[INFO] cloning repository https://github.com/illustriousivan/generic_stack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/illustriousivan/generic_stack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillustriousivan%2Fgeneric_stack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillustriousivan%2Fgeneric_stack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4f57de85b1d312eb1a72893ea03d74904857611
[INFO] testing illustriousivan/generic_stack against master#c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af for pr-154756
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillustriousivan%2Fgeneric_stack" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/illustriousivan/generic_stack
[INFO] finished tweaking git repo https://github.com/illustriousivan/generic_stack
[INFO] tweaked toml for git repo https://github.com/illustriousivan/generic_stack written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/illustriousivan/generic_stack on toolchain c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/illustriousivan/generic_stack 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" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab0ce6a89a6ce5053c762b0e60868736d7a533c4a3201e14c9e6391e3211dd23
[INFO] running `Command { std: "docker" "start" "-a" "ab0ce6a89a6ce5053c762b0e60868736d7a533c4a3201e14c9e6391e3211dd23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab0ce6a89a6ce5053c762b0e60868736d7a533c4a3201e14c9e6391e3211dd23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab0ce6a89a6ce5053c762b0e60868736d7a533c4a3201e14c9e6391e3211dd23", kill_on_drop: false }`
[INFO] [stdout] ab0ce6a89a6ce5053c762b0e60868736d7a533c4a3201e14c9e6391e3211dd23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 188bd0f204ffeba06127c2cf3d75db939ef22b0a8861c2da6d4eeed51dbf0d61
[INFO] running `Command { std: "docker" "start" "-a" "188bd0f204ffeba06127c2cf3d75db939ef22b0a8861c2da6d4eeed51dbf0d61", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic_stack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "188bd0f204ffeba06127c2cf3d75db939ef22b0a8861c2da6d4eeed51dbf0d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "188bd0f204ffeba06127c2cf3d75db939ef22b0a8861c2da6d4eeed51dbf0d61", kill_on_drop: false }`
[INFO] [stdout] 188bd0f204ffeba06127c2cf3d75db939ef22b0a8861c2da6d4eeed51dbf0d61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47c5e9c22dfb17d7cc305b221425b397c41efb3c59b7134941573dd46ef47b9f
[INFO] running `Command { std: "docker" "start" "-a" "47c5e9c22dfb17d7cc305b221425b397c41efb3c59b7134941573dd46ef47b9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic_stack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "47c5e9c22dfb17d7cc305b221425b397c41efb3c59b7134941573dd46ef47b9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47c5e9c22dfb17d7cc305b221425b397c41efb3c59b7134941573dd46ef47b9f", kill_on_drop: false }`
[INFO] [stdout] 47c5e9c22dfb17d7cc305b221425b397c41efb3c59b7134941573dd46ef47b9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c2efcc4ae006a6b2761cb42572fc9cee0d1ce4af" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d6a99acf8f9ab8d2515637250a420c378a0ac857d2573d242a624909e6a7d5bd
[INFO] running `Command { std: "docker" "start" "-a" "d6a99acf8f9ab8d2515637250a420c378a0ac857d2573d242a624909e6a7d5bd", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/generic_stack-26f9e4afc7b53c94)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test tests::new_create_empty_generic_stack ... ok
[INFO] [stdout] test tests::is_empty_return_true_when_zero_elements ... ok
[INFO] [stdout] test tests::iter_return_iterator_over_t_reference ... ok
[INFO] [stdout] test tests::peek_return_top_value_option_without_pop ... ok
[INFO] [stdout] test tests::pop_n_return_error_when_n_is_greater_than_len ... ok
[INFO] [stdout] test tests::pop_n_return_n_values_as_vec ... ok
[INFO] [stdout] test tests::push_and_pop_two_or_more_values ... ok
[INFO] [stdout] test tests::push_one_value_to_stack ... ok
[INFO] [stdout] test tests::push_two_or_more_values_to_stack ... ok
[INFO] [stdout] test tests::push_and_pop_one_value ... ok
[INFO] [stdout] test tests::pop_empty_stack_return_none ... ok
[INFO] [stdout] test tests::len_count_the_elements ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests generic_stack
[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" "d6a99acf8f9ab8d2515637250a420c378a0ac857d2573d242a624909e6a7d5bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6a99acf8f9ab8d2515637250a420c378a0ac857d2573d242a624909e6a7d5bd", kill_on_drop: false }`
[INFO] [stdout] d6a99acf8f9ab8d2515637250a420c378a0ac857d2573d242a624909e6a7d5bd