[INFO] fetching crate unstacked 0.1.2...
[INFO] testing unstacked-0.1.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate unstacked 0.1.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate unstacked 0.1.2
[INFO] finished tweaking crates.io crate unstacked 0.1.2
[INFO] tweaked toml for crates.io crate unstacked 0.1.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate unstacked 0.1.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unstacked 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed0946501edab0997335b561e53cc39ca107d6f0769ac2224201bbae493f24cd
[INFO] running `Command { std: "docker" "start" "-a" "ed0946501edab0997335b561e53cc39ca107d6f0769ac2224201bbae493f24cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed0946501edab0997335b561e53cc39ca107d6f0769ac2224201bbae493f24cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed0946501edab0997335b561e53cc39ca107d6f0769ac2224201bbae493f24cd", kill_on_drop: false }`
[INFO] [stdout] ed0946501edab0997335b561e53cc39ca107d6f0769ac2224201bbae493f24cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb08a790b2d05c7c68e1cd0043f7ec3a932a01011aed3cd99fe19fae735c9697
[INFO] running `Command { std: "docker" "start" "-a" "cb08a790b2d05c7c68e1cd0043f7ec3a932a01011aed3cd99fe19fae735c9697", kill_on_drop: false }`
[INFO] [stderr]    Compiling unstacked v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "cb08a790b2d05c7c68e1cd0043f7ec3a932a01011aed3cd99fe19fae735c9697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb08a790b2d05c7c68e1cd0043f7ec3a932a01011aed3cd99fe19fae735c9697", kill_on_drop: false }`
[INFO] [stdout] cb08a790b2d05c7c68e1cd0043f7ec3a932a01011aed3cd99fe19fae735c9697
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f37d3ddbcb2ed2e3299d7c98474734e3df9761ae769f8bbc6ed39c50977e437f
[INFO] running `Command { std: "docker" "start" "-a" "f37d3ddbcb2ed2e3299d7c98474734e3df9761ae769f8bbc6ed39c50977e437f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unstacked v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "f37d3ddbcb2ed2e3299d7c98474734e3df9761ae769f8bbc6ed39c50977e437f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f37d3ddbcb2ed2e3299d7c98474734e3df9761ae769f8bbc6ed39c50977e437f", kill_on_drop: false }`
[INFO] [stdout] f37d3ddbcb2ed2e3299d7c98474734e3df9761ae769f8bbc6ed39c50977e437f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f796dee859674231ba646e8a1bef690c167677c8ff1c9c9396902e017a7e4bef
[INFO] running `Command { std: "docker" "start" "-a" "f796dee859674231ba646e8a1bef690c167677c8ff1c9c9396902e017a7e4bef", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/unstacked-6eec246dc94945b5)
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test tests::test_clear ... ok
[INFO] [stdout] test tests::test_aba_problem_prevention ... ok
[INFO] [stdout] test tests::test_encode_decode ... ok
[INFO] [stdout] test tests::test_is_empty ... ok
[INFO] [stdout] test tests::test_len ... ok
[INFO] [stdout] test tests::test_multiple_pops_when_empty ... ok
[INFO] [stdout] test tests::test_peek ... ok
[INFO] [stdout] test tests::test_peek_and_modify ... ok
[INFO] [stdout] test tests::test_clear_concurrent ... ok
[INFO] [stdout] test tests::test_push_after_pop ... ok
[INFO] [stdout] test tests::test_new_stack_is_empty ... ok
[INFO] [stdout] test tests::test_push_and_pop_single_element ... ok
[INFO] [stdout] test tests::test_push_and_pop_with_custom_type ... ok
[INFO] [stdout] test tests::test_tagged_ptr_operations ... ok
[INFO] [stdout] test tests::test_concurrent_push ... ok
[INFO] [stdout] test tests::test_push_and_pop_multiple_elements ... ok
[INFO] [stdout] test tests::test_tag_increment_on_operations ... ok
[INFO] [stdout] test tests::test_concurrent_push_and_pop ... ok
[INFO] [stderr]    Doc-tests unstacked
[INFO] [stdout] test tests::test_peek_concurrent ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - Stack<T> (line 68) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.56s; merged doctests compilation took 0.55s
[INFO] running `Command { std: "docker" "inspect" "f796dee859674231ba646e8a1bef690c167677c8ff1c9c9396902e017a7e4bef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f796dee859674231ba646e8a1bef690c167677c8ff1c9c9396902e017a7e4bef", kill_on_drop: false }`
[INFO] [stdout] f796dee859674231ba646e8a1bef690c167677c8ff1c9c9396902e017a7e4bef