[INFO] fetching crate undo 0.42.3...
[INFO] testing undo-0.42.3 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate undo 0.42.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate undo 0.42.3 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate undo 0.42.3
[INFO] finished tweaking crates.io crate undo 0.42.3
[INFO] tweaked toml for crates.io crate undo 0.42.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded colored v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cc6dc1a18528dbe1e28752a3efcc1e44aec1dfa5917d72413400f5f1fb2663d
[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" "0cc6dc1a18528dbe1e28752a3efcc1e44aec1dfa5917d72413400f5f1fb2663d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cc6dc1a18528dbe1e28752a3efcc1e44aec1dfa5917d72413400f5f1fb2663d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cc6dc1a18528dbe1e28752a3efcc1e44aec1dfa5917d72413400f5f1fb2663d", kill_on_drop: false }`
[INFO] [stdout] 0cc6dc1a18528dbe1e28752a3efcc1e44aec1dfa5917d72413400f5f1fb2663d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69220374db282376c20b51ce586e0655cc968f3faba2b5368bb1dc1b782eb67c
[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" "69220374db282376c20b51ce586e0655cc968f3faba2b5368bb1dc1b782eb67c", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling undo v0.42.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.84s
[INFO] running `Command { std: "docker" "inspect" "69220374db282376c20b51ce586e0655cc968f3faba2b5368bb1dc1b782eb67c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69220374db282376c20b51ce586e0655cc968f3faba2b5368bb1dc1b782eb67c", kill_on_drop: false }`
[INFO] [stdout] 69220374db282376c20b51ce586e0655cc968f3faba2b5368bb1dc1b782eb67c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8e39253da603597a525d0954deb058d56738c25061e3d4531d7493e6b85c480
[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" "b8e39253da603597a525d0954deb058d56738c25061e3d4531d7493e6b85c480", kill_on_drop: false }`
[INFO] [stderr]    Compiling undo v0.42.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.94s
[INFO] running `Command { std: "docker" "inspect" "b8e39253da603597a525d0954deb058d56738c25061e3d4531d7493e6b85c480", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8e39253da603597a525d0954deb058d56738c25061e3d4531d7493e6b85c480", kill_on_drop: false }`
[INFO] [stdout] b8e39253da603597a525d0954deb058d56738c25061e3d4531d7493e6b85c480
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d4d07c84a3a79b43ab26ae6dbfcb8b831d4559588e36813460dfa994eb35d77b
[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" "d4d07c84a3a79b43ab26ae6dbfcb8b831d4559588e36813460dfa994eb35d77b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/undo-8c5896bdc58992a7
[INFO] [stdout] running 6 tests
[INFO] [stderr]    Doc-tests undo
[INFO] [stdout] test record::tests::checkpoint_commit ... ok
[INFO] [stdout] test record::tests::checkpoint_saved ... ok
[INFO] [stdout] test record::tests::go_to ... ok
[INFO] [stdout] test record::tests::queue_commit ... ok
[INFO] [stdout] test history::tests::go_to ... ok
[INFO] [stdout] test record::tests::checkpoint_cancel ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/record.rs - record::Record (line 31) ... ok
[INFO] [stdout] test src/record.rs - record::Builder (line 423) ... ok
[INFO] [stdout] test src/history.rs - history::Builder (line 441) ... ok
[INFO] [stdout] test src/record.rs - record::Queue (line 521) ... ok
[INFO] [stdout] test src/history.rs - history::Queue (line 519) ... ok
[INFO] [stdout] test src/history.rs - history::History (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.50s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d4d07c84a3a79b43ab26ae6dbfcb8b831d4559588e36813460dfa994eb35d77b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4d07c84a3a79b43ab26ae6dbfcb8b831d4559588e36813460dfa994eb35d77b", kill_on_drop: false }`
[INFO] [stdout] d4d07c84a3a79b43ab26ae6dbfcb8b831d4559588e36813460dfa994eb35d77b