[INFO] fetching crate str-buf 2.0.4...
[INFO] testing str-buf-2.0.4 against 1.59.0 for beta-1.60-1
[INFO] extracting crate str-buf 2.0.4 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate str-buf 2.0.4 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate str-buf 2.0.4
[INFO] finished tweaking crates.io crate str-buf 2.0.4
[INFO] tweaked toml for crates.io crate str-buf 2.0.4 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38d4b49b586e70750879c2f6ce0494ec49133e23b49e062e84f1655ed4b81742
[INFO] running `Command { std: "docker" "start" "-a" "38d4b49b586e70750879c2f6ce0494ec49133e23b49e062e84f1655ed4b81742", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38d4b49b586e70750879c2f6ce0494ec49133e23b49e062e84f1655ed4b81742", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38d4b49b586e70750879c2f6ce0494ec49133e23b49e062e84f1655ed4b81742", kill_on_drop: false }`
[INFO] [stdout] 38d4b49b586e70750879c2f6ce0494ec49133e23b49e062e84f1655ed4b81742
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e820437f54ba797e8cc4ea62226847f2d884b456cc7bc76fc89911dc1169b747
[INFO] running `Command { std: "docker" "start" "-a" "e820437f54ba797e8cc4ea62226847f2d884b456cc7bc76fc89911dc1169b747", kill_on_drop: false }`
[INFO] [stderr]    Compiling str-buf v2.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "e820437f54ba797e8cc4ea62226847f2d884b456cc7bc76fc89911dc1169b747", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e820437f54ba797e8cc4ea62226847f2d884b456cc7bc76fc89911dc1169b747", kill_on_drop: false }`
[INFO] [stdout] e820437f54ba797e8cc4ea62226847f2d884b456cc7bc76fc89911dc1169b747
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6407b41e413df9c071f3cacc03f9dd3ef61b76300100195cc22074bf8809d6bf
[INFO] running `Command { std: "docker" "start" "-a" "6407b41e413df9c071f3cacc03f9dd3ef61b76300100195cc22074bf8809d6bf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling str-buf v2.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "6407b41e413df9c071f3cacc03f9dd3ef61b76300100195cc22074bf8809d6bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6407b41e413df9c071f3cacc03f9dd3ef61b76300100195cc22074bf8809d6bf", kill_on_drop: false }`
[INFO] [stdout] 6407b41e413df9c071f3cacc03f9dd3ef61b76300100195cc22074bf8809d6bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 33f0d2a06142185dc6bee62588862272b228e8b0d3a1dc26ae238477fd2c95a5
[INFO] running `Command { std: "docker" "start" "-a" "33f0d2a06142185dc6bee62588862272b228e8b0d3a1dc26ae238477fd2c95a5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/str_buf-b81bdfc5ebaa875e)
[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] [stderr]      Running tests/panic_asserts.rs (/opt/rustwide/target/debug/deps/panic_asserts-82c6c7fb8d773fcc)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test and_overflow_panic - should panic ... ok
[INFO] [stdout] test and_overflow_panic_over_max_capacity - should panic ... ok
[INFO] [stdout] test from_str_overflow_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/push.rs (/opt/rustwide/target/debug/deps/push-ff57147e50b4e2b8)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests str-buf
[INFO] [stdout] running 1 test
[INFO] [stdout] test should_correctly_truncate_by_char_boundary ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - StrBuf (line 43) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.35s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "33f0d2a06142185dc6bee62588862272b228e8b0d3a1dc26ae238477fd2c95a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33f0d2a06142185dc6bee62588862272b228e8b0d3a1dc26ae238477fd2c95a5", kill_on_drop: false }`
[INFO] [stdout] 33f0d2a06142185dc6bee62588862272b228e8b0d3a1dc26ae238477fd2c95a5