[INFO] fetching crate stack-string 0.6.4...
[INFO] testing stack-string-0.6.4 against 1.59.0 for beta-1.60-1
[INFO] extracting crate stack-string 0.6.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate stack-string 0.6.4 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 stack-string 0.6.4
[INFO] finished tweaking crates.io crate stack-string 0.6.4
[INFO] tweaked toml for crates.io crate stack-string 0.6.4 written to /workspace/builds/worker-2/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3a35433a6b2be83ca435a59e7269752e1be2cd13f4042a4eda6f5e131154a762
[INFO] running `Command { std: "docker" "start" "-a" "3a35433a6b2be83ca435a59e7269752e1be2cd13f4042a4eda6f5e131154a762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a35433a6b2be83ca435a59e7269752e1be2cd13f4042a4eda6f5e131154a762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a35433a6b2be83ca435a59e7269752e1be2cd13f4042a4eda6f5e131154a762", kill_on_drop: false }`
[INFO] [stdout] 3a35433a6b2be83ca435a59e7269752e1be2cd13f4042a4eda6f5e131154a762
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b158934cc08db37815dd0a8f4feb9f51f7f504e7adebec3fd5e2fa5e00711a72
[INFO] running `Command { std: "docker" "start" "-a" "b158934cc08db37815dd0a8f4feb9f51f7f504e7adebec3fd5e2fa5e00711a72", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling smartstring v0.2.10
[INFO] [stderr]    Compiling smartcow v0.1.0
[INFO] [stderr]    Compiling stack-string v0.6.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.47s
[INFO] running `Command { std: "docker" "inspect" "b158934cc08db37815dd0a8f4feb9f51f7f504e7adebec3fd5e2fa5e00711a72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b158934cc08db37815dd0a8f4feb9f51f7f504e7adebec3fd5e2fa5e00711a72", kill_on_drop: false }`
[INFO] [stdout] b158934cc08db37815dd0a8f4feb9f51f7f504e7adebec3fd5e2fa5e00711a72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 646ac261852797fed09355313f1bedfa4bca5365c8a2c047ba30bfd90b893843
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "646ac261852797fed09355313f1bedfa4bca5365c8a2c047ba30bfd90b893843", kill_on_drop: false }`
[INFO] [stderr]    Compiling stack-string v0.6.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "646ac261852797fed09355313f1bedfa4bca5365c8a2c047ba30bfd90b893843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "646ac261852797fed09355313f1bedfa4bca5365c8a2c047ba30bfd90b893843", kill_on_drop: false }`
[INFO] [stdout] 646ac261852797fed09355313f1bedfa4bca5365c8a2c047ba30bfd90b893843
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d527d10287c1f70eeff29a597dfb3b9aab4de10e1eeec33e4980a31fea8bdabb
[INFO] running `Command { std: "docker" "start" "-a" "d527d10287c1f70eeff29a597dfb3b9aab4de10e1eeec33e4980a31fea8bdabb", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/stack_string-53f75bb8f67a7b02)
[INFO] [stdout] 
[INFO] [stdout] running 51 tests
[INFO] [stdout] test small_string::tests::test_borrow ... ok
[INFO] [stdout] test small_string::tests::test_from_str ... ok
[INFO] [stdout] test small_string::tests::test_from_utf8 ... ok
[INFO] [stdout] test small_string::tests::test_equality ... ok
[INFO] [stdout] test small_string::tests::test_smallstring_from_string ... ok
[INFO] [stdout] test small_string::tests::test_string_from_smallstring ... ok
[INFO] [stdout] test small_string::tests::test_partial_eq_string ... ok
[INFO] [stdout] test stack_cow::tests::test_contains_stack_cow ... ok
[INFO] [stdout] test stack_cow::tests::test_contains_char ... ok
[INFO] [stdout] test small_string::tests::test_write_smallstring ... ok
[INFO] [stdout] test stack_cow::tests::test_from_str ... ok
[INFO] [stdout] test stack_cow::tests::test_as_ref ... ok
[INFO] [stdout] test stack_cow::tests::test_from_utf8_lossy ... ok
[INFO] [stdout] test stack_cow::tests::test_from_utf8 ... ok
[INFO] [stdout] test small_string::tests::test_from_iterator_char ... ok
[INFO] [stdout] test stack_cow::tests::test_stack_cow_from_string ... ok
[INFO] [stdout] test stack_cow::tests::test_smartstring_validate ... ok
[INFO] [stdout] test stack_cow::tests::test_partialeq_cow ... ok
[INFO] [stdout] test stack_cow::tests::test_string_from_stack_cow ... ok
[INFO] [stdout] test stack_string::tests::test_as_ref ... ok
[INFO] [stdout] test stack_string::tests::test_borrow ... ok
[INFO] [stdout] test stack_string::tests::test_contains_char ... ok
[INFO] [stdout] test stack_string::tests::test_contains_stackstring ... ok
[INFO] [stdout] test stack_string::tests::test_default ... ok
[INFO] [stdout] test stack_string::tests::test_equality ... ok
[INFO] [stdout] test stack_string::tests::test_format_sstr ... ok
[INFO] [stdout] test stack_string::tests::test_from_display ... ok
[INFO] [stdout] test stack_string::tests::test_from_iterator_char ... ok
[INFO] [stdout] test stack_string::tests::test_from_str ... ok
[INFO] [stdout] test stack_string::tests::test_from_utf8 ... ok
[INFO] [stdout] test stack_string::tests::test_from_utf8_lossy ... ok
[INFO] [stdout] test stack_string::tests::test_from_utf8_vec ... ok
[INFO] [stdout] test stack_string::tests::test_partial_eq_string ... ok
[INFO] [stdout] test stack_string::tests::test_partialeq_cow ... ok
[INFO] [stdout] test stack_string::tests::test_smartstring_validate ... ok
[INFO] [stdout] test stack_string::tests::test_split_off ... ok
[INFO] [stdout] test stack_string::tests::test_stackstring_from_string ... ok
[INFO] [stdout] test stack_string::tests::test_string_from_stackstring ... ok
[INFO] [stdout] test small_string::tests::test_contains_char ... ok
[INFO] [stdout] test small_string::tests::test_as_ref ... ok
[INFO] [stdout] test small_string::tests::test_contains_smallstring ... ok
[INFO] [stdout] test small_string::tests::test_from_display ... ok
[INFO] [stdout] test small_string::tests::test_default ... ok
[INFO] [stdout] test small_string::tests::test_partialeq_cow ... ok
[INFO] [stdout] test small_string::tests::test_small_string_split_off ... ok
[INFO] [stdout] test stack_cow::tests::test_equality ... ok
[INFO] [stdout] test stack_cow::tests::test_borrow ... ok
[INFO] [stdout] test stack_cow::tests::test_default ... ok
[INFO] [stdout] test stack_cow::tests::test_from_iterator_char ... ok
[INFO] [stdout] test stack_cow::tests::test_from_display ... ok
[INFO] [stdout] test stack_cow::tests::test_partial_eq_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 51 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stack-string
[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" "d527d10287c1f70eeff29a597dfb3b9aab4de10e1eeec33e4980a31fea8bdabb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d527d10287c1f70eeff29a597dfb3b9aab4de10e1eeec33e4980a31fea8bdabb", kill_on_drop: false }`
[INFO] [stdout] d527d10287c1f70eeff29a597dfb3b9aab4de10e1eeec33e4980a31fea8bdabb