[INFO] fetching crate d2_iterators 0.1.0...
[INFO] testing d2_iterators-0.1.0 against 1.55.0 for beta-1.56-2
[INFO] extracting crate d2_iterators 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate d2_iterators 0.1.0 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 d2_iterators 0.1.0
[INFO] finished tweaking crates.io crate d2_iterators 0.1.0
[INFO] tweaked toml for crates.io crate d2_iterators 0.1.0 written to /workspace/builds/worker-1/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 11ef8887c52ae8110a25d017558120a4d66015ec802ba9db2d775e813c38f71e
[INFO] running `Command { std: "docker" "start" "-a" "11ef8887c52ae8110a25d017558120a4d66015ec802ba9db2d775e813c38f71e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11ef8887c52ae8110a25d017558120a4d66015ec802ba9db2d775e813c38f71e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11ef8887c52ae8110a25d017558120a4d66015ec802ba9db2d775e813c38f71e", kill_on_drop: false }`
[INFO] [stdout] 11ef8887c52ae8110a25d017558120a4d66015ec802ba9db2d775e813c38f71e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 7814e0f32eb97c6bc7edf3178febe442a7c790389789c5ed570e1dc753bf00b7
[INFO] running `Command { std: "docker" "start" "-a" "7814e0f32eb97c6bc7edf3178febe442a7c790389789c5ed570e1dc753bf00b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling d2_iterators v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.65s
[INFO] running `Command { std: "docker" "inspect" "7814e0f32eb97c6bc7edf3178febe442a7c790389789c5ed570e1dc753bf00b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7814e0f32eb97c6bc7edf3178febe442a7c790389789c5ed570e1dc753bf00b7", kill_on_drop: false }`
[INFO] [stdout] 7814e0f32eb97c6bc7edf3178febe442a7c790389789c5ed570e1dc753bf00b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 7fbd7bc1c9b7b47512066870affae3442ed79999f79e17557d31c94466c6bcfa
[INFO] running `Command { std: "docker" "start" "-a" "7fbd7bc1c9b7b47512066870affae3442ed79999f79e17557d31c94466c6bcfa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling d2_iterators v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stdout]   --> src/combi.rs:49:41
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let v: Vec<&str> = s.split(" ").intersperse(",").collect();
[INFO] [stdout]    |                                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stdout]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stdout]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stdout]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "7fbd7bc1c9b7b47512066870affae3442ed79999f79e17557d31c94466c6bcfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fbd7bc1c9b7b47512066870affae3442ed79999f79e17557d31c94466c6bcfa", kill_on_drop: false }`
[INFO] [stdout] 7fbd7bc1c9b7b47512066870affae3442ed79999f79e17557d31c94466c6bcfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 1845dd0d8248af74dd7f9dec9f7d1574b0b27faa8f683b59214bce55e07ea036
[INFO] running `Command { std: "docker" "start" "-a" "1845dd0d8248af74dd7f9dec9f7d1574b0b27faa8f683b59214bce55e07ea036", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: an associated function with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/combi.rs:49:41
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let v: Vec<&str> = s.split(" ").intersperse(",").collect();
[INFO] [stderr]    |                                         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unstable_name_collisions)]` on by default
[INFO] [stderr]    = warning: once this associated item is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `itertools::Itertools::intersperse(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr] warning: `d2_iterators` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/d2_iterators-99a1af99b5908b78)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test combi::test_skip::test_interleave ... ok
[INFO] [stdout] test combi::test_skip::test_intersperse ... ok
[INFO] [stdout] test combi::test_skip::test_skip_half ... ok
[INFO] [stdout] test combi::test_skip::test_step_by ... ok
[INFO] [stdout] test gen_range::tests::filter ... ok
[INFO] [stdout] test gen_range::tests::gen_test1 ... ok
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] test into::test_into::test_into_iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/d2_printout-8f07cd0542c7c70c)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests d2_iterators
[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] [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" "1845dd0d8248af74dd7f9dec9f7d1574b0b27faa8f683b59214bce55e07ea036", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1845dd0d8248af74dd7f9dec9f7d1574b0b27faa8f683b59214bce55e07ea036", kill_on_drop: false }`
[INFO] [stdout] 1845dd0d8248af74dd7f9dec9f7d1574b0b27faa8f683b59214bce55e07ea036