[INFO] fetching crate iterware 0.1.0...
[INFO] testing iterware-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate iterware 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate iterware 0.1.0 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 iterware 0.1.0
[INFO] finished tweaking crates.io crate iterware 0.1.0
[INFO] tweaked toml for crates.io crate iterware 0.1.0 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 68de2c0f3a98ab46d04dd57e9f4d8250b35f236bf6a441f72d02615f860d951d
[INFO] running `Command { std: "docker" "start" "-a" "68de2c0f3a98ab46d04dd57e9f4d8250b35f236bf6a441f72d02615f860d951d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68de2c0f3a98ab46d04dd57e9f4d8250b35f236bf6a441f72d02615f860d951d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68de2c0f3a98ab46d04dd57e9f4d8250b35f236bf6a441f72d02615f860d951d", kill_on_drop: false }`
[INFO] [stdout] 68de2c0f3a98ab46d04dd57e9f4d8250b35f236bf6a441f72d02615f860d951d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] be7305879daf3c70941054882db317c6149d9b39115dfab20ef81839df5f0f4d
[INFO] running `Command { std: "docker" "start" "-a" "be7305879daf3c70941054882db317c6149d9b39115dfab20ef81839df5f0f4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling iterware v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "be7305879daf3c70941054882db317c6149d9b39115dfab20ef81839df5f0f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be7305879daf3c70941054882db317c6149d9b39115dfab20ef81839df5f0f4d", kill_on_drop: false }`
[INFO] [stdout] be7305879daf3c70941054882db317c6149d9b39115dfab20ef81839df5f0f4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] ea6d03a9bdeb02c07f342a0346e776dd28fb4d63eafa7449eb33eda84e6c8415
[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" "ea6d03a9bdeb02c07f342a0346e776dd28fb4d63eafa7449eb33eda84e6c8415", kill_on_drop: false }`
[INFO] [stderr]    Compiling iterware v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "ea6d03a9bdeb02c07f342a0346e776dd28fb4d63eafa7449eb33eda84e6c8415", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea6d03a9bdeb02c07f342a0346e776dd28fb4d63eafa7449eb33eda84e6c8415", kill_on_drop: false }`
[INFO] [stdout] ea6d03a9bdeb02c07f342a0346e776dd28fb4d63eafa7449eb33eda84e6c8415
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] c7e6db0ab54f605d5d149987d27630ae4667a20f72e28e5ae76021818d0a8fd2
[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" "c7e6db0ab54f605d5d149987d27630ae4667a20f72e28e5ae76021818d0a8fd2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/iterware-91a5ea77678640a6
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests iterware
[INFO] [stdout] test tests::test_borrow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - IteratorMiddleware::middleware (line 32) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.49s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c7e6db0ab54f605d5d149987d27630ae4667a20f72e28e5ae76021818d0a8fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7e6db0ab54f605d5d149987d27630ae4667a20f72e28e5ae76021818d0a8fd2", kill_on_drop: false }`
[INFO] [stdout] c7e6db0ab54f605d5d149987d27630ae4667a20f72e28e5ae76021818d0a8fd2