[INFO] fetching crate iter_columns 0.3.0...
[INFO] testing iter_columns-0.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate iter_columns 0.3.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate iter_columns 0.3.0 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 iter_columns 0.3.0
[INFO] finished tweaking crates.io crate iter_columns 0.3.0
[INFO] tweaked toml for crates.io crate iter_columns 0.3.0 written to /workspace/builds/worker-0/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a2de7168da0f8487d38b2ce9db4b729aaf17d1accaa675febd97a62f01c0b5f1
[INFO] running `Command { std: "docker" "start" "-a" "a2de7168da0f8487d38b2ce9db4b729aaf17d1accaa675febd97a62f01c0b5f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2de7168da0f8487d38b2ce9db4b729aaf17d1accaa675febd97a62f01c0b5f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2de7168da0f8487d38b2ce9db4b729aaf17d1accaa675febd97a62f01c0b5f1", kill_on_drop: false }`
[INFO] [stdout] a2de7168da0f8487d38b2ce9db4b729aaf17d1accaa675febd97a62f01c0b5f1
[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=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] 490e844ccc6554417cd2956e64a0563661debefa513ee7cfd96d94768eca43fa
[INFO] running `Command { std: "docker" "start" "-a" "490e844ccc6554417cd2956e64a0563661debefa513ee7cfd96d94768eca43fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter_columns v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "490e844ccc6554417cd2956e64a0563661debefa513ee7cfd96d94768eca43fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "490e844ccc6554417cd2956e64a0563661debefa513ee7cfd96d94768eca43fa", kill_on_drop: false }`
[INFO] [stdout] 490e844ccc6554417cd2956e64a0563661debefa513ee7cfd96d94768eca43fa
[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=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] 86106a7645f806968b4ccd994bbf3daf31898c1c9fbc591a8c26dd308a56064c
[INFO] running `Command { std: "docker" "start" "-a" "86106a7645f806968b4ccd994bbf3daf31898c1c9fbc591a8c26dd308a56064c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling iter_columns v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "86106a7645f806968b4ccd994bbf3daf31898c1c9fbc591a8c26dd308a56064c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86106a7645f806968b4ccd994bbf3daf31898c1c9fbc591a8c26dd308a56064c", kill_on_drop: false }`
[INFO] [stdout] 86106a7645f806968b4ccd994bbf3daf31898c1c9fbc591a8c26dd308a56064c
[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=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] 147ef5f4df7f5095550e6166c6fa0f8a410699827f2216ca096d9288019812fd
[INFO] running `Command { std: "docker" "start" "-a" "147ef5f4df7f5095550e6166c6fa0f8a410699827f2216ca096d9288019812fd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/iter_columns-bde5cd1098c0da6c)
[INFO] [stdout] 
[INFO] [stdout] running 46 tests
[INFO] [stdout] test tests::test_array_borrowed_1 ... ok
[INFO] [stdout] test tests::test_array_borrowed_2 ... ok
[INFO] [stdout] test tests::test_array_borrowed_backwards ... ok
[INFO] [stdout] test tests::test_array_borrowed_3 ... ok
[INFO] [stdout] test tests::test_array_mut_borrowed_1 ... ok
[INFO] [stdout] test tests::test_array_mut_borrowed_2 ... ok
[INFO] [stdout] test tests::test_array_mut_borrowed_3 ... ok
[INFO] [stdout] test tests::test_array_mut_borrowed_backwards ... ok
[INFO] [stdout] test tests::test_into_array_old ... ok
[INFO] [stdout] test tests::test_into_vec ... ok
[INFO] [stdout] test tests::test_into_vec_backwards ... ok
[INFO] [stdout] test tests::test_into_vec_options ... ok
[INFO] [stderr]    Doc-tests iter_columns
[INFO] [stdout] test tests::test_into_vec_options_backwards ... ok
[INFO] [stdout] test tests::test_into_array_old_backwards ... ok
[INFO] [stdout] test tests::test_slice_borrowed_2 ... ok
[INFO] [stdout] test tests::test_slice_borrowed_1 ... ok
[INFO] [stdout] test tests::test_slice_borrowed_3 ... ok
[INFO] [stdout] test tests::test_slice_borrowed_backwards ... ok
[INFO] [stdout] test tests::test_slice_borrowed_options_1 ... ok
[INFO] [stdout] test tests::test_slice_borrowed_options_3 ... ok
[INFO] [stdout] test tests::test_slice_borrowed_options_2 ... ok
[INFO] [stdout] test tests::test_slice_borrowed_options_backwards ... ok
[INFO] [stdout] test tests::test_slice_mut_borrowed_1 ... ok
[INFO] [stdout] test tests::test_slice_mut_borrowed_2 ... ok
[INFO] [stdout] test tests::test_slice_mut_borrowed_3 ... ok
[INFO] [stdout] test tests::test_slice_mut_borrowed_options_1 ... ok
[INFO] [stdout] test tests::test_slice_mut_borrowed_backwards ... ok
[INFO] [stdout] test tests::test_slice_mut_borrowed_options_2 ... ok
[INFO] [stdout] test tests::test_slice_mut_borrowed_options_3 ... ok
[INFO] [stdout] test tests::test_slice_mut_borrowed_options_backwards ... ok
[INFO] [stdout] test tests::test_vec_borrowed_1 ... ok
[INFO] [stdout] test tests::test_vec_borrowed_2 ... ok
[INFO] [stdout] test tests::test_vec_borrowed_backwards ... ok
[INFO] [stdout] test tests::test_vec_borrowed_3 ... ok
[INFO] [stdout] test tests::test_vec_borrowed_options_2 ... ok
[INFO] [stdout] test tests::test_vec_borrowed_options_1 ... ok
[INFO] [stdout] test tests::test_vec_borrowed_options_backwards ... ok
[INFO] [stdout] test tests::test_vec_borrowed_options_3 ... ok
[INFO] [stdout] test tests::test_vec_mut_borrowed_1 ... ok
[INFO] [stdout] test tests::test_vec_mut_borrowed_2 ... ok
[INFO] [stdout] test tests::test_vec_mut_borrowed_backwards ... ok
[INFO] [stdout] test tests::test_vec_mut_borrowed_3 ... ok
[INFO] [stdout] test tests::test_vec_mut_borrowed_options_2 ... ok
[INFO] [stdout] test tests::test_vec_mut_borrowed_options_1 ... ok
[INFO] [stdout] test tests::test_vec_mut_borrowed_options_3 ... ok
[INFO] [stdout] test tests::test_vec_mut_borrowed_options_backwards ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 46 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/iter.rs - iter::ColumnsTrait::columns (line 381) ... ok
[INFO] [stdout] test src/iter.rs - iter::ColumnsTrait::columns_options (line 418) ... ok
[INFO] [stdout] test src/iter.rs - iter::ColumnsMutTrait::columns_options (line 494) ... ok
[INFO] [stdout] test src/iter.rs - iter::ColumnsMutTrait::columns (line 457) ... ok
[INFO] [stdout] test src/iter.rs - iter::ColumnsIntoIterVecTrait::columns (line 101) ... ok
[INFO] [stdout] test src/iter.rs - iter::ColumnsIntoIterVecTrait::columns_options (line 133) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.49s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "147ef5f4df7f5095550e6166c6fa0f8a410699827f2216ca096d9288019812fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "147ef5f4df7f5095550e6166c6fa0f8a410699827f2216ca096d9288019812fd", kill_on_drop: false }`
[INFO] [stdout] 147ef5f4df7f5095550e6166c6fa0f8a410699827f2216ca096d9288019812fd