[INFO] cloning repository https://github.com/dcao/babble
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dcao/babble" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcao%2Fbabble", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcao%2Fbabble'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93da70bed4213041699e19ffe1d325458439e3bf
[INFO] checking dcao/babble against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcao%2Fbabble" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dcao/babble on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dcao/babble
[INFO] finished tweaking git repo https://github.com/dcao/babble
[INFO] tweaked toml for git repo https://github.com/dcao/babble written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/dcao/babble already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded symbolic_expressions v5.0.3
[INFO] [stderr]   Downloaded egg v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "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] c52f5930d5a185fe00dd8b67158f7da4efe38cdf425b7dae7ddccef1c3c5f2b6
[INFO] running `Command { std: "docker" "start" "-a" "c52f5930d5a185fe00dd8b67158f7da4efe38cdf425b7dae7ddccef1c3c5f2b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c52f5930d5a185fe00dd8b67158f7da4efe38cdf425b7dae7ddccef1c3c5f2b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c52f5930d5a185fe00dd8b67158f7da4efe38cdf425b7dae7ddccef1c3c5f2b6", kill_on_drop: false }`
[INFO] [stdout] c52f5930d5a185fe00dd8b67158f7da4efe38cdf425b7dae7ddccef1c3c5f2b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bae0bd70a364658808efaaf8db805a2a996007a1df1dbb2139ef23790a62ddfe
[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" "bae0bd70a364658808efaaf8db805a2a996007a1df1dbb2139ef23790a62ddfe", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]     Checking symbolic_expressions v5.0.3
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking egg v0.6.0
[INFO] [stderr]     Checking ordered-float v2.1.1
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking babble v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `test_anti_unif_rules`
[INFO] [stdout]   --> src/smiley_lang.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn test_anti_unif_rules() -> Vec<Rewrite> {
[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: `test_anti_unif_rules`
[INFO] [stdout]   --> src/smiley_lang.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn test_anti_unif_rules() -> Vec<Rewrite> {
[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 35.79s
[INFO] running `Command { std: "docker" "inspect" "bae0bd70a364658808efaaf8db805a2a996007a1df1dbb2139ef23790a62ddfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bae0bd70a364658808efaaf8db805a2a996007a1df1dbb2139ef23790a62ddfe", kill_on_drop: false }`
[INFO] [stdout] bae0bd70a364658808efaaf8db805a2a996007a1df1dbb2139ef23790a62ddfe