[INFO] fetching crate from_iter 1.0.0...
[INFO] testing from_iter-1.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate from_iter 1.0.0 into /workspace/builds/worker-77/source
[INFO] validating manifest of crates.io crate from_iter 1.0.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate from_iter 1.0.0
[INFO] finished tweaking crates.io crate from_iter 1.0.0
[INFO] tweaked toml for crates.io crate from_iter 1.0.0 written to /workspace/builds/worker-77/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31218072da2797e5b25bc1a565501ef3d8daa6820c7c0984d21edf39b2c5c0f8
[INFO] running `Command { std: "docker" "start" "-a" "31218072da2797e5b25bc1a565501ef3d8daa6820c7c0984d21edf39b2c5c0f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31218072da2797e5b25bc1a565501ef3d8daa6820c7c0984d21edf39b2c5c0f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31218072da2797e5b25bc1a565501ef3d8daa6820c7c0984d21edf39b2c5c0f8", kill_on_drop: false }`
[INFO] [stdout] 31218072da2797e5b25bc1a565501ef3d8daa6820c7c0984d21edf39b2c5c0f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0d194a95d11a2c61c39bebb33458d0987a8f82d2dcd15aba37f3b759cad75bd
[INFO] running `Command { std: "docker" "start" "-a" "b0d194a95d11a2c61c39bebb33458d0987a8f82d2dcd15aba37f3b759cad75bd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling from_iter v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "b0d194a95d11a2c61c39bebb33458d0987a8f82d2dcd15aba37f3b759cad75bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0d194a95d11a2c61c39bebb33458d0987a8f82d2dcd15aba37f3b759cad75bd", kill_on_drop: false }`
[INFO] [stdout] b0d194a95d11a2c61c39bebb33458d0987a8f82d2dcd15aba37f3b759cad75bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c84e2b90fcddcdc496b57c698b8185760cd44d8a94dd34ba1d06261860ebfbbd
[INFO] running `Command { std: "docker" "start" "-a" "c84e2b90fcddcdc496b57c698b8185760cd44d8a94dd34ba1d06261860ebfbbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling from_iter v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "c84e2b90fcddcdc496b57c698b8185760cd44d8a94dd34ba1d06261860ebfbbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c84e2b90fcddcdc496b57c698b8185760cd44d8a94dd34ba1d06261860ebfbbd", kill_on_drop: false }`
[INFO] [stdout] c84e2b90fcddcdc496b57c698b8185760cd44d8a94dd34ba1d06261860ebfbbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 97888db60eca2590ffdf9a8bcb48a4c1c0fe78f5a14b9172fe1e850ca2a456ba
[INFO] running `Command { std: "docker" "start" "-a" "97888db60eca2590ffdf9a8bcb48a4c1c0fe78f5a14b9172fe1e850ca2a456ba", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.47s
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/from_iter-17bd16ad9b49cb7b)
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stderr]    Doc-tests from_iter
[INFO] [stdout] test tests::no_conflict ... ok
[INFO] [stdout] test tests::try_from_iter ... ok
[INFO] [stdout] test tests::try_from_iter_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - (line 21) ... ok
[INFO] [stdout] test src/lib.rs - FromIterator (line 47) ... ok
[INFO] [stdout] test src/lib.rs - (line 13) ... ok
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.28s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "97888db60eca2590ffdf9a8bcb48a4c1c0fe78f5a14b9172fe1e850ca2a456ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97888db60eca2590ffdf9a8bcb48a4c1c0fe78f5a14b9172fe1e850ca2a456ba", kill_on_drop: false }`
[INFO] [stdout] 97888db60eca2590ffdf9a8bcb48a4c1c0fe78f5a14b9172fe1e850ca2a456ba