[INFO] fetching crate iter_from_fn 1.0.0...
[INFO] testing iter_from_fn-1.0.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate iter_from_fn 1.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate iter_from_fn 1.0.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iter_from_fn 1.0.0
[INFO] finished tweaking crates.io crate iter_from_fn 1.0.0
[INFO] tweaked toml for crates.io crate iter_from_fn 1.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7620934f2f4d04cf76e4c83f5132ed5452fffd2fc970c93789a13c704ef4199c
[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" "7620934f2f4d04cf76e4c83f5132ed5452fffd2fc970c93789a13c704ef4199c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7620934f2f4d04cf76e4c83f5132ed5452fffd2fc970c93789a13c704ef4199c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7620934f2f4d04cf76e4c83f5132ed5452fffd2fc970c93789a13c704ef4199c", kill_on_drop: false }`
[INFO] [stdout] 7620934f2f4d04cf76e4c83f5132ed5452fffd2fc970c93789a13c704ef4199c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 3c807abd9c42ff0399195f0cdff9bb3c4c68e7b5b81c4476c0a0ddbaa83f4401
[INFO] running `Command { std: "docker" "start" "-a" "3c807abd9c42ff0399195f0cdff9bb3c4c68e7b5b81c4476c0a0ddbaa83f4401", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter_from_fn v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "3c807abd9c42ff0399195f0cdff9bb3c4c68e7b5b81c4476c0a0ddbaa83f4401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c807abd9c42ff0399195f0cdff9bb3c4c68e7b5b81c4476c0a0ddbaa83f4401", kill_on_drop: false }`
[INFO] [stdout] 3c807abd9c42ff0399195f0cdff9bb3c4c68e7b5b81c4476c0a0ddbaa83f4401
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80aec45921a95e6c3e65da73ffbeebddcb3060e45e2937efb12d7b60a1da4568
[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" "80aec45921a95e6c3e65da73ffbeebddcb3060e45e2937efb12d7b60a1da4568", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter_from_fn v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "80aec45921a95e6c3e65da73ffbeebddcb3060e45e2937efb12d7b60a1da4568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80aec45921a95e6c3e65da73ffbeebddcb3060e45e2937efb12d7b60a1da4568", kill_on_drop: false }`
[INFO] [stdout] 80aec45921a95e6c3e65da73ffbeebddcb3060e45e2937efb12d7b60a1da4568
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 19af84be8b906e8c6620170d9d016f4c9d572295cf3a5380d6baadeb7a8beb43
[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" "19af84be8b906e8c6620170d9d016f4c9d572295cf3a5380d6baadeb7a8beb43", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/iter_from_fn-b0f8df513e822b70
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_inside_for ... ok
[INFO] [stdout] test tests::test_mutable ... ok
[INFO] [stdout] test tests::test_ones ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests iter_from_fn
[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" "19af84be8b906e8c6620170d9d016f4c9d572295cf3a5380d6baadeb7a8beb43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19af84be8b906e8c6620170d9d016f4c9d572295cf3a5380d6baadeb7a8beb43", kill_on_drop: false }`
[INFO] [stdout] 19af84be8b906e8c6620170d9d016f4c9d572295cf3a5380d6baadeb7a8beb43