[INFO] fetching crate prev-iter 0.1.2...
[INFO] testing prev-iter-0.1.2 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate prev-iter 0.1.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate prev-iter 0.1.2 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prev-iter 0.1.2
[INFO] finished tweaking crates.io crate prev-iter 0.1.2
[INFO] tweaked toml for crates.io crate prev-iter 0.1.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f80b393f4e9f6fa3b06673d0aa5d0f050f3a751a3218c09acbbaa2737b952d65
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f80b393f4e9f6fa3b06673d0aa5d0f050f3a751a3218c09acbbaa2737b952d65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f80b393f4e9f6fa3b06673d0aa5d0f050f3a751a3218c09acbbaa2737b952d65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f80b393f4e9f6fa3b06673d0aa5d0f050f3a751a3218c09acbbaa2737b952d65", kill_on_drop: false }`
[INFO] [stdout] f80b393f4e9f6fa3b06673d0aa5d0f050f3a751a3218c09acbbaa2737b952d65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a6f2e6a533704dbd5f60c910adc8b343bfc6ab83e26275938bcd465b68d47c81
[INFO] running `Command { std: "docker" "start" "-a" "a6f2e6a533704dbd5f60c910adc8b343bfc6ab83e26275938bcd465b68d47c81", kill_on_drop: false }`
[INFO] [stderr]    Compiling prev-iter v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "a6f2e6a533704dbd5f60c910adc8b343bfc6ab83e26275938bcd465b68d47c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6f2e6a533704dbd5f60c910adc8b343bfc6ab83e26275938bcd465b68d47c81", kill_on_drop: false }`
[INFO] [stdout] a6f2e6a533704dbd5f60c910adc8b343bfc6ab83e26275938bcd465b68d47c81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4583c60a114c063367e4b34041ed88bf558e6838c7bb5c9dc1f24db9c272e51
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e4583c60a114c063367e4b34041ed88bf558e6838c7bb5c9dc1f24db9c272e51", kill_on_drop: false }`
[INFO] [stderr]    Compiling prev-iter v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "e4583c60a114c063367e4b34041ed88bf558e6838c7bb5c9dc1f24db9c272e51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4583c60a114c063367e4b34041ed88bf558e6838c7bb5c9dc1f24db9c272e51", kill_on_drop: false }`
[INFO] [stdout] e4583c60a114c063367e4b34041ed88bf558e6838c7bb5c9dc1f24db9c272e51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 703132248de4c4dc2cd5bf87cc1a8932edad5bc455b839f1b1285f5faa6edc4d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "703132248de4c4dc2cd5bf87cc1a8932edad5bc455b839f1b1285f5faa6edc4d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prev_iter-8d54557bc15b0b25)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_prev ... ok
[INFO] [stdout] test tests::test_peek ... ok
[INFO] [stdout] test tests::test_prev_peek ... ok
[INFO] [stdout] test tests::test_next ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prev-iter
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - PrevPeekable<I>::prev (line 110) ... ok
[INFO] [stdout] test src/lib.rs - PrevPeekable<I>::prev_peek (line 148) ... ok
[INFO] [stdout] test src/lib.rs - PrevPeekable<I>::new (line 41) ... ok
[INFO] [stdout] test src/lib.rs - PrevPeekable<I>::peek (line 76) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.60s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "703132248de4c4dc2cd5bf87cc1a8932edad5bc455b839f1b1285f5faa6edc4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "703132248de4c4dc2cd5bf87cc1a8932edad5bc455b839f1b1285f5faa6edc4d", kill_on_drop: false }`
[INFO] [stdout] 703132248de4c4dc2cd5bf87cc1a8932edad5bc455b839f1b1285f5faa6edc4d