[INFO] cloning repository https://github.com/dan-f/blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dan-f/blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdan-f%2Fblockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdan-f%2Fblockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d86b044e1da1625b51e69c1564b6c388c9c8834
[INFO] testing dan-f/blockchain against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdan-f%2Fblockchain" "/workspace/builds/worker-67/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-67/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dan-f/blockchain on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dan-f/blockchain
[INFO] finished tweaking git repo https://github.com/dan-f/blockchain
[INFO] tweaked toml for git repo https://github.com/dan-f/blockchain written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] crate git repo https://github.com/dan-f/blockchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0a88257634f0d8559441605dbe5c6f09e5aa1f7ba021c13f2efed03754d2456
[INFO] running `Command { std: "docker" "start" "-a" "c0a88257634f0d8559441605dbe5c6f09e5aa1f7ba021c13f2efed03754d2456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0a88257634f0d8559441605dbe5c6f09e5aa1f7ba021c13f2efed03754d2456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0a88257634f0d8559441605dbe5c6f09e5aa1f7ba021c13f2efed03754d2456", kill_on_drop: false }`
[INFO] [stdout] c0a88257634f0d8559441605dbe5c6f09e5aa1f7ba021c13f2efed03754d2456
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66d2550abfc9952a1baa80bccaf0045c3a54c17ae46737370c992be37921869d
[INFO] running `Command { std: "docker" "start" "-a" "66d2550abfc9952a1baa80bccaf0045c3a54c17ae46737370c992be37921869d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling openssl v0.10.10
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling openssl-sys v0.9.33
[INFO] [stderr]    Compiling bincode v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.66
[INFO] [stderr]    Compiling crypto-hash v0.3.1
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.81s
[INFO] running `Command { std: "docker" "inspect" "66d2550abfc9952a1baa80bccaf0045c3a54c17ae46737370c992be37921869d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66d2550abfc9952a1baa80bccaf0045c3a54c17ae46737370c992be37921869d", kill_on_drop: false }`
[INFO] [stdout] 66d2550abfc9952a1baa80bccaf0045c3a54c17ae46737370c992be37921869d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc845e1313521c06180970bd1a7c1c82c9c27135a0aefa3994d82557d6e793b5
[INFO] running `Command { std: "docker" "start" "-a" "fc845e1313521c06180970bd1a7c1c82c9c27135a0aefa3994d82557d6e793b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "fc845e1313521c06180970bd1a7c1c82c9c27135a0aefa3994d82557d6e793b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc845e1313521c06180970bd1a7c1c82c9c27135a0aefa3994d82557d6e793b5", kill_on_drop: false }`
[INFO] [stdout] fc845e1313521c06180970bd1a7c1c82c9c27135a0aefa3994d82557d6e793b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] aed9c0eb7eabd3c5f147a1b81ee0a28691979b84c81c8603b5b67ee280c1afd2
[INFO] running `Command { std: "docker" "start" "-a" "aed9c0eb7eabd3c5f147a1b81ee0a28691979b84c81c8603b5b67ee280c1afd2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/blockchain-b93edda8656230ad)
[INFO] [stdout] running 10 tests
[INFO] [stdout] test blockchain::tests::blockchain_will_not_add_block_with_unacceptable_proof_of_work ... ok
[INFO] [stdout] test block::tests::it_constructs_a_genesis_block ... ok
[INFO] [stdout] test blockchain::tests::blockchain_will_not_add_block_with_wrong_prev_hash ... ok
[INFO] [stdout] test blockchain::tests::new_blockchain_uses_genesis_block ... ok
[INFO] [stdout] test list::tests::list_is_a_stack ... ok
[INFO] [stdout] test list::tests::list_can_branch ... ok
[INFO] [stdout] test list::tests::list_has_a_length ... ok
[INFO] [stdout] test list::tests::new_list_is_empty ... ok
[INFO] [stdout] test blockchain::tests::blockchain_can_mine_block ... ok
[INFO] [stdout] test blockchain::tests::blockchain_can_add_block ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.67s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests blockchain
[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" "aed9c0eb7eabd3c5f147a1b81ee0a28691979b84c81c8603b5b67ee280c1afd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed9c0eb7eabd3c5f147a1b81ee0a28691979b84c81c8603b5b67ee280c1afd2", kill_on_drop: false }`
[INFO] [stdout] aed9c0eb7eabd3c5f147a1b81ee0a28691979b84c81c8603b5b67ee280c1afd2