[INFO] fetching crate user_stable_vtable 0.3.0...
[INFO] testing user_stable_vtable-0.3.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate user_stable_vtable 0.3.0 into /workspace/builds/worker-79/source
[INFO] validating manifest of crates.io crate user_stable_vtable 0.3.0 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 user_stable_vtable 0.3.0
[INFO] finished tweaking crates.io crate user_stable_vtable 0.3.0
[INFO] tweaked toml for crates.io crate user_stable_vtable 0.3.0 written to /workspace/builds/worker-79/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-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] ba4b3aa048b146ff41a162c3689caabe247085f63a27ba4a575ae5ffb42db841
[INFO] running `Command { std: "docker" "start" "-a" "ba4b3aa048b146ff41a162c3689caabe247085f63a27ba4a575ae5ffb42db841", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba4b3aa048b146ff41a162c3689caabe247085f63a27ba4a575ae5ffb42db841", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba4b3aa048b146ff41a162c3689caabe247085f63a27ba4a575ae5ffb42db841", kill_on_drop: false }`
[INFO] [stdout] ba4b3aa048b146ff41a162c3689caabe247085f63a27ba4a575ae5ffb42db841
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] [stdout] 28baf8d41b01064873b42bc81ae65b406176ff25668bd1ad06401c5d1abf7d25
[INFO] running `Command { std: "docker" "start" "-a" "28baf8d41b01064873b42bc81ae65b406176ff25668bd1ad06401c5d1abf7d25", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling user_stable_vtable v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "28baf8d41b01064873b42bc81ae65b406176ff25668bd1ad06401c5d1abf7d25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28baf8d41b01064873b42bc81ae65b406176ff25668bd1ad06401c5d1abf7d25", kill_on_drop: false }`
[INFO] [stdout] 28baf8d41b01064873b42bc81ae65b406176ff25668bd1ad06401c5d1abf7d25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] [stdout] a9109ae06ba862349e0199ab83e4e49aab12d037ed23ce5cbf00758ce15b9d47
[INFO] running `Command { std: "docker" "start" "-a" "a9109ae06ba862349e0199ab83e4e49aab12d037ed23ce5cbf00758ce15b9d47", kill_on_drop: false }`
[INFO] [stderr]    Compiling user_stable_vtable v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "a9109ae06ba862349e0199ab83e4e49aab12d037ed23ce5cbf00758ce15b9d47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9109ae06ba862349e0199ab83e4e49aab12d037ed23ce5cbf00758ce15b9d47", kill_on_drop: false }`
[INFO] [stdout] a9109ae06ba862349e0199ab83e4e49aab12d037ed23ce5cbf00758ce15b9d47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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] 3bd8e88e8129076088d9374796417f8f93e121409377becaf43f0c3f48079391
[INFO] running `Command { std: "docker" "start" "-a" "3bd8e88e8129076088d9374796417f8f93e121409377becaf43f0c3f48079391", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/user_stable_vtable-3d4ce9b51bc0139f)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test some_tests::test_nonnull_none_is_null ... ok
[INFO] [stdout] test some_tests::test_ref_none_is_null ... ok
[INFO] [stdout] test some_tests::test_ref_some_is_not_null - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests user_stable_vtable
[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" "3bd8e88e8129076088d9374796417f8f93e121409377becaf43f0c3f48079391", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bd8e88e8129076088d9374796417f8f93e121409377becaf43f0c3f48079391", kill_on_drop: false }`
[INFO] [stdout] 3bd8e88e8129076088d9374796417f8f93e121409377becaf43f0c3f48079391