[INFO] fetching crate mergable 0.17.0...
[INFO] testing mergable-0.17.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate mergable 0.17.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mergable 0.17.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mergable 0.17.0
[INFO] finished tweaking crates.io crate mergable 0.17.0
[INFO] tweaked toml for crates.io crate mergable 0.17.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e5f834f01bbe6f9350054ea8183458e692c04f21592afec6b4fb4aa865807eb
[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" "6e5f834f01bbe6f9350054ea8183458e692c04f21592afec6b4fb4aa865807eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e5f834f01bbe6f9350054ea8183458e692c04f21592afec6b4fb4aa865807eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e5f834f01bbe6f9350054ea8183458e692c04f21592afec6b4fb4aa865807eb", kill_on_drop: false }`
[INFO] [stdout] 6e5f834f01bbe6f9350054ea8183458e692c04f21592afec6b4fb4aa865807eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] cb00c816c4ef0a4b73cbaad3bfc4bf67bf2a2cb32b62cc1792bf99f9913f18a9
[INFO] running `Command { std: "docker" "start" "-a" "cb00c816c4ef0a4b73cbaad3bfc4bf67bf2a2cb32b62cc1792bf99f9913f18a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling mergable v0.17.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.21s
[INFO] running `Command { std: "docker" "inspect" "cb00c816c4ef0a4b73cbaad3bfc4bf67bf2a2cb32b62cc1792bf99f9913f18a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb00c816c4ef0a4b73cbaad3bfc4bf67bf2a2cb32b62cc1792bf99f9913f18a9", kill_on_drop: false }`
[INFO] [stdout] cb00c816c4ef0a4b73cbaad3bfc4bf67bf2a2cb32b62cc1792bf99f9913f18a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] 712d26395ef0eb417f3d46ab4f8e1ad71dc3a3f56ae3cfcf1df07997853c5e4d
[INFO] running `Command { std: "docker" "start" "-a" "712d26395ef0eb417f3d46ab4f8e1ad71dc3a3f56ae3cfcf1df07997853c5e4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling mergable v0.17.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `Command { std: "docker" "inspect" "712d26395ef0eb417f3d46ab4f8e1ad71dc3a3f56ae3cfcf1df07997853c5e4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "712d26395ef0eb417f3d46ab4f8e1ad71dc3a3f56ae3cfcf1df07997853c5e4d", kill_on_drop: false }`
[INFO] [stdout] 712d26395ef0eb417f3d46ab4f8e1ad71dc3a3f56ae3cfcf1df07997853c5e4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f7a9dc9d1a1ef75e7c1d50226483f1d610073f1041697c59eed223d4f4c8f07b
[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" "f7a9dc9d1a1ef75e7c1d50226483f1d610073f1041697c59eed223d4f4c8f07b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mergable-3b3381ba0c3f13ec)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test cell::test_update ... ok
[INFO] [stdout] test cell::test_revert_stale ... ok
[INFO] [stdout] test dict::test_dict ... ok
[INFO] [stdout] test dict::test_dict_remove_merge_revive ... ok
[INFO] [stdout] test dict::test_undo_insert ... ok
[INFO] [stdout] test dict::test_undo_old_update ... ok
[INFO] [stdout] test cell::test_merge ... ok
[INFO] [stdout] test dict::test_dict_remove_old ... ok
[INFO] [stdout] test dict::test_undo_update ... ok
[INFO] [stderr]    Doc-tests mergable
[INFO] [stdout] test dict::test_dict_remove_new ... ok
[INFO] [stdout] test cell::test_revert ... ok
[INFO] [stdout] test dict::test_undo_remove ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/cell.rs - cell::Cell<T,crate::Sequence<SequenceFactory>>::borrow_mut (line 31) ... ok
[INFO] [stdout] test src/cell.rs - cell::Cell<T,crate::Sequence<SequenceFactory>>::borrow_mut (line 26) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.11s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f7a9dc9d1a1ef75e7c1d50226483f1d610073f1041697c59eed223d4f4c8f07b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7a9dc9d1a1ef75e7c1d50226483f1d610073f1041697c59eed223d4f4c8f07b", kill_on_drop: false }`
[INFO] [stdout] f7a9dc9d1a1ef75e7c1d50226483f1d610073f1041697c59eed223d4f4c8f07b