perftacho 0.4.2
[INFO] finished tweaking crates.io crate perftacho 0.4.2
[INFO] tweaked toml for crates.io crate perftacho 0.4.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate perftacho 0.4.2 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate perftacho 0.4.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yaml-rust v0.4.3
[INFO] [stderr]   Downloaded linked-hash-map v0.5.2
[INFO] [stderr]   Downloaded aho-corasick v0.7.10
[INFO] [stderr]   Downloaded regex v1.3.4
[INFO] [stderr]   Downloaded regex-syntax v0.6.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 475c7473de6c527a80526e0f78162b5a8b899351631a4451ea17d36d8562324d
[INFO] running `Command { std: "docker" "start" "-a" "475c7473de6c527a80526e0f78162b5a8b899351631a4451ea17d36d8562324d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "475c7473de6c527a80526e0f78162b5a8b899351631a4451ea17d36d8562324d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "475c7473de6c527a80526e0f78162b5a8b899351631a4451ea17d36d8562324d", kill_on_drop: false }`
[INFO] [stdout] 475c7473de6c527a80526e0f78162b5a8b899351631a4451ea17d36d8562324d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cee25862f5d7c025ea81af3c7d1f30c3e2101edf37b3d897704ad466805ccdec
[INFO] running `Command { std: "docker" "start" "-a" "cee25862f5d7c025ea81af3c7d1f30c3e2101edf37b3d897704ad466805ccdec", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling regex-syntax v0.6.16
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling perftacho v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/process/mod.rs:72:25
[INFO] [stdout]    |
[INFO] [stdout] 72 |         Err(e) => Err(e.description().to_owned()),
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.84s
[INFO] running `Command { std: "docker" "inspect" "cee25862f5d7c025ea81af3c7d1f30c3e2101edf37b3d897704ad466805ccdec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cee25862f5d7c025ea81af3c7d1f30c3e2101edf37b3d897704ad466805ccdec", kill_on_drop: false }`
[INFO] [stdout] cee25862f5d7c025ea81af3c7d1f30c3e2101edf37b3d897704ad466805ccdec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f587b82eb570b7dc33f19ab6dc2f378f3f2728e9586f621b4e705a260638742
[INFO] running `Command { std: "docker" "start" "-a" "7f587b82eb570b7dc33f19ab6dc2f378f3f2728e9586f621b4e705a260638742", kill_on_drop: false }`
[INFO] [stderr]    Compiling perftacho v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/process/mod.rs:72:25
[INFO] [stdout]    |
[INFO] [stdout] 72 |         Err(e) => Err(e.description().to_owned()),
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "7f587b82eb570b7dc33f19ab6dc2f378f3f2728e9586f621b4e705a260638742", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f587b82eb570b7dc33f19ab6dc2f378f3f2728e9586f621b4e705a260638742", kill_on_drop: false }`
[INFO] [stdout] 7f587b82eb570b7dc33f19ab6dc2f378f3f2728e9586f621b4e705a260638742
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d857a62bb9571c5e692c1ad91a5bad3fb892dc1186ea559f119fc1e2be92d49f
[INFO] running `Command { std: "docker" "start" "-a" "d857a62bb9571c5e692c1ad91a5bad3fb892dc1186ea559f119fc1e2be92d49f", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/process/mod.rs:72:25
[INFO] [stderr]    |
[INFO] [stderr] 72 |         Err(e) => Err(e.description().to_owned()),
[INFO] [stderr]    |                         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `perftacho` (bin "perftacho" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/perftacho-9d1f5b4d0e12ff1b)
[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" "d857a62bb9571c5e692c1ad91a5bad3fb892dc1186ea559f119fc1e2be92d49f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d857a62bb9571c5e692c1ad91a5bad3fb892dc1186ea559f119fc1e2be92d49f", kill_on_drop: false }`
[INFO] [stdout] d857a62bb9571c5e692c1ad91a5bad3fb892dc1186ea559f119fc1e2be92d49f