[INFO] fetching crate error-iter 0.2.0...
[INFO] testing error-iter-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate error-iter 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate error-iter 0.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-1/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" "+beta-2021-09-08" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 988f5e5c350133d616d5a045c74b4de48b4b5bec2363768ea0c7605d27fe87f5
[INFO] running `Command { std: "docker" "start" "-a" "988f5e5c350133d616d5a045c74b4de48b4b5bec2363768ea0c7605d27fe87f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "988f5e5c350133d616d5a045c74b4de48b4b5bec2363768ea0c7605d27fe87f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "988f5e5c350133d616d5a045c74b4de48b4b5bec2363768ea0c7605d27fe87f5", kill_on_drop: false }`
[INFO] [stdout] 988f5e5c350133d616d5a045c74b4de48b4b5bec2363768ea0c7605d27fe87f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c564e0c53bbd23a3b854a0e6b2081a46fa87519776e75ca42335758a3a32f31d
[INFO] running `Command { std: "docker" "start" "-a" "c564e0c53bbd23a3b854a0e6b2081a46fa87519776e75ca42335758a3a32f31d", kill_on_drop: false }`
[INFO] [stderr]    Compiling error-iter v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "c564e0c53bbd23a3b854a0e6b2081a46fa87519776e75ca42335758a3a32f31d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c564e0c53bbd23a3b854a0e6b2081a46fa87519776e75ca42335758a3a32f31d", kill_on_drop: false }`
[INFO] [stdout] c564e0c53bbd23a3b854a0e6b2081a46fa87519776e75ca42335758a3a32f31d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40791dc847d49ce86e75f2fe3d9878f52963b1bccb4d77f68919956a513155ef
[INFO] running `Command { std: "docker" "start" "-a" "40791dc847d49ce86e75f2fe3d9878f52963b1bccb4d77f68919956a513155ef", 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 6.43s
[INFO] running `Command { std: "docker" "inspect" "40791dc847d49ce86e75f2fe3d9878f52963b1bccb4d77f68919956a513155ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40791dc847d49ce86e75f2fe3d9878f52963b1bccb4d77f68919956a513155ef", kill_on_drop: false }`
[INFO] [stdout] 40791dc847d49ce86e75f2fe3d9878f52963b1bccb4d77f68919956a513155ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 416ef5b58066f48bf13c6e5aaa108c58a77763e6726bd18e896f3c35008fe07f
[INFO] running `Command { std: "docker" "start" "-a" "416ef5b58066f48bf13c6e5aaa108c58a77763e6726bd18e896f3c35008fe07f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/error_iter-5772fdb802897019)
[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" "416ef5b58066f48bf13c6e5aaa108c58a77763e6726bd18e896f3c35008fe07f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "416ef5b58066f48bf13c6e5aaa108c58a77763e6726bd18e896f3c35008fe07f", kill_on_drop: false }`
[INFO] [stdout] 416ef5b58066f48bf13c6e5aaa108c58a77763e6726bd18e896f3c35008fe07f