[INFO] cloning repository https://github.com/XDMAN500/Rust-RomanNumerals
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/XDMAN500/Rust-RomanNumerals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXDMAN500%2FRust-RomanNumerals"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXDMAN500%2FRust-RomanNumerals'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 88eb1d2a1dbe778b320b7a4595a44ae19b600d2f
[INFO] testing XDMAN500/Rust-RomanNumerals against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXDMAN500%2FRust-RomanNumerals" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/XDMAN500/Rust-RomanNumerals 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 git repo https://github.com/XDMAN500/Rust-RomanNumerals
[INFO] finished tweaking git repo https://github.com/XDMAN500/Rust-RomanNumerals
[INFO] tweaked toml for git repo https://github.com/XDMAN500/Rust-RomanNumerals written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/XDMAN500/Rust-RomanNumerals already has a lockfile, it will not be regenerated
[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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 18a3b0d2ce0ac5b5f030f138b90bbf0057b665e894ee16185639d4e1746ef8fa
[INFO] running `"docker" "start" "-a" "18a3b0d2ce0ac5b5f030f138b90bbf0057b665e894ee16185639d4e1746ef8fa"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling roman-numerals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: associated function is never used: `from_decimal`
[INFO] [stderr]   --> src/roman_numerals.rs:24:6
[INFO] [stderr]    |
[INFO] [stderr] 24 |         fn from_decimal<'a>(num: i32) -> Option<&'a RomanDigit> {
[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 0.81s
[INFO] running `"docker" "inspect" "18a3b0d2ce0ac5b5f030f138b90bbf0057b665e894ee16185639d4e1746ef8fa"`
[INFO] running `"docker" "rm" "-f" "18a3b0d2ce0ac5b5f030f138b90bbf0057b665e894ee16185639d4e1746ef8fa"`
[INFO] [stdout] 18a3b0d2ce0ac5b5f030f138b90bbf0057b665e894ee16185639d4e1746ef8fa
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 6d5c4101254cf244862648a4f6328eee1a0c75ca49e4d7c4cb80a6a19ee0ce39
[INFO] running `"docker" "start" "-a" "6d5c4101254cf244862648a4f6328eee1a0c75ca49e4d7c4cb80a6a19ee0ce39"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling roman-numerals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: associated function is never used: `from_decimal`
[INFO] [stderr]   --> src/roman_numerals.rs:24:6
[INFO] [stderr]    |
[INFO] [stderr] 24 |         fn from_decimal<'a>(num: i32) -> Option<&'a RomanDigit> {
[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 0.68s
[INFO] running `"docker" "inspect" "6d5c4101254cf244862648a4f6328eee1a0c75ca49e4d7c4cb80a6a19ee0ce39"`
[INFO] running `"docker" "rm" "-f" "6d5c4101254cf244862648a4f6328eee1a0c75ca49e4d7c4cb80a6a19ee0ce39"`
[INFO] [stdout] 6d5c4101254cf244862648a4f6328eee1a0c75ca49e4d7c4cb80a6a19ee0ce39
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 4560c6bf6b2334348db212c0bac10853b19f16a19f1a44b2747d85a0afd5a761
[INFO] running `"docker" "start" "-a" "4560c6bf6b2334348db212c0bac10853b19f16a19f1a44b2747d85a0afd5a761"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: associated function is never used: `from_decimal`
[INFO] [stderr]   --> src/roman_numerals.rs:24:6
[INFO] [stderr]    |
[INFO] [stderr] 24 |         fn from_decimal<'a>(num: i32) -> Option<&'a RomanDigit> {
[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 0.82s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/roman_numerals-3983e9155a03bb88
[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] running `"docker" "inspect" "4560c6bf6b2334348db212c0bac10853b19f16a19f1a44b2747d85a0afd5a761"`
[INFO] running `"docker" "rm" "-f" "4560c6bf6b2334348db212c0bac10853b19f16a19f1a44b2747d85a0afd5a761"`
[INFO] [stdout] 4560c6bf6b2334348db212c0bac10853b19f16a19f1a44b2747d85a0afd5a761