[INFO] fetching crate round_robin 0.1.31...
[INFO] testing round_robin-0.1.31 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate round_robin 0.1.31 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate round_robin 0.1.31 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate round_robin 0.1.31
[INFO] finished tweaking crates.io crate round_robin 0.1.31
[INFO] tweaked toml for crates.io crate round_robin 0.1.31 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef93e8a5fa1f6fb2a75cf0e772ebb9018862bfc0dd41be322be14f36f106996c
[INFO] running `Command { std: "docker" "start" "-a" "ef93e8a5fa1f6fb2a75cf0e772ebb9018862bfc0dd41be322be14f36f106996c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef93e8a5fa1f6fb2a75cf0e772ebb9018862bfc0dd41be322be14f36f106996c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef93e8a5fa1f6fb2a75cf0e772ebb9018862bfc0dd41be322be14f36f106996c", kill_on_drop: false }`
[INFO] [stdout] ef93e8a5fa1f6fb2a75cf0e772ebb9018862bfc0dd41be322be14f36f106996c
[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=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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c68329bcd683638a172923756a8b885f5136e2f350f68cca2b739a92848cc0b5
[INFO] running `Command { std: "docker" "start" "-a" "c68329bcd683638a172923756a8b885f5136e2f350f68cca2b739a92848cc0b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling round_robin v0.1.31 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "c68329bcd683638a172923756a8b885f5136e2f350f68cca2b739a92848cc0b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c68329bcd683638a172923756a8b885f5136e2f350f68cca2b739a92848cc0b5", kill_on_drop: false }`
[INFO] [stdout] c68329bcd683638a172923756a8b885f5136e2f350f68cca2b739a92848cc0b5
[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=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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68aa6b4aa3692f21dc73ab0f5c00e59ddbe88521013ced350fc2cacbf325b491
[INFO] running `Command { std: "docker" "start" "-a" "68aa6b4aa3692f21dc73ab0f5c00e59ddbe88521013ced350fc2cacbf325b491", kill_on_drop: false }`
[INFO] [stderr]    Compiling round_robin v0.1.31 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "68aa6b4aa3692f21dc73ab0f5c00e59ddbe88521013ced350fc2cacbf325b491", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68aa6b4aa3692f21dc73ab0f5c00e59ddbe88521013ced350fc2cacbf325b491", kill_on_drop: false }`
[INFO] [stdout] 68aa6b4aa3692f21dc73ab0f5c00e59ddbe88521013ced350fc2cacbf325b491
[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=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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fe6b457c2a66cff37ac9b4c92b3e9187fb4ddc32976ac59b85c5af81683ad9bf
[INFO] running `Command { std: "docker" "start" "-a" "fe6b457c2a66cff37ac9b4c92b3e9187fb4ddc32976ac59b85c5af81683ad9bf", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 4 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/round_robin-fc4ff3bf61bfe329)
[INFO] [stdout] test tests::first_round_has_first_versus_last ... ok
[INFO] [stdout] test tests::last_round_has_first_versus_second ... ok
[INFO] [stdout] test tests::count_of_rounds_equal_to_count_of_players_minus_1_or_double ... ok
[INFO] [stderr]    Doc-tests round_robin
[INFO] [stdout] test tests::does_not_accept_count_of_odd_players ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - round_robin (line 18) ... FAILED
[INFO] [stdout] test src/lib.rs - round_robin (line 11) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - round_robin (line 18) stdout ----
[INFO] [stdout] error[E0423]: expected function, found crate `round_robin`
[INFO] [stdout]  --> src/lib.rs:19:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | let rounds2 = round_robin(vec!["a", "b", "c", "d"], false);
[INFO] [stdout]   |               ^^^^^^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function instead
[INFO] [stdout]   |
[INFO] [stdout] 3 | use round_robin::round_robin;
[INFO] [stdout]   |
[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 - round_robin (line 11) stdout ----
[INFO] [stdout] error[E0423]: expected function, found crate `round_robin`
[INFO] [stdout]  --> src/lib.rs:12:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | let rounds1 = round_robin((1..= 4).collect(),false);
[INFO] [stdout]   |               ^^^^^^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function instead
[INFO] [stdout]   |
[INFO] [stdout] 3 | use round_robin::round_robin;
[INFO] [stdout]   |
[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/lib.rs - round_robin (line 11)
[INFO] [stdout]     src/lib.rs - round_robin (line 18)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "fe6b457c2a66cff37ac9b4c92b3e9187fb4ddc32976ac59b85c5af81683ad9bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe6b457c2a66cff37ac9b4c92b3e9187fb4ddc32976ac59b85c5af81683ad9bf", kill_on_drop: false }`
[INFO] [stdout] fe6b457c2a66cff37ac9b4c92b3e9187fb4ddc32976ac59b85c5af81683ad9bf