[INFO] fetching crate alternating-iter 0.3.1...
[INFO] testing alternating-iter-0.3.1 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate alternating-iter 0.3.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate alternating-iter 0.3.1
[INFO] finished tweaking crates.io crate alternating-iter 0.3.1
[INFO] tweaked toml for crates.io crate alternating-iter 0.3.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate alternating-iter 0.3.1 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 678d050e4e343efc3bb144c0c7dcb626ac0f39f4cf71ee4b366aaa734cdee74e
[INFO] running `Command { std: "docker" "start" "-a" "678d050e4e343efc3bb144c0c7dcb626ac0f39f4cf71ee4b366aaa734cdee74e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "678d050e4e343efc3bb144c0c7dcb626ac0f39f4cf71ee4b366aaa734cdee74e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "678d050e4e343efc3bb144c0c7dcb626ac0f39f4cf71ee4b366aaa734cdee74e", kill_on_drop: false }`
[INFO] [stdout] 678d050e4e343efc3bb144c0c7dcb626ac0f39f4cf71ee4b366aaa734cdee74e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f37e09d5776cb810a20c6ea77d829a4dbea21acc77f469349c854c432c78ec34
[INFO] running `Command { std: "docker" "start" "-a" "f37e09d5776cb810a20c6ea77d829a4dbea21acc77f469349c854c432c78ec34", kill_on_drop: false }`
[INFO] [stderr]    Compiling alternating-iter v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::iter`
[INFO] [stdout]  --> src/alternating.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::iter;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "f37e09d5776cb810a20c6ea77d829a4dbea21acc77f469349c854c432c78ec34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f37e09d5776cb810a20c6ea77d829a4dbea21acc77f469349c854c432c78ec34", kill_on_drop: false }`
[INFO] [stdout] f37e09d5776cb810a20c6ea77d829a4dbea21acc77f469349c854c432c78ec34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25175df845adb554f54206483eef02428a25516210441b47bc136e8d7cb30a21
[INFO] running `Command { std: "docker" "start" "-a" "25175df845adb554f54206483eef02428a25516210441b47bc136e8d7cb30a21", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `core::iter`
[INFO] [stdout]  --> src/alternating.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::iter;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling alternating-iter v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "25175df845adb554f54206483eef02428a25516210441b47bc136e8d7cb30a21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25175df845adb554f54206483eef02428a25516210441b47bc136e8d7cb30a21", kill_on_drop: false }`
[INFO] [stdout] 25175df845adb554f54206483eef02428a25516210441b47bc136e8d7cb30a21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 773f3bb97419863b88f8e57dc6bcd4f84d48111e928149dcfa4f9bcb8dcd775d
[INFO] running `Command { std: "docker" "start" "-a" "773f3bb97419863b88f8e57dc6bcd4f84d48111e928149dcfa4f9bcb8dcd775d", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `core::iter`
[INFO] [stderr]  --> src/alternating.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::iter;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `alternating-iter` (lib) generated 1 warning (run `cargo fix --lib -p alternating-iter` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/alternating_iter-868ccff792e9bd3e)
[INFO] [stdout] 
[INFO] [stdout] running 40 tests
[INFO] [stdout] test alternating::tests::different_lengths_1more ... ok
[INFO] [stdout] test alternating::tests::different_lengths_2more ... ok
[INFO] [stdout] test alternating::tests::one_empty_iterator ... ok
[INFO] [stdout] test alternating::tests::same_iterator ... ok
[INFO] [stdout] test alternating::tests::same_lengths ... ok
[INFO] [stdout] test alternating::tests::size_hint ... ok
[INFO] [stdout] test alternating::tests::size_hint_accurate ... ok
[INFO] [stdout] test alternating::tests::size_hint_both_unbounded ... ok
[INFO] [stdout] test alternating::tests::size_hint_bound_exceed_max ... ok
[INFO] [stdout] test alternating::tests::size_hint_bound_half_max_left ... ok
[INFO] [stdout] test alternating::tests::size_hint_bound_half_max_right ... ok
[INFO] [stdout] test alternating::tests::size_hint_unbounded_left ... ok
[INFO] [stdout] test alternating::tests::size_hint_unbounded_right ... ok
[INFO] [stdout] test alternating_all::tests::different_lengths ... ok
[INFO] [stdout] test alternating_all::tests::empty_iterators ... ok
[INFO] [stdout] test alternating::tests::empty_iterators ... ok
[INFO] [stdout] test alternating_all::tests::equal_lengths ... ok
[INFO] [stdout] test alternating_all::tests::one_empty_iterator ... ok
[INFO] [stdout] test alternating_all::tests::same_iterator ... ok
[INFO] [stdout] test alternating_all::tests::size_hint ... ok
[INFO] [stdout] test alternating_all::tests::size_hint_accurate ... ok
[INFO] [stdout] test alternating_all::tests::size_hint_bound_exactly_max ... ok
[INFO] [stdout] test alternating_all::tests::size_hint_unbounded_left ... ok
[INFO] [stdout] test alternating_all::tests::size_hint_unbounded_right ... ok
[INFO] [stdout] test alternating_no_remainder::tests::empty_iterators ... ok
[INFO] [stdout] test alternating_no_remainder::tests::is_fused ... ok
[INFO] [stdout] test alternating_all::tests::size_hint_bound_exceed_max ... ok
[INFO] [stdout] test alternating_no_remainder::tests::different_lengths_1more ... ok
[INFO] [stdout] test alternating_no_remainder::tests::different_lengths_2more ... ok
[INFO] [stdout] test alternating_no_remainder::tests::one_empty_iterator ... ok
[INFO] [stdout] test alternating_no_remainder::tests::same_iterator ... ok
[INFO] [stdout] test alternating_no_remainder::tests::same_lengths ... ok
[INFO] [stdout] test alternating_no_remainder::tests::size_hint_accurate ... ok
[INFO] [stdout] test alternating_no_remainder::tests::size_hint_both_unbounded ... ok
[INFO] [stdout] test alternating_no_remainder::tests::size_hint_bound_exceed_max ... ok
[INFO] [stdout] test alternating_no_remainder::tests::size_hint ... ok
[INFO] [stdout] test alternating_no_remainder::tests::size_hint_bound_half_max_left ... ok
[INFO] [stdout] test alternating_no_remainder::tests::size_hint_bound_half_max_right ... ok
[INFO] [stdout] test alternating_no_remainder::tests::size_hint_unbounded_left ... ok
[INFO] [stdout] test alternating_no_remainder::tests::size_hint_unbounded_right ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 40 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests alternating_iter
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - (line 9) - compile ... ok
[INFO] [stdout] test src/lib.rs - AlternatingExt::alternate_with_no_remainder (line 116) ... ok
[INFO] [stdout] test src/lib.rs - AlternatingExt::alternate_with (line 31) ... ok
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] test src/lib.rs - (line 37) ... ok
[INFO] [stdout] test src/lib.rs - AlternatingExt::alternate_with_no_remainder (line 100) ... ok
[INFO] [stdout] test src/lib.rs - (line 58) ... ok
[INFO] [stdout] test src/lib.rs - AlternatingExt::alternate_with_all (line 66) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "773f3bb97419863b88f8e57dc6bcd4f84d48111e928149dcfa4f9bcb8dcd775d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "773f3bb97419863b88f8e57dc6bcd4f84d48111e928149dcfa4f9bcb8dcd775d", kill_on_drop: false }`
[INFO] [stdout] 773f3bb97419863b88f8e57dc6bcd4f84d48111e928149dcfa4f9bcb8dcd775d