[INFO] fetching crate undo 0.41.0...
[INFO] testing undo-0.41.0 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate undo 0.41.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate undo 0.41.0 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate undo 0.41.0
[INFO] finished tweaking crates.io crate undo 0.41.0
[INFO] tweaked toml for crates.io crate undo 0.41.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f42be524812193640e76daf7a60b935329b759b9640a80b8b4dc9dbe8acd4e9e
[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" "f42be524812193640e76daf7a60b935329b759b9640a80b8b4dc9dbe8acd4e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f42be524812193640e76daf7a60b935329b759b9640a80b8b4dc9dbe8acd4e9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f42be524812193640e76daf7a60b935329b759b9640a80b8b4dc9dbe8acd4e9e", kill_on_drop: false }`
[INFO] [stdout] f42be524812193640e76daf7a60b935329b759b9640a80b8b4dc9dbe8acd4e9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7b9b7a9ca23b5ae8dcf56a279915562cba2932c80a1cd75faeb3523457665e8
[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" "d7b9b7a9ca23b5ae8dcf56a279915562cba2932c80a1cd75faeb3523457665e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling undo v0.41.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.74s
[INFO] running `Command { std: "docker" "inspect" "d7b9b7a9ca23b5ae8dcf56a279915562cba2932c80a1cd75faeb3523457665e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7b9b7a9ca23b5ae8dcf56a279915562cba2932c80a1cd75faeb3523457665e8", kill_on_drop: false }`
[INFO] [stdout] d7b9b7a9ca23b5ae8dcf56a279915562cba2932c80a1cd75faeb3523457665e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89af42dbfd56e495b3444130317a6b87ed372ba4a23790f876bca7114d34ace0
[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" "89af42dbfd56e495b3444130317a6b87ed372ba4a23790f876bca7114d34ace0", kill_on_drop: false }`
[INFO] [stderr]    Compiling undo v0.41.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `Command { std: "docker" "inspect" "89af42dbfd56e495b3444130317a6b87ed372ba4a23790f876bca7114d34ace0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89af42dbfd56e495b3444130317a6b87ed372ba4a23790f876bca7114d34ace0", kill_on_drop: false }`
[INFO] [stdout] 89af42dbfd56e495b3444130317a6b87ed372ba4a23790f876bca7114d34ace0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6cf681ceb91a1a992f17c440b141107d213e0863d001f9087e32bb27df6df72e
[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" "6cf681ceb91a1a992f17c440b141107d213e0863d001f9087e32bb27df6df72e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/undo-4507477ed060599c
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests undo
[INFO] [stdout] running 5 tests
[INFO] [stdout] test checkpoint::tests::cancel ... ok
[INFO] [stdout] test checkpoint::tests::saved ... ok
[INFO] [stdout] test record::tests::go_to ... ok
[INFO] [stdout] test queue::tests::commit ... ok
[INFO] [stdout] test checkpoint::tests::commit ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test src/display.rs - display::Display (line 9) ... ok
[INFO] [stdout] test src/record.rs - record::Builder (line 390) ... ok
[INFO] [stdout] test src/command.rs - command::with_text (line 148) ... ok
[INFO] [stdout] test src/record.rs - record::Record (line 14) ... ok
[INFO] [stdout] test src/checkpoint.rs - checkpoint::Checkpoint (line 10) ... ok
[INFO] [stdout] test src/command.rs - command::from_fn (line 9) ... ok
[INFO] [stdout] test src/command.rs - command::with_merge (line 207) ... ok
[INFO] [stdout] test src/command.rs - command::join (line 76) ... ok
[INFO] [stdout] test src/queue.rs - queue::Queue (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6cf681ceb91a1a992f17c440b141107d213e0863d001f9087e32bb27df6df72e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cf681ceb91a1a992f17c440b141107d213e0863d001f9087e32bb27df6df72e", kill_on_drop: false }`
[INFO] [stdout] 6cf681ceb91a1a992f17c440b141107d213e0863d001f9087e32bb27df6df72e