[INFO] updating cached repository https://github.com/seungha-kim/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d68a9bf554865f68025307033b6466798698d7d
[INFO] testing seungha-kim/rust-practice against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseungha-kim%2Frust-practice" "/workspace/builds/worker-46/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-46/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/seungha-kim/rust-practice 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/seungha-kim/rust-practice
[INFO] finished tweaking git repo https://github.com/seungha-kim/rust-practice
[INFO] tweaked toml for git repo https://github.com/seungha-kim/rust-practice written to /workspace/builds/worker-46/source/Cargo.toml
[INFO] crate git repo https://github.com/seungha-kim/rust-practice 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-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] c3ed877e39214267cb0fbc5c8fcbcfbc84fe87221644384ba554b33a6115b498
[INFO] running `Command { std: "docker" "start" "-a" "c3ed877e39214267cb0fbc5c8fcbcfbc84fe87221644384ba554b33a6115b498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3ed877e39214267cb0fbc5c8fcbcfbc84fe87221644384ba554b33a6115b498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ed877e39214267cb0fbc5c8fcbcfbc84fe87221644384ba554b33a6115b498", kill_on_drop: false }`
[INFO] [stdout] c3ed877e39214267cb0fbc5c8fcbcfbc84fe87221644384ba554b33a6115b498
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] 0c240fbbbe3924511016c826e836fce5d82273d123099ae70cd810d426ba9ee8
[INFO] running `Command { std: "docker" "start" "-a" "0c240fbbbe3924511016c826e836fce5d82273d123099ae70cd810d426ba9ee8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling snakehead v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `num`
[INFO] [stdout]  --> src/copy/copy.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   num: u32,
[INFO] [stdout]   |   ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.86s
[INFO] running `Command { std: "docker" "inspect" "0c240fbbbe3924511016c826e836fce5d82273d123099ae70cd810d426ba9ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c240fbbbe3924511016c826e836fce5d82273d123099ae70cd810d426ba9ee8", kill_on_drop: false }`
[INFO] [stdout] 0c240fbbbe3924511016c826e836fce5d82273d123099ae70cd810d426ba9ee8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] 662f9a0670104a898c122fafac742916d145fb6591e9ad033fa8cd5004fc4233
[INFO] running `Command { std: "docker" "start" "-a" "662f9a0670104a898c122fafac742916d145fb6591e9ad033fa8cd5004fc4233", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling snakehead v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `num`
[INFO] [stdout]  --> src/copy/copy.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   num: u32,
[INFO] [stdout]   |   ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `num`
[INFO] [stdout]  --> src/copy/copy.rs:4:3
[INFO] [stdout]   |
[INFO] [stdout] 4 |   num: u32,
[INFO] [stdout]   |   ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 8.95s
[INFO] running `Command { std: "docker" "inspect" "662f9a0670104a898c122fafac742916d145fb6591e9ad033fa8cd5004fc4233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "662f9a0670104a898c122fafac742916d145fb6591e9ad033fa8cd5004fc4233", kill_on_drop: false }`
[INFO] [stdout] 662f9a0670104a898c122fafac742916d145fb6591e9ad033fa8cd5004fc4233
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] ab7930fee89f2a113fd1c80a8e4cc34c95e20c69bedf29b863cea2743013f19c
[INFO] running `Command { std: "docker" "start" "-a" "ab7930fee89f2a113fd1c80a8e4cc34c95e20c69bedf29b863cea2743013f19c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: field is never read: `num`
[INFO] [stderr]  --> src/copy/copy.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   num: u32,
[INFO] [stderr]   |   ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `snakehead` (lib) generated 1 warning
[INFO] [stderr] warning: `snakehead` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/snakehead-08ad3c27282fb762)
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test closure::mutandonce::tests::capture_test ... ok
[INFO] [stdout] test closure::mutandonce::tests::memo ... ok
[INFO] [stdout] test closure::mutandonce::tests::memo_copy_works ... ok
[INFO] [stdout] test closure::mutandonce::tests::memo_drop_works1 ... ok
[INFO] [stdout] test closure::mutandonce::tests::memo_drop_works2 ... ok
[INFO] [stdout] test closure::mutandonce::tests::works2 ... ok
[INFO] [stdout] test collections::string::tests::string_plus ... ok
[INFO] [stdout] test collections::vec::tests::add_works ... ok
[INFO] [stdout] test closure::mutandonce::tests::works ... ok
[INFO] [stdout] test collections::vec::tests::vec_get ... ok
[INFO] [stdout] test collections::vec::tests::vec_mut_el ... ok
[INFO] [stdout] test collections::vec::tests::vec_ownership ... ok
[INFO] [stdout] test copy::copy::tests::copy_works ... ok
[INFO] [stdout] test copy::copy::tests::drop_works ... ok
[INFO] [stdout] test copy::copy::tests::reference_is_copiable ... ok
[INFO] [stdout] test copy::copy::tests::reference_is_copiable2 ... ok
[INFO] [stdout] test lifetime::longest::tests::longest_workd ... ok
[INFO] [stdout] test smart::list::tests::list_works ... ok
[INFO] [stdout] test smart::tests::deref_coercion ... ok
[INFO] [stdout] test smart::tests::test ... ok
[INFO] [stdout] test traits::largest::tests::largest_ref_works ... ok
[INFO] [stdout] test traits::largest::tests::largest_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/snakehead-36fbf04ba03c0c6a)
[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] [stderr]    Doc-tests snakehead
[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" "ab7930fee89f2a113fd1c80a8e4cc34c95e20c69bedf29b863cea2743013f19c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab7930fee89f2a113fd1c80a8e4cc34c95e20c69bedf29b863cea2743013f19c", kill_on_drop: false }`
[INFO] [stdout] ab7930fee89f2a113fd1c80a8e4cc34c95e20c69bedf29b863cea2743013f19c