[INFO] fetching crate prefix_writer 0.1.1...
[INFO] testing prefix_writer-0.1.1 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate prefix_writer 0.1.1 into /workspace/builds/worker-4-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-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate prefix_writer 0.1.1 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9eba507873f1984296f43517758f4aa9bf085479f5b86a0ccb85d488eab1025
[INFO] running `Command { std: "docker" "start" "-a" "e9eba507873f1984296f43517758f4aa9bf085479f5b86a0ccb85d488eab1025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9eba507873f1984296f43517758f4aa9bf085479f5b86a0ccb85d488eab1025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9eba507873f1984296f43517758f4aa9bf085479f5b86a0ccb85d488eab1025", kill_on_drop: false }`
[INFO] [stdout] e9eba507873f1984296f43517758f4aa9bf085479f5b86a0ccb85d488eab1025
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a2eda96b82242ca2dc2efefee223cec41e2c6df6fdd41083df2ca1dd971e216
[INFO] running `Command { std: "docker" "start" "-a" "6a2eda96b82242ca2dc2efefee223cec41e2c6df6fdd41083df2ca1dd971e216", 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 0.16s
[INFO] running `Command { std: "docker" "inspect" "6a2eda96b82242ca2dc2efefee223cec41e2c6df6fdd41083df2ca1dd971e216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a2eda96b82242ca2dc2efefee223cec41e2c6df6fdd41083df2ca1dd971e216", kill_on_drop: false }`
[INFO] [stdout] 6a2eda96b82242ca2dc2efefee223cec41e2c6df6fdd41083df2ca1dd971e216
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4569eeda4dbbeb59c980925ef172f76a9e8b379cc293fef63ecc9ea255194476
[INFO] running `Command { std: "docker" "start" "-a" "4569eeda4dbbeb59c980925ef172f76a9e8b379cc293fef63ecc9ea255194476", kill_on_drop: false }`
[INFO] [stderr]    Compiling prefix_writer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "4569eeda4dbbeb59c980925ef172f76a9e8b379cc293fef63ecc9ea255194476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4569eeda4dbbeb59c980925ef172f76a9e8b379cc293fef63ecc9ea255194476", kill_on_drop: false }`
[INFO] [stdout] 4569eeda4dbbeb59c980925ef172f76a9e8b379cc293fef63ecc9ea255194476
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b49c91196466d1e2d6670eec528780006fdc40d3def4b4a705adfc34f4c313d4
[INFO] running `Command { std: "docker" "start" "-a" "b49c91196466d1e2d6670eec528780006fdc40d3def4b4a705adfc34f4c313d4", 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-f29e187d50f06654)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test::tests::empty ... ok
[INFO] [stdout] test test::tests::empty_lines ... ok
[INFO] [stdout] test test::tests::no_newline ... ok
[INFO] [stdout] test test::tests::two_line ... ok
[INFO] [stdout] test test::tests::two_line_empty_lines ... ok
[INFO] [stdout] test test::tests::single_line ... ok
[INFO] [stdout] test test::tests::two_line_remainder ... ok
[INFO] [stdout] test test::tests::fuzztest ... ok
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prefix_writer
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[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" "b49c91196466d1e2d6670eec528780006fdc40d3def4b4a705adfc34f4c313d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b49c91196466d1e2d6670eec528780006fdc40d3def4b4a705adfc34f4c313d4", kill_on_drop: false }`
[INFO] [stdout] b49c91196466d1e2d6670eec528780006fdc40d3def4b4a705adfc34f4c313d4