[INFO] fetching crate undo 0.46.2...
[INFO] testing undo-0.46.2 against 1.52.1 for beta-1.52-2
[INFO] extracting crate undo 0.46.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate undo 0.46.2 on toolchain 1.52.1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate undo 0.46.2
[INFO] finished tweaking crates.io crate undo 0.46.2
[INFO] tweaked toml for crates.io crate undo 0.46.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "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] 7db4cc1c13571aa389b2eca52cff78528195bb2a6278af753cb6e223868623d4
[INFO] running `Command { std: "docker" "start" "-a" "7db4cc1c13571aa389b2eca52cff78528195bb2a6278af753cb6e223868623d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7db4cc1c13571aa389b2eca52cff78528195bb2a6278af753cb6e223868623d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7db4cc1c13571aa389b2eca52cff78528195bb2a6278af753cb6e223868623d4", kill_on_drop: false }`
[INFO] [stdout] 7db4cc1c13571aa389b2eca52cff78528195bb2a6278af753cb6e223868623d4
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6808db3656cba33af99ddca3762b242bd0f8fd19c35df5d5c92c7bcbf093c9e
[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" "b6808db3656cba33af99ddca3762b242bd0f8fd19c35df5d5c92c7bcbf093c9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling arrayvec v0.7.0
[INFO] [stderr]    Compiling undo v0.46.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.71s
[INFO] running `Command { std: "docker" "inspect" "b6808db3656cba33af99ddca3762b242bd0f8fd19c35df5d5c92c7bcbf093c9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6808db3656cba33af99ddca3762b242bd0f8fd19c35df5d5c92c7bcbf093c9e", kill_on_drop: false }`
[INFO] [stdout] b6808db3656cba33af99ddca3762b242bd0f8fd19c35df5d5c92c7bcbf093c9e
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "test" "--frozen" "--no-run" "--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] 31e14a270607cc1d3592464d4f8727926fe33c6a872a6a962386679f0b4a5166
[INFO] running `Command { std: "docker" "start" "-a" "31e14a270607cc1d3592464d4f8727926fe33c6a872a6a962386679f0b4a5166", kill_on_drop: false }`
[INFO] [stderr]    Compiling undo v0.46.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "31e14a270607cc1d3592464d4f8727926fe33c6a872a6a962386679f0b4a5166", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31e14a270607cc1d3592464d4f8727926fe33c6a872a6a962386679f0b4a5166", kill_on_drop: false }`
[INFO] [stdout] 31e14a270607cc1d3592464d4f8727926fe33c6a872a6a962386679f0b4a5166
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "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] a278108b34769a7ebe6c790c15ec82dbbb70d568e1dfda9d1290ff55bb84acfc
[INFO] running `Command { std: "docker" "start" "-a" "a278108b34769a7ebe6c790c15ec82dbbb70d568e1dfda9d1290ff55bb84acfc", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/undo-094f85686eeaa87f)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test record::tests::checkpoint_cancel ... ok
[INFO] [stdout] test history::tests::go_to ... ok
[INFO] [stdout] test record::tests::checkpoint_saved ... ok
[INFO] [stdout] test record::tests::dyn_trait ... ok
[INFO] [stdout] test record::tests::checkpoint_commit ... ok
[INFO] [stdout] test record::tests::go_to ... ok
[INFO] [stdout] test record::tests::queue_commit ... ok
[INFO] [stdout] test timeline::tests::limit ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests undo
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/record.rs - record::Builder (line 418) ... ok
[INFO] [stdout] test src/history.rs - history::Builder (line 443) ... ok
[INFO] [stdout] test src/timeline.rs - timeline::Timeline (line 26) ... ok
[INFO] [stdout] test src/record.rs - record::Record (line 32) ... ok
[INFO] [stdout] test src/history.rs - history::Queue (line 522) ... ok
[INFO] [stdout] test src/record.rs - record::Queue (line 517) ... ok
[INFO] [stdout] test src/lib.rs - (line 36) ... ok
[INFO] [stdout] test src/history.rs - history::History (line 24) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a278108b34769a7ebe6c790c15ec82dbbb70d568e1dfda9d1290ff55bb84acfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a278108b34769a7ebe6c790c15ec82dbbb70d568e1dfda9d1290ff55bb84acfc", kill_on_drop: false }`
[INFO] [stdout] a278108b34769a7ebe6c790c15ec82dbbb70d568e1dfda9d1290ff55bb84acfc