[INFO] cloning repository https://github.com/kyle-silver/yaml-grammar-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kyle-silver/yaml-grammar-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyle-silver%2Fyaml-grammar-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyle-silver%2Fyaml-grammar-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5103c0495301174002ab036ecd2a1c20ffd47b9
[INFO] checking kyle-silver/yaml-grammar-rs against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkyle-silver%2Fyaml-grammar-rs" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kyle-silver/yaml-grammar-rs on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kyle-silver/yaml-grammar-rs
[INFO] finished tweaking git repo https://github.com/kyle-silver/yaml-grammar-rs
[INFO] tweaked toml for git repo https://github.com/kyle-silver/yaml-grammar-rs written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/kyle-silver/yaml-grammar-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] 2e7167007c1f1b53e8c58d61e2f6bf37a727b13c79dae6c7dc3b31b35af23664
[INFO] running `Command { std: "docker" "start" "-a" "2e7167007c1f1b53e8c58d61e2f6bf37a727b13c79dae6c7dc3b31b35af23664", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e7167007c1f1b53e8c58d61e2f6bf37a727b13c79dae6c7dc3b31b35af23664", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e7167007c1f1b53e8c58d61e2f6bf37a727b13c79dae6c7dc3b31b35af23664", kill_on_drop: false }`
[INFO] [stdout] 2e7167007c1f1b53e8c58d61e2f6bf37a727b13c79dae6c7dc3b31b35af23664
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b9f18149b0d08a4950dd39b6860ec021739c6d47d78dcca4c03d9fb677fca3e
[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" "1b9f18149b0d08a4950dd39b6860ec021739c6d47d78dcca4c03d9fb677fca3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking thread_local v1.1.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]     Checking serde v1.0.119
[INFO] [stderr]     Checking serde_yaml v0.8.15
[INFO] [stderr]     Checking yaml-grammar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/num.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn new(field_name: &'a Value, constr: NumConstr<'a>, default: Option<&'a Number>) -> NumberConstraint<'a> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/num.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn new(field_name: &'a Value, constr: NumConstr<'a>, default: Option<&'a Number>) -> NumberConstraint<'a> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `from_file`
[INFO] [stdout]   --> tests/utils.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn from_file<T: DeserializeOwned>(file: &str) -> T {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.78s
[INFO] running `Command { std: "docker" "inspect" "1b9f18149b0d08a4950dd39b6860ec021739c6d47d78dcca4c03d9fb677fca3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b9f18149b0d08a4950dd39b6860ec021739c6d47d78dcca4c03d9fb677fca3e", kill_on_drop: false }`
[INFO] [stdout] 1b9f18149b0d08a4950dd39b6860ec021739c6d47d78dcca4c03d9fb677fca3e