[INFO] fetching crate prefix_writer 0.1.1...
[INFO] testing prefix_writer-0.1.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate prefix_writer 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate prefix_writer 0.1.1
[INFO] finished tweaking crates.io crate prefix_writer 0.1.1
[INFO] tweaked toml for crates.io crate prefix_writer 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate prefix_writer 0.1.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 561eb4e79a33fc102a0c0f2e0e874d0a6dfd59baa6ca8fbe61fb709cec8b1bbc
[INFO] running `Command { std: "docker" "start" "-a" "561eb4e79a33fc102a0c0f2e0e874d0a6dfd59baa6ca8fbe61fb709cec8b1bbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "561eb4e79a33fc102a0c0f2e0e874d0a6dfd59baa6ca8fbe61fb709cec8b1bbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "561eb4e79a33fc102a0c0f2e0e874d0a6dfd59baa6ca8fbe61fb709cec8b1bbc", kill_on_drop: false }`
[INFO] [stdout] 561eb4e79a33fc102a0c0f2e0e874d0a6dfd59baa6ca8fbe61fb709cec8b1bbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2074f34fde41bb1f8249d773e2b3fa5834ff76aee5182d4c551fbc484275e5c3
[INFO] running `Command { std: "docker" "start" "-a" "2074f34fde41bb1f8249d773e2b3fa5834ff76aee5182d4c551fbc484275e5c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling prefix_writer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "2074f34fde41bb1f8249d773e2b3fa5834ff76aee5182d4c551fbc484275e5c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2074f34fde41bb1f8249d773e2b3fa5834ff76aee5182d4c551fbc484275e5c3", kill_on_drop: false }`
[INFO] [stdout] 2074f34fde41bb1f8249d773e2b3fa5834ff76aee5182d4c551fbc484275e5c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 111b96e94d85d43dfb9fbc57a525a9011c1b30b9602d7120961df805c443697c
[INFO] running `Command { std: "docker" "start" "-a" "111b96e94d85d43dfb9fbc57a525a9011c1b30b9602d7120961df805c443697c", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling pretty_assertions v1.4.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling const_format v0.2.35
[INFO] [stderr]    Compiling prefix_writer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.73s
[INFO] running `Command { std: "docker" "inspect" "111b96e94d85d43dfb9fbc57a525a9011c1b30b9602d7120961df805c443697c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "111b96e94d85d43dfb9fbc57a525a9011c1b30b9602d7120961df805c443697c", kill_on_drop: false }`
[INFO] [stdout] 111b96e94d85d43dfb9fbc57a525a9011c1b30b9602d7120961df805c443697c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 316f8ff714dbdfe21bfe332581a83f0e23992059f068f89fa6954f0e2ffde924
[INFO] running `Command { std: "docker" "start" "-a" "316f8ff714dbdfe21bfe332581a83f0e23992059f068f89fa6954f0e2ffde924", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/prefix_writer-e25c5c753e58d7af)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test::tests::two_line_empty_lines ... ok
[INFO] [stdout] test test::tests::no_newline ... ok
[INFO] [stdout] test test::tests::single_line ... ok
[INFO] [stdout] test test::tests::empty ... ok
[INFO] [stdout] test test::tests::two_line ... ok
[INFO] [stdout] test test::tests::empty_lines ... ok
[INFO] [stdout] test test::tests::two_line_remainder ... ok
[INFO] [stdout] test test::tests::fuzztest ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prefix_writer
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "316f8ff714dbdfe21bfe332581a83f0e23992059f068f89fa6954f0e2ffde924", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "316f8ff714dbdfe21bfe332581a83f0e23992059f068f89fa6954f0e2ffde924", kill_on_drop: false }`
[INFO] [stdout] 316f8ff714dbdfe21bfe332581a83f0e23992059f068f89fa6954f0e2ffde924