[INFO] fetching crate strbuilder 0.2.0...
[INFO] testing strbuilder-0.2.0 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate strbuilder 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate strbuilder 0.2.0
[INFO] finished tweaking crates.io crate strbuilder 0.2.0
[INFO] tweaked toml for crates.io crate strbuilder 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate strbuilder 0.2.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate strbuilder 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f
[INFO] running `Command { std: "docker" "start" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling strbuilder v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling strbuilder v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/strbuilder-582283ad60abd095)
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test tests::test_everything_empty ... ok
[INFO] [stdout] test tests::test_from_empty_string_then_push ... ok
[INFO] [stdout] test tests::test_complex_asymmetric_pushes ... ok
[INFO] [stdout] test tests::test_from_short_string ... ok
[INFO] [stdout] test tests::test_push_large_string_crossing_multiple_chunks ... ok
[INFO] [stdout] test tests::test_into_string_conversion ... ok
[INFO] [stdout] test tests::test_push_str_exact_chunk_sizes ... ok
[INFO] [stdout] test tests::test_push_lot_strings ... ok
[INFO] [stdout] test tests::test_exact_chunk_bounds_plus_one_from ... ok
[INFO] [stdout] test tests::test_push_short_strings ... ok
[INFO] [stdout] test tests::test_display_trait_implementation ... ok
[INFO] [stdout] test tests::test_string_builder_alternating_empty_and_non_empty ... ok
[INFO] [stdout] test tests::test_string_builder_massive_growth ... ok
[INFO] [stdout] test tests::test_exact_chunk_bounds_from ... ok
[INFO] [stdout] test tests::test_from_and_push ... ok
[INFO] [stdout] test tests::test_string_builder_single_character_pushes ... ok
[INFO] [stdout] test tests::test_string_builder_very_long_initial_from ... ok
[INFO] [stdout] test tests::test_string_builder_push_exact_power_of_two_lengths ... ok
[INFO] [stdout] test tests::test_string_builder_multiple_to_string_calls ... ok
[INFO] [stdout] test tests::test_push_empty_strings ... ok
[INFO] [stdout] test tests::test_from_long_string ... ok
[INFO] [stdout] test tests::test_long_from_and_long_push ... ok
[INFO] [stdout] test tests::test_string_builder_unicode_and_emojis ... ok
[INFO] [stderr]    Doc-tests strbuilder
[INFO] [stdout] test tests::test_string_builder_with_special_characters ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f", kill_on_drop: false }`
[INFO] [stdout] a4fd56786d7004930f4ac70aaaf700f88ce150575e2a218f335c9a070e45b54f
