[INFO] fetching crate natural_numbers 0.1.0...
[INFO] testing natural_numbers-0.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate natural_numbers 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate natural_numbers 0.1.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate natural_numbers 0.1.0
[INFO] finished tweaking crates.io crate natural_numbers 0.1.0
[INFO] tweaked toml for crates.io crate natural_numbers 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-06-03" "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] 3cd6b35874c824ff379231979120f453d630112a8cff60193eae2f5d6c7f335f
[INFO] running `"docker" "start" "-a" "3cd6b35874c824ff379231979120f453d630112a8cff60193eae2f5d6c7f335f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling natural_numbers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "3cd6b35874c824ff379231979120f453d630112a8cff60193eae2f5d6c7f335f"`
[INFO] running `"docker" "rm" "-f" "3cd6b35874c824ff379231979120f453d630112a8cff60193eae2f5d6c7f335f"`
[INFO] [stdout] 3cd6b35874c824ff379231979120f453d630112a8cff60193eae2f5d6c7f335f
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-06-03" "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] 1da71f130eaad415247267bd9eeeceb8e8a98aeb21db14e697c5d6a478b80bfe
[INFO] running `"docker" "start" "-a" "1da71f130eaad415247267bd9eeeceb8e8a98aeb21db14e697c5d6a478b80bfe"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling natural_numbers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `"docker" "inspect" "1da71f130eaad415247267bd9eeeceb8e8a98aeb21db14e697c5d6a478b80bfe"`
[INFO] running `"docker" "rm" "-f" "1da71f130eaad415247267bd9eeeceb8e8a98aeb21db14e697c5d6a478b80bfe"`
[INFO] [stdout] 1da71f130eaad415247267bd9eeeceb8e8a98aeb21db14e697c5d6a478b80bfe
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2020-06-03" "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] 42aaf62a80366d81c8ff0ae8ca9a1371023f5b6bccedbc4de85dc7f5e03acc17
[INFO] running `"docker" "start" "-a" "42aaf62a80366d81c8ff0ae8ca9a1371023f5b6bccedbc4de85dc7f5e03acc17"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/natural_numbers-df5aa22cc34cdde7
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/natural_numbers-9fe34335f0740502
[INFO] [stderr]    Doc-tests natural_numbers
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - Nat::value (line 12) ... ok
[INFO] [stdout] test src/lib.rs - Nat::wrap (line 22) ... ok
[INFO] [stdout] test src/lib.rs - Nat::succ (line 35) ... ok
[INFO] [stdout] test src/lib.rs - Nat::pred (line 44) ... ok
[INFO] [stdout] test src/lib.rs - Nat::add (line 59) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "42aaf62a80366d81c8ff0ae8ca9a1371023f5b6bccedbc4de85dc7f5e03acc17"`
[INFO] running `"docker" "rm" "-f" "42aaf62a80366d81c8ff0ae8ca9a1371023f5b6bccedbc4de85dc7f5e03acc17"`
[INFO] [stdout] 42aaf62a80366d81c8ff0ae8ca9a1371023f5b6bccedbc4de85dc7f5e03acc17