[INFO] updating cached repository https://github.com/ms-ati/experiment-differ
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 503c8fa126b0c700bd9f4c11d6aff9efe0633173
[INFO] checking ms-ati/experiment-differ against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fms-ati%2Fexperiment-differ" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ms-ati/experiment-differ on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ms-ati/experiment-differ
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/ms-ati/experiment-differ
[INFO] tweaked toml for git repo https://github.com/ms-ati/experiment-differ written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/ms-ati/experiment-differ already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] df8cb956b2ab2dea2414a01e1d83b68489b2336ea29a479f810cb7e02ac0092a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "df8cb956b2ab2dea2414a01e1d83b68489b2336ea29a479f810cb7e02ac0092a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling deunicode v0.4.3
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[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling pest_generator v2.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]    Compiling proc-macro-error v0.4.9
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.9
[INFO] [stderr]     Checking which v3.1.0
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]    Compiling derive_builder_core v0.5.0
[INFO] [stderr]    Compiling derive_builder v0.7.2
[INFO] [stderr]    Compiling structopt-derive v0.4.2
[INFO] [stderr]     Checking gherkin_rust v0.6.0
[INFO] [stderr]     Checking cucumber_rust v0.6.7
[INFO] [stderr]     Checking structopt v0.3.9
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking rkv v0.10.2
[INFO] [stderr]    Compiling validator v0.10.0
[INFO] [stderr]    Compiling jmespath v0.2.0 (https://github.com/jmespath/jmespath.rs#6a0b4c29)
[INFO] [stderr]    Compiling validator_derive v0.10.0
[INFO] [stderr]     Checking experiment-differ v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `CLIOptions`
[INFO] [stderr]   --> src/cli/opt.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub struct CLIOptions {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CLIOptions`
[INFO] [stderr]   --> src/cli/opt.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub struct CLIOptions {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/cli/opt.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn new(unvalidated: &UnvalidatedCLIOptions) -> Result<CLIOptions, ValidationErrors> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/cli/opt.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn new(unvalidated: &UnvalidatedCLIOptions) -> Result<CLIOptions, ValidationErrors> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 12s
[INFO] running `"docker" "inspect" "df8cb956b2ab2dea2414a01e1d83b68489b2336ea29a479f810cb7e02ac0092a"`
[INFO] running `"docker" "rm" "-f" "df8cb956b2ab2dea2414a01e1d83b68489b2336ea29a479f810cb7e02ac0092a"`
[INFO] [stdout] df8cb956b2ab2dea2414a01e1d83b68489b2336ea29a479f810cb7e02ac0092a