[INFO] fetching crate learn_itor 0.1.0...
[INFO] testing learn_itor-0.1.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate learn_itor 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate learn_itor 0.1.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate learn_itor 0.1.0
[INFO] finished tweaking crates.io crate learn_itor 0.1.0
[INFO] tweaked toml for crates.io crate learn_itor 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate learn_itor 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 15fa37cb9db7ba62e1693d2c47c36ca73a3647e1694fdae7ea61ff157c4d0cdf
[INFO] running `"docker" "start" "-a" "15fa37cb9db7ba62e1693d2c47c36ca73a3647e1694fdae7ea61ff157c4d0cdf"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling learn_itor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/lib.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn new() -> Counter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `"docker" "inspect" "15fa37cb9db7ba62e1693d2c47c36ca73a3647e1694fdae7ea61ff157c4d0cdf"`
[INFO] running `"docker" "rm" "-f" "15fa37cb9db7ba62e1693d2c47c36ca73a3647e1694fdae7ea61ff157c4d0cdf"`
[INFO] [stdout] 15fa37cb9db7ba62e1693d2c47c36ca73a3647e1694fdae7ea61ff157c4d0cdf
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cb49bfda5a99537b502cce95910b2d66fdae94fef90e113aefc5b1cd2dda9b9a
[INFO] running `"docker" "start" "-a" "cb49bfda5a99537b502cce95910b2d66fdae94fef90e113aefc5b1cd2dda9b9a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling learn_itor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/lib.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn new() -> Counter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `"docker" "inspect" "cb49bfda5a99537b502cce95910b2d66fdae94fef90e113aefc5b1cd2dda9b9a"`
[INFO] running `"docker" "rm" "-f" "cb49bfda5a99537b502cce95910b2d66fdae94fef90e113aefc5b1cd2dda9b9a"`
[INFO] [stdout] cb49bfda5a99537b502cce95910b2d66fdae94fef90e113aefc5b1cd2dda9b9a
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 57c1fa9cc24a1092ead6b1d256b5ea8ac3de3e9a84e20ab42e5e62a6b1ee02e4
[INFO] running `"docker" "start" "-a" "57c1fa9cc24a1092ead6b1d256b5ea8ac3de3e9a84e20ab42e5e62a6b1ee02e4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/lib.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn new() -> Counter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/learn_itor-0a4aa377cb7dbc40
[INFO] [stdout] test calling_next_directly ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/learn_itor-d98438e1d1f6cbd1
[INFO] [stdout] test filters_by_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test iter_enum ... ok
[INFO] [stdout] test iter_enum_sum ... ok
[INFO] [stdout] test iter_map ... ok
[INFO] [stderr]    Doc-tests learn_itor
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - shoes_in_my_size (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "57c1fa9cc24a1092ead6b1d256b5ea8ac3de3e9a84e20ab42e5e62a6b1ee02e4"`
[INFO] running `"docker" "rm" "-f" "57c1fa9cc24a1092ead6b1d256b5ea8ac3de3e9a84e20ab42e5e62a6b1ee02e4"`
[INFO] [stdout] 57c1fa9cc24a1092ead6b1d256b5ea8ac3de3e9a84e20ab42e5e62a6b1ee02e4