[INFO] fetching crate error-iter 0.2.0...
[INFO] testing error-iter-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate error-iter 0.2.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate error-iter 0.2.0 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 error-iter 0.2.0
[INFO] finished tweaking crates.io crate error-iter 0.2.0
[INFO] tweaked toml for crates.io crate error-iter 0.2.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate error-iter 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror-impl v1.0.4
[INFO] [stderr]   Downloaded thiserror v1.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] e5684cf73f2b52c01126caac78069623e1e5928e8bfa9946e5a3e9e77c091503
[INFO] running `Command { std: "docker" "start" "-a" "e5684cf73f2b52c01126caac78069623e1e5928e8bfa9946e5a3e9e77c091503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5684cf73f2b52c01126caac78069623e1e5928e8bfa9946e5a3e9e77c091503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5684cf73f2b52c01126caac78069623e1e5928e8bfa9946e5a3e9e77c091503", kill_on_drop: false }`
[INFO] [stdout] e5684cf73f2b52c01126caac78069623e1e5928e8bfa9946e5a3e9e77c091503
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 11ba15f472d4ffd39c6fe45a55b745b8fdf2479b3fe101e078d7720a1379e5b1
[INFO] running `Command { std: "docker" "start" "-a" "11ba15f472d4ffd39c6fe45a55b745b8fdf2479b3fe101e078d7720a1379e5b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling error-iter v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "11ba15f472d4ffd39c6fe45a55b745b8fdf2479b3fe101e078d7720a1379e5b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11ba15f472d4ffd39c6fe45a55b745b8fdf2479b3fe101e078d7720a1379e5b1", kill_on_drop: false }`
[INFO] [stdout] 11ba15f472d4ffd39c6fe45a55b745b8fdf2479b3fe101e078d7720a1379e5b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 58f73531d001e1d4425ad76268183e422e420dd743269b85a25ad7c735803be7
[INFO] running `Command { std: "docker" "start" "-a" "58f73531d001e1d4425ad76268183e422e420dd743269b85a25ad7c735803be7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.4
[INFO] [stderr]    Compiling thiserror v1.0.4
[INFO] [stderr]    Compiling error-iter v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.39s
[INFO] running `Command { std: "docker" "inspect" "58f73531d001e1d4425ad76268183e422e420dd743269b85a25ad7c735803be7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58f73531d001e1d4425ad76268183e422e420dd743269b85a25ad7c735803be7", kill_on_drop: false }`
[INFO] [stdout] 58f73531d001e1d4425ad76268183e422e420dd743269b85a25ad7c735803be7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 61e8a8c1181f75831bf2f5ccd30e66b7447995a8c7812372a4d1819f03a225da
[INFO] running `Command { std: "docker" "start" "-a" "61e8a8c1181f75831bf2f5ccd30e66b7447995a8c7812372a4d1819f03a225da", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/error_iter-1e9accb4c45f5d94)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::iter_chain_ok ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests error-iter
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 3) ... ok
[INFO] [stdout] test src/lib.rs - ErrorIter::chain (line 58) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "61e8a8c1181f75831bf2f5ccd30e66b7447995a8c7812372a4d1819f03a225da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61e8a8c1181f75831bf2f5ccd30e66b7447995a8c7812372a4d1819f03a225da", kill_on_drop: false }`
[INFO] [stdout] 61e8a8c1181f75831bf2f5ccd30e66b7447995a8c7812372a4d1819f03a225da