[INFO] fetching crate mastring 0.2.0...
[INFO] testing mastring-0.2.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate mastring 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate mastring 0.2.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mastring 0.2.0
[INFO] tweaked toml for crates.io crate mastring 0.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mastring 0.2.0 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] crate crates.io crate mastring 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d5c2d6a5409da47efb7df995d711508fcbdc8d9e6e8d641ecfa17b6d8e981ac8
[INFO] running `Command { std: "docker" "start" "-a" "d5c2d6a5409da47efb7df995d711508fcbdc8d9e6e8d641ecfa17b6d8e981ac8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5c2d6a5409da47efb7df995d711508fcbdc8d9e6e8d641ecfa17b6d8e981ac8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5c2d6a5409da47efb7df995d711508fcbdc8d9e6e8d641ecfa17b6d8e981ac8", kill_on_drop: false }`
[INFO] [stdout] d5c2d6a5409da47efb7df995d711508fcbdc8d9e6e8d641ecfa17b6d8e981ac8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 88f97ca42d0df17ab733830fd9669126727296c06626c1adf745160493caac3d
[INFO] running `Command { std: "docker" "start" "-a" "88f97ca42d0df17ab733830fd9669126727296c06626c1adf745160493caac3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling mastring v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "88f97ca42d0df17ab733830fd9669126727296c06626c1adf745160493caac3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88f97ca42d0df17ab733830fd9669126727296c06626c1adf745160493caac3d", kill_on_drop: false }`
[INFO] [stdout] 88f97ca42d0df17ab733830fd9669126727296c06626c1adf745160493caac3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ac8d8e033b68caf0aad739a35ade2356bbedf81c5a83f4292989f0e94b40faa2
[INFO] running `Command { std: "docker" "start" "-a" "ac8d8e033b68caf0aad739a35ade2356bbedf81c5a83f4292989f0e94b40faa2", kill_on_drop: false }`
[INFO] [stderr]    Compiling mastring v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "ac8d8e033b68caf0aad739a35ade2356bbedf81c5a83f4292989f0e94b40faa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac8d8e033b68caf0aad739a35ade2356bbedf81c5a83f4292989f0e94b40faa2", kill_on_drop: false }`
[INFO] [stdout] ac8d8e033b68caf0aad739a35ade2356bbedf81c5a83f4292989f0e94b40faa2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 0338f0c4c938ee0418c519e8506d5be2d533aa96a58bf8fcca1aed36c00af87a
[INFO] running `Command { std: "docker" "start" "-a" "0338f0c4c938ee0418c519e8506d5be2d533aa96a58bf8fcca1aed36c00af87a", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mastring-9a83fae7be5d90a6)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_len_transmutation ... ok
[INFO] [stdout] test test_reserve_extra_internal ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bytestring.rs (/opt/rustwide/target/debug/deps/bytestring-614e3d8f2cb861f6)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test test_add_and_eq ... ok
[INFO] [stdout] test test_clear ... ok
[INFO] [stdout] test test_clone_and_drop ... ok
[INFO] [stdout] test test_debug ... ok
[INFO] [stdout] test test_capacity ... ok
[INFO] [stdout] test test_deref ... ok
[INFO] [stdout] test test_deref_mut ... ok
[INFO] [stdout] test test_from_builder ... ok
[INFO] [stdout] test test_from_slice ... ok
[INFO] [stdout] test test_from_vec ... ok
[INFO] [stdout] test test_from_static ... ok
[INFO] [stdout] test test_get_mode ... ok
[INFO] [stdout] test test_into_vec ... ok
[INFO] [stdout] test test_new ... ok
[INFO] [stdout] test test_reserve ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bytestringbuilder.rs (/opt/rustwide/target/debug/deps/bytestringbuilder-7e13027bd7122290)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test test_add_and_eq ... ok
[INFO] [stderr]      Running tests/string.rs (/opt/rustwide/target/debug/deps/string-5e5f2c1350550156)
[INFO] [stdout] test test_capacity ... ok
[INFO] [stdout] test test_clear ... ok
[INFO] [stdout] test test_debug ... ok
[INFO] [stdout] test test_clone_and_drop ... ok
[INFO] [stdout] test test_deref ... ok
[INFO] [stdout] test test_deref_mut ... ok
[INFO] [stdout] test test_from_mabs ... ok
[INFO] [stdout] test test_from_slice ... ok
[INFO] [stdout] test test_from_vec ... ok
[INFO] [stdout] test test_get_mode ... ok
[INFO] [stdout] test test_into_vec ... ok
[INFO] [stdout] test test_new ... ok
[INFO] [stdout] test test_reserve ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test test_add_and_eq ... ok
[INFO] [stdout] test test_capacity ... ok
[INFO] [stdout] test test_as_mut_slice ... ok
[INFO] [stdout] test test_clear ... ok
[INFO] [stdout] test test_clone_and_drop ... ok
[INFO] [stdout] test test_debug ... ok
[INFO] [stdout] test test_deref ... ok
[INFO] [stdout] test test_deref_mut ... ok
[INFO] [stdout] test test_from_builder ... ok
[INFO] [stdout] test test_display ... ok
[INFO] [stderr]      Running tests/stringbuilder.rs (/opt/rustwide/target/debug/deps/stringbuilder-862b7c7477891091)
[INFO] [stdout] test test_from_slice ... ok
[INFO] [stdout] test test_from_static ... ok
[INFO] [stdout] test test_from_str ... ok
[INFO] [stdout] test test_from_utf8 ... ok
[INFO] [stdout] test test_from_utf8_lossy ... ok
[INFO] [stdout] test test_from_utf8_unchecked ... ok
[INFO] [stdout] test test_get_mode ... ok
[INFO] [stdout] test test_into_bytes ... ok
[INFO] [stdout] test test_into_string ... ok
[INFO] [stdout] test test_into_vec ... ok
[INFO] [stdout] test test_new ... ok
[INFO] [stdout] test test_reserve ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test test_add_and_eq ... ok
[INFO] [stdout] test test_as_mut_slice ... ok
[INFO] [stdout] test test_capacity ... ok
[INFO] [stdout] test test_clone_and_drop ... ok
[INFO] [stdout] test test_clear ... ok
[INFO] [stdout] test test_debug ... ok
[INFO] [stdout] test test_deref ... ok
[INFO] [stdout] test test_deref_mut ... ok
[INFO] [stdout] test test_display ... ok
[INFO] [stdout] test test_from_mas ... ok
[INFO] [stdout] test test_from_slice ... ok
[INFO] [stdout] test test_from_string ... ok
[INFO] [stdout] test test_from_utf8 ... ok
[INFO] [stdout] test test_from_utf8_unchecked ... ok
[INFO] [stdout] test test_from_utf8_lossy ... ok
[INFO] [stdout] test test_get_mode ... ok
[INFO] [stdout] test test_into_bytes ... ok
[INFO] [stdout] test test_into_string ... ok
[INFO] [stdout] test test_into_vec ... ok
[INFO] [stdout] test test_new ... ok
[INFO] [stdout] test test_reserve ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mastring
[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" "0338f0c4c938ee0418c519e8506d5be2d533aa96a58bf8fcca1aed36c00af87a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0338f0c4c938ee0418c519e8506d5be2d533aa96a58bf8fcca1aed36c00af87a", kill_on_drop: false }`
[INFO] [stdout] 0338f0c4c938ee0418c519e8506d5be2d533aa96a58bf8fcca1aed36c00af87a