[INFO] fetching crate standback 0.3.5...
[INFO] testing standback-0.3.5 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate standback 0.3.5 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate standback 0.3.5 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate standback 0.3.5
[INFO] finished tweaking crates.io crate standback 0.3.5
[INFO] tweaked toml for crates.io crate standback 0.3.5 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded easy-ext v0.2.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8178d0d8f9953b73246cfb3547bae06ba0796f2a9a963754a17575757d957097
[INFO] running `Command { std: "docker" "start" "-a" "8178d0d8f9953b73246cfb3547bae06ba0796f2a9a963754a17575757d957097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8178d0d8f9953b73246cfb3547bae06ba0796f2a9a963754a17575757d957097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8178d0d8f9953b73246cfb3547bae06ba0796f2a9a963754a17575757d957097", kill_on_drop: false }`
[INFO] [stdout] 8178d0d8f9953b73246cfb3547bae06ba0796f2a9a963754a17575757d957097
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59b07e8d0bb96e1f732f91b998378ccb7eecd73a40586b1e67a462dcd4e09209
[INFO] running `Command { std: "docker" "start" "-a" "59b07e8d0bb96e1f732f91b998378ccb7eecd73a40586b1e67a462dcd4e09209", kill_on_drop: false }`
[INFO] [stderr]    Compiling easy-ext v0.2.9
[INFO] [stderr]    Compiling standback v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "59b07e8d0bb96e1f732f91b998378ccb7eecd73a40586b1e67a462dcd4e09209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59b07e8d0bb96e1f732f91b998378ccb7eecd73a40586b1e67a462dcd4e09209", kill_on_drop: false }`
[INFO] [stdout] 59b07e8d0bb96e1f732f91b998378ccb7eecd73a40586b1e67a462dcd4e09209
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53ac64e6d34340f01fe61f63fe441fb1255daf99d4602e9291b10ef09b46a139
[INFO] running `Command { std: "docker" "start" "-a" "53ac64e6d34340f01fe61f63fe441fb1255daf99d4602e9291b10ef09b46a139", kill_on_drop: false }`
[INFO] [stderr]    Compiling standback v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "53ac64e6d34340f01fe61f63fe441fb1255daf99d4602e9291b10ef09b46a139", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53ac64e6d34340f01fe61f63fe441fb1255daf99d4602e9291b10ef09b46a139", kill_on_drop: false }`
[INFO] [stdout] 53ac64e6d34340f01fe61f63fe441fb1255daf99d4602e9291b10ef09b46a139
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c578f7da6dcf946c3482e769e3d7253392952467d0de076d73863a7e85a90b9d
[INFO] running `Command { std: "docker" "start" "-a" "c578f7da6dcf946c3482e769e3d7253392952467d0de076d73863a7e85a90b9d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/standback-b8131fe1f7b95b57)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests standback
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 17) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 24) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c578f7da6dcf946c3482e769e3d7253392952467d0de076d73863a7e85a90b9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c578f7da6dcf946c3482e769e3d7253392952467d0de076d73863a7e85a90b9d", kill_on_drop: false }`
[INFO] [stdout] c578f7da6dcf946c3482e769e3d7253392952467d0de076d73863a7e85a90b9d