[INFO] fetching crate mastring 0.2.0...
[INFO] testing mastring-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate mastring 0.2.0 into /workspace/builds/worker-2-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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mastring 0.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 601b2b7b0f244a3260531211201dd8eeaa29756b33436d9b6c10d7a100551314
[INFO] running `Command { std: "docker" "start" "-a" "601b2b7b0f244a3260531211201dd8eeaa29756b33436d9b6c10d7a100551314", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "601b2b7b0f244a3260531211201dd8eeaa29756b33436d9b6c10d7a100551314", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "601b2b7b0f244a3260531211201dd8eeaa29756b33436d9b6c10d7a100551314", kill_on_drop: false }`
[INFO] [stdout] 601b2b7b0f244a3260531211201dd8eeaa29756b33436d9b6c10d7a100551314
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8857204b904648ce09e7a06253c9a697af7d0112e1848af1a2445de2d772df94
[INFO] running `Command { std: "docker" "start" "-a" "8857204b904648ce09e7a06253c9a697af7d0112e1848af1a2445de2d772df94", kill_on_drop: false }`
[INFO] [stderr]    Compiling mastring v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "8857204b904648ce09e7a06253c9a697af7d0112e1848af1a2445de2d772df94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8857204b904648ce09e7a06253c9a697af7d0112e1848af1a2445de2d772df94", kill_on_drop: false }`
[INFO] [stdout] 8857204b904648ce09e7a06253c9a697af7d0112e1848af1a2445de2d772df94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68591313575c391cfca1206113dc438faab830c4998e30d40790b27bf9ca5521
[INFO] running `Command { std: "docker" "start" "-a" "68591313575c391cfca1206113dc438faab830c4998e30d40790b27bf9ca5521", kill_on_drop: false }`
[INFO] [stderr]    Compiling mastring v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "68591313575c391cfca1206113dc438faab830c4998e30d40790b27bf9ca5521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68591313575c391cfca1206113dc438faab830c4998e30d40790b27bf9ca5521", kill_on_drop: false }`
[INFO] [stdout] 68591313575c391cfca1206113dc438faab830c4998e30d40790b27bf9ca5521
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8e3f787af0cd2bbd9b881fa9173a27ba6d2d3fd4d89f02840779b9067dcc66bb
[INFO] running `Command { std: "docker" "start" "-a" "8e3f787af0cd2bbd9b881fa9173a27ba6d2d3fd4d89f02840779b9067dcc66bb", 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-3880c81e4109b4da)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running tests/bytestring.rs (/opt/rustwide/target/debug/deps/bytestring-e267b2c7e76fabd8)
[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] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test test_clear ... ok
[INFO] [stdout] test test_add_and_eq ... ok
[INFO] [stdout] test test_capacity ... 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_builder ... ok
[INFO] [stdout] test test_from_vec ... ok
[INFO] [stdout] test test_new ... ok
[INFO] [stdout] test test_from_static ... ok
[INFO] [stdout] test test_from_slice ... ok
[INFO] [stdout] test test_into_vec ... ok
[INFO] [stdout] test test_reserve ... ok
[INFO] [stdout] test test_get_mode ... ok
[INFO] [stdout] test test_debug ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bytestringbuilder.rs (/opt/rustwide/target/debug/deps/bytestringbuilder-20860da8834e8941)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[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_from_mabs ... ok
[INFO] [stdout] test test_add_and_eq ... ok
[INFO] [stdout] test test_from_slice ... ok
[INFO] [stdout] test test_capacity ... ok
[INFO] [stdout] test test_deref_mut ... ok
[INFO] [stdout] test test_from_vec ... ok
[INFO] [stdout] test test_into_vec ... ok
[INFO] [stdout] test test_get_mode ... ok
[INFO] [stdout] test test_reserve ... ok
[INFO] [stdout] test test_new ... 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] [stderr]      Running tests/string.rs (/opt/rustwide/target/debug/deps/string-346e5b56b7eb9075)
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test test_as_mut_slice ... ok
[INFO] [stdout] test test_add_and_eq ... ok
[INFO] [stdout] test test_capacity ... ok
[INFO] [stdout] test test_clone_and_drop ... ok
[INFO] [stdout] test test_debug ... ok
[INFO] [stdout] test test_clear ... ok
[INFO] [stdout] test test_deref_mut ... ok
[INFO] [stdout] test test_deref ... ok
[INFO] [stdout] test test_from_builder ... ok
[INFO] [stdout] test test_from_str ... ok
[INFO] [stdout] test test_from_static ... ok
[INFO] [stdout] test test_from_utf8 ... ok
[INFO] [stdout] test test_display ... ok
[INFO] [stdout] test test_into_bytes ... ok
[INFO] [stdout] test test_into_string ... ok
[INFO] [stdout] test test_from_slice ... ok
[INFO] [stdout] test test_get_mode ... ok
[INFO] [stdout] test test_into_vec ... ok
[INFO] [stdout] test test_from_utf8_unchecked ... ok
[INFO] [stdout] test test_new ... ok
[INFO] [stdout] test test_reserve ... ok
[INFO] [stdout] test test_from_utf8_lossy ... ok
[INFO] [stderr]      Running tests/stringbuilder.rs (/opt/rustwide/target/debug/deps/stringbuilder-69b810d113cfb09d)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test test_capacity ... ok
[INFO] [stdout] test test_add_and_eq ... ok
[INFO] [stdout] test test_clone_and_drop ... ok
[INFO] [stdout] test test_as_mut_slice ... ok
[INFO] [stdout] test test_debug ... ok
[INFO] [stdout] test test_clear ... 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_string ... ok
[INFO] [stdout] test test_from_utf8 ... ok
[INFO] [stdout] test test_get_mode ... ok
[INFO] [stdout] test test_into_string ... ok
[INFO] [stdout] test test_from_slice ... ok
[INFO] [stdout] test test_from_utf8_lossy ... ok
[INFO] [stdout] test test_into_vec ... ok
[INFO] [stdout] test test_into_bytes ... ok
[INFO] [stderr]    Doc-tests mastring
[INFO] [stdout] test test_from_utf8_unchecked ... 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] [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" "8e3f787af0cd2bbd9b881fa9173a27ba6d2d3fd4d89f02840779b9067dcc66bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e3f787af0cd2bbd9b881fa9173a27ba6d2d3fd4d89f02840779b9067dcc66bb", kill_on_drop: false }`
[INFO] [stdout] 8e3f787af0cd2bbd9b881fa9173a27ba6d2d3fd4d89f02840779b9067dcc66bb