[INFO] fetching crate is 0.6.0...
[INFO] testing is-0.6.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate is 0.6.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate is 0.6.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate is 0.6.0
[INFO] finished tweaking crates.io crate is 0.6.0
[INFO] tweaked toml for crates.io crate is 0.6.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01e02bee1bd55f11c8ae4a57a1c16a0857019322bdd0e20370ba4b62ffe1d898
[INFO] running `Command { std: "docker" "start" "-a" "01e02bee1bd55f11c8ae4a57a1c16a0857019322bdd0e20370ba4b62ffe1d898", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01e02bee1bd55f11c8ae4a57a1c16a0857019322bdd0e20370ba4b62ffe1d898", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01e02bee1bd55f11c8ae4a57a1c16a0857019322bdd0e20370ba4b62ffe1d898", kill_on_drop: false }`
[INFO] [stdout] 01e02bee1bd55f11c8ae4a57a1c16a0857019322bdd0e20370ba4b62ffe1d898
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4c1d919504a7caa59d6f065eb6f87c06d3917036c802fac8f946d5ed4b2993e
[INFO] running `Command { std: "docker" "start" "-a" "f4c1d919504a7caa59d6f065eb6f87c06d3917036c802fac8f946d5ed4b2993e", kill_on_drop: false }`
[INFO] [stderr]    Compiling is v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "f4c1d919504a7caa59d6f065eb6f87c06d3917036c802fac8f946d5ed4b2993e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4c1d919504a7caa59d6f065eb6f87c06d3917036c802fac8f946d5ed4b2993e", kill_on_drop: false }`
[INFO] [stdout] f4c1d919504a7caa59d6f065eb6f87c06d3917036c802fac8f946d5ed4b2993e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e05b7a067e6af51618ed12cf726b043fd67e75cdb75995baf694b271701cc1fc
[INFO] running `Command { std: "docker" "start" "-a" "e05b7a067e6af51618ed12cf726b043fd67e75cdb75995baf694b271701cc1fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling is v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "e05b7a067e6af51618ed12cf726b043fd67e75cdb75995baf694b271701cc1fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e05b7a067e6af51618ed12cf726b043fd67e75cdb75995baf694b271701cc1fc", kill_on_drop: false }`
[INFO] [stdout] e05b7a067e6af51618ed12cf726b043fd67e75cdb75995baf694b271701cc1fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6dd46f58e8d74243c7a4c1acbaf4fde37a0a6c83ef4f6d0d54a3a63d8835018d
[INFO] running `Command { std: "docker" "start" "-a" "6dd46f58e8d74243c7a4c1acbaf4fde37a0a6c83ef4f6d0d54a3a63d8835018d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/is-f5bf81069138e049)
[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] [stderr]    Doc-tests is
[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" "6dd46f58e8d74243c7a4c1acbaf4fde37a0a6c83ef4f6d0d54a3a63d8835018d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dd46f58e8d74243c7a4c1acbaf4fde37a0a6c83ef4f6d0d54a3a63d8835018d", kill_on_drop: false }`
[INFO] [stdout] 6dd46f58e8d74243c7a4c1acbaf4fde37a0a6c83ef4f6d0d54a3a63d8835018d