[INFO] fetching crate combination 0.1.5...
[INFO] testing combination-0.1.5 against 1.55.0 for beta-1.56-1
[INFO] extracting crate combination 0.1.5 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate combination 0.1.5 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate combination 0.1.5
[INFO] finished tweaking crates.io crate combination 0.1.5
[INFO] tweaked toml for crates.io crate combination 0.1.5 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29b8988dd866fadf63e89f286a7aca773c7071f28ce2de61a7b92220c1639cd0
[INFO] running `Command { std: "docker" "start" "-a" "29b8988dd866fadf63e89f286a7aca773c7071f28ce2de61a7b92220c1639cd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29b8988dd866fadf63e89f286a7aca773c7071f28ce2de61a7b92220c1639cd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29b8988dd866fadf63e89f286a7aca773c7071f28ce2de61a7b92220c1639cd0", kill_on_drop: false }`
[INFO] [stdout] 29b8988dd866fadf63e89f286a7aca773c7071f28ce2de61a7b92220c1639cd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db7d3b97b350672acc2e32b78b699b8e415453b0567e45f41cffc444e8b86474
[INFO] running `Command { std: "docker" "start" "-a" "db7d3b97b350672acc2e32b78b699b8e415453b0567e45f41cffc444e8b86474", kill_on_drop: false }`
[INFO] [stderr]    Compiling combination v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "db7d3b97b350672acc2e32b78b699b8e415453b0567e45f41cffc444e8b86474", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db7d3b97b350672acc2e32b78b699b8e415453b0567e45f41cffc444e8b86474", kill_on_drop: false }`
[INFO] [stdout] db7d3b97b350672acc2e32b78b699b8e415453b0567e45f41cffc444e8b86474
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 731b7ff6e9817fe0dc1c8f9d97d5f3cd6b8ecf2644a1f2a39a7b426d3805e174
[INFO] running `Command { std: "docker" "start" "-a" "731b7ff6e9817fe0dc1c8f9d97d5f3cd6b8ecf2644a1f2a39a7b426d3805e174", 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] [stderr]    Compiling combination v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "731b7ff6e9817fe0dc1c8f9d97d5f3cd6b8ecf2644a1f2a39a7b426d3805e174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "731b7ff6e9817fe0dc1c8f9d97d5f3cd6b8ecf2644a1f2a39a7b426d3805e174", kill_on_drop: false }`
[INFO] [stdout] 731b7ff6e9817fe0dc1c8f9d97d5f3cd6b8ecf2644a1f2a39a7b426d3805e174
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e81eb5cca2fb51a6a8164556da084c1ef4091c804dd8891a0a9ae2788ddf1367
[INFO] running `Command { std: "docker" "start" "-a" "e81eb5cca2fb51a6a8164556da084c1ef4091c804dd8891a0a9ae2788ddf1367", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/combination-42c118e1ee16168e)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::test_combine ... ok
[INFO] [stdout] test test::test_permutation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests combination
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/combine.rs - combine::from_vec (line 77) ... FAILED
[INFO] [stdout] test src/combine.rs - combine::from_vec_at (line 47) ... FAILED
[INFO] [stdout] test src/permutate.rs - permutate::from_vec (line 34) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 4) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/combine.rs - combine::from_vec (line 77) stdout ----
[INFO] [stdout] error[E0425]: cannot find function `combine_all` in this scope
[INFO] [stdout]  --> src/combine.rs:79:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | let val = combine_all(&vec![10, 20, 30]);
[INFO] [stdout]   |           ^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/combine.rs - combine::from_vec_at (line 47) stdout ----
[INFO] [stdout] error[E0423]: expected function, found module `combine`
[INFO] [stdout]  --> src/combine.rs:49:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | let val = combine(&vec![10, 20, 30, 40], 2);
[INFO] [stdout]   |           ^^^^^^^ not a function
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/permutate.rs - permutate::from_vec (line 34) stdout ----
[INFO] [stdout] error[E0423]: expected function, found module `permutate`
[INFO] [stdout]  --> src/permutate.rs:36:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | let val = permutate(&vec![10, 20, 30, 40]);
[INFO] [stdout]   |           ^^^^^^^^^ not a function
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 4) stdout ----
[INFO] [stdout] error[E0423]: expected function, found module `permutate`
[INFO] [stdout]  --> src/lib.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let val = permutate(&vec![10, 20, 30, 40]);
[INFO] [stdout]   |               ^^^^^^^^^ not a function
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/combine.rs - combine::from_vec (line 77)
[INFO] [stdout]     src/combine.rs - combine::from_vec_at (line 47)
[INFO] [stdout]     src/lib.rs - (line 4)
[INFO] [stdout]     src/permutate.rs - permutate::from_vec (line 34)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "e81eb5cca2fb51a6a8164556da084c1ef4091c804dd8891a0a9ae2788ddf1367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e81eb5cca2fb51a6a8164556da084c1ef4091c804dd8891a0a9ae2788ddf1367", kill_on_drop: false }`
[INFO] [stdout] e81eb5cca2fb51a6a8164556da084c1ef4091c804dd8891a0a9ae2788ddf1367