[INFO] fetching crate persistent_stack 0.1.1...
[INFO] testing persistent_stack-0.1.1 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate persistent_stack 0.1.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate persistent_stack 0.1.1 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 persistent_stack 0.1.1
[INFO] finished tweaking crates.io crate persistent_stack 0.1.1
[INFO] tweaked toml for crates.io crate persistent_stack 0.1.1 written to /workspace/builds/worker-13/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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 50860d8e67c482ee4377f82501fa9c591e6a8b8c6835b303ced4cb33f1169ebc
[INFO] running `Command { std: "docker" "start" "-a" "50860d8e67c482ee4377f82501fa9c591e6a8b8c6835b303ced4cb33f1169ebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50860d8e67c482ee4377f82501fa9c591e6a8b8c6835b303ced4cb33f1169ebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50860d8e67c482ee4377f82501fa9c591e6a8b8c6835b303ced4cb33f1169ebc", kill_on_drop: false }`
[INFO] [stdout] 50860d8e67c482ee4377f82501fa9c591e6a8b8c6835b303ced4cb33f1169ebc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 8e9620bf238439d337ffa99892704cfee909f951cd49210c5d3eff933e5cd112
[INFO] running `Command { std: "docker" "start" "-a" "8e9620bf238439d337ffa99892704cfee909f951cd49210c5d3eff933e5cd112", kill_on_drop: false }`
[INFO] [stderr]    Compiling persistent_stack v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "8e9620bf238439d337ffa99892704cfee909f951cd49210c5d3eff933e5cd112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e9620bf238439d337ffa99892704cfee909f951cd49210c5d3eff933e5cd112", kill_on_drop: false }`
[INFO] [stdout] 8e9620bf238439d337ffa99892704cfee909f951cd49210c5d3eff933e5cd112
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] ef03f04914c821ec9d97473993b190c6572db345841db10532445d5d2b470f62
[INFO] running `Command { std: "docker" "start" "-a" "ef03f04914c821ec9d97473993b190c6572db345841db10532445d5d2b470f62", kill_on_drop: false }`
[INFO] [stderr]    Compiling persistent_stack v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "ef03f04914c821ec9d97473993b190c6572db345841db10532445d5d2b470f62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef03f04914c821ec9d97473993b190c6572db345841db10532445d5d2b470f62", kill_on_drop: false }`
[INFO] [stdout] ef03f04914c821ec9d97473993b190c6572db345841db10532445d5d2b470f62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] ba41704506d1cb188ae1ccd5071954b44f5248c37521594936984f9494e7c537
[INFO] running `Command { std: "docker" "start" "-a" "ba41704506d1cb188ae1ccd5071954b44f5248c37521594936984f9494e7c537", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/persistent_stack-5dd0ffc2ee509e85)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_persistent_stack ... ok
[INFO] [stdout] test tests::readme_example ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests persistent_stack
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - PersistentStack<T>::new (line 57) ... ok
[INFO] [stdout] test src/lib.rs - PersistentStack<T>::push (line 69) ... ok
[INFO] [stdout] test src/lib.rs - PersistentStack<T>::pop (line 95) ... ok
[INFO] [stdout] test src/lib.rs - PersistentStack<T>::iter (line 124) ... ok
[INFO] [stdout] test src/lib.rs - PersistentStack (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.09s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ba41704506d1cb188ae1ccd5071954b44f5248c37521594936984f9494e7c537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba41704506d1cb188ae1ccd5071954b44f5248c37521594936984f9494e7c537", kill_on_drop: false }`
[INFO] [stdout] ba41704506d1cb188ae1ccd5071954b44f5248c37521594936984f9494e7c537