[INFO] cloning repository https://github.com/michaelrevans/roman_numerals
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/michaelrevans/roman_numerals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelrevans%2Froman_numerals", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelrevans%2Froman_numerals'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7260b4317700f2ffea8d85a330b3ad91058468e5
[INFO] testing michaelrevans/roman_numerals against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaelrevans%2Froman_numerals" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/michaelrevans/roman_numerals on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/michaelrevans/roman_numerals
[INFO] finished tweaking git repo https://github.com/michaelrevans/roman_numerals
[INFO] tweaked toml for git repo https://github.com/michaelrevans/roman_numerals written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/michaelrevans/roman_numerals already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79f5445a8c08556c1890a922500595ca28efe3ab738e82d0540c2409d3dc0efe
[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" "79f5445a8c08556c1890a922500595ca28efe3ab738e82d0540c2409d3dc0efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79f5445a8c08556c1890a922500595ca28efe3ab738e82d0540c2409d3dc0efe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79f5445a8c08556c1890a922500595ca28efe3ab738e82d0540c2409d3dc0efe", kill_on_drop: false }`
[INFO] [stdout] 79f5445a8c08556c1890a922500595ca28efe3ab738e82d0540c2409d3dc0efe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d97e4042a97f543490b54cac18fc626cdf20578db6aca0cb9aea847465dbc11a
[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" "d97e4042a97f543490b54cac18fc626cdf20578db6aca0cb9aea847465dbc11a", kill_on_drop: false }`
[INFO] [stderr]    Compiling roman-numerals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `get_numerals`
[INFO] [stdout]  --> src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn get_numerals(level: &i32) -> HashMap<i32, String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `roman_numerals`
[INFO] [stdout]   --> src/lib.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn roman_numerals(int: i32, level: i32) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "d97e4042a97f543490b54cac18fc626cdf20578db6aca0cb9aea847465dbc11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d97e4042a97f543490b54cac18fc626cdf20578db6aca0cb9aea847465dbc11a", kill_on_drop: false }`
[INFO] [stdout] d97e4042a97f543490b54cac18fc626cdf20578db6aca0cb9aea847465dbc11a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74f6143ca158ba21a3fe1ab236189f158ec00aa16a06558f35b29ea2a9264dda
[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" "74f6143ca158ba21a3fe1ab236189f158ec00aa16a06558f35b29ea2a9264dda", kill_on_drop: false }`
[INFO] [stdout] warning: function is never used: `get_numerals`
[INFO] [stdout]  --> src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn get_numerals(level: &i32) -> HashMap<i32, String> {
[INFO] [stdout]   |    ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling roman-numerals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `roman_numerals`
[INFO] [stdout]   --> src/lib.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn roman_numerals(int: i32, level: i32) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "74f6143ca158ba21a3fe1ab236189f158ec00aa16a06558f35b29ea2a9264dda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74f6143ca158ba21a3fe1ab236189f158ec00aa16a06558f35b29ea2a9264dda", kill_on_drop: false }`
[INFO] [stdout] 74f6143ca158ba21a3fe1ab236189f158ec00aa16a06558f35b29ea2a9264dda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 62a58c0248f4a62f014228ead3278cb0bb6c4bf5585bdc74072a657744e6e8e0
[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" "62a58c0248f4a62f014228ead3278cb0bb6c4bf5585bdc74072a657744e6e8e0", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `get_numerals`
[INFO] [stdout] running 27 tests
[INFO] [stderr]  --> src/lib.rs:3:4
[INFO] [stdout] test tests::it_renders_fifty ... ok
[INFO] [stderr]   |
[INFO] [stdout] test tests::it_renders_fifteen ... ok
[INFO] [stderr] 3 | fn get_numerals(level: &i32) -> HashMap<i32, String> {
[INFO] [stdout] test tests::it_renders_fifty_seven ... ok
[INFO] [stderr]   |    ^^^^^^^^^^^^
[INFO] [stdout] test tests::it_renders_five ... ok
[INFO] [stderr]   |
[INFO] [stdout] test tests::it_renders_four ... ok
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] test tests::it_renders_eleven ... ok
[INFO] [stderr] 
[INFO] [stdout] test tests::it_renders_forty_nine ... ok
[INFO] [stderr] warning: function is never used: `roman_numerals`
[INFO] [stdout] test tests::it_renders_forty ... ok
[INFO] [stderr]   --> src/lib.rs:37:4
[INFO] [stdout] test tests::it_renders_seven ... ok
[INFO] [stderr]    |
[INFO] [stdout] test tests::it_renders_nineteen ... ok
[INFO] [stderr] 37 | fn roman_numerals(int: i32, level: i32) -> String {
[INFO] [stdout] test tests::it_renders_six ... ok
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] test tests::it_renders_sixteen ... ok
[INFO] [stderr] 
[INFO] [stdout] test tests::it_renders_four_hundred_and_forty_seven ... ok
[INFO] [stderr] warning: `roman-numerals` (lib) generated 2 warnings
[INFO] [stdout] test tests::it_renders_sixty ... ok
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] test tests::it_renders_twenty ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/roman_numerals-3af7d56bc1d62035)
[INFO] [stdout] test tests::it_renders_nine_hundred_and_ninety_nine ... ok
[INFO] [stderr]    Doc-tests roman-numerals
[INFO] [stdout] test tests::it_renders_two ... ok
[INFO] [stdout] test tests::it_renders_twenty_one ... ok
[INFO] [stdout] test tests::it_renders_blank ... ok
[INFO] [stdout] test tests::it_renders_fourteen ... ok
[INFO] [stdout] test tests::it_renders_ninety_nine ... ok
[INFO] [stdout] test tests::it_renders_three ... ok
[INFO] [stdout] test tests::it_renders_nine ... ok
[INFO] [stdout] test tests::it_renders_one_hundred ... ok
[INFO] [stdout] test tests::it_renders_thirty ... ok
[INFO] [stdout] test tests::it_renders_one_thousand ... ok
[INFO] [stdout] test tests::it_renders_one ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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" "62a58c0248f4a62f014228ead3278cb0bb6c4bf5585bdc74072a657744e6e8e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62a58c0248f4a62f014228ead3278cb0bb6c4bf5585bdc74072a657744e6e8e0", kill_on_drop: false }`
[INFO] [stdout] 62a58c0248f4a62f014228ead3278cb0bb6c4bf5585bdc74072a657744e6e8e0