[INFO] cloning repository https://github.com/ifukazoo/json-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ifukazoo/json-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fifukazoo%2Fjson-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fifukazoo%2Fjson-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec7ef3de2009646ee022a2b38d1996c164638c60
[INFO] checking ifukazoo/json-parser against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fifukazoo%2Fjson-parser" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ifukazoo/json-parser on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ifukazoo/json-parser
[INFO] finished tweaking git repo https://github.com/ifukazoo/json-parser
[INFO] tweaked toml for git repo https://github.com/ifukazoo/json-parser written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ifukazoo/json-parser 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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stdout] ad8b143ff5d05c21ba6d31ee7bbce7d70a671feed37ab9b4c7293f342ddddfdc
[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" "ad8b143ff5d05c21ba6d31ee7bbce7d70a671feed37ab9b4c7293f342ddddfdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad8b143ff5d05c21ba6d31ee7bbce7d70a671feed37ab9b4c7293f342ddddfdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad8b143ff5d05c21ba6d31ee7bbce7d70a671feed37ab9b4c7293f342ddddfdc", kill_on_drop: false }`
[INFO] [stdout] ad8b143ff5d05c21ba6d31ee7bbce7d70a671feed37ab9b4c7293f342ddddfdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 2573b8ded5911e9fc4a1d98b2d81455c17c9eaefa9a4c2d57eeefebdc8650edc
[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" "2573b8ded5911e9fc4a1d98b2d81455c17c9eaefa9a4c2d57eeefebdc8650edc", kill_on_drop: false }`
[INFO] [stderr]     Checking json-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/lexer.rs:293:9
[INFO] [stdout]     |
[INFO] [stdout] 293 |         ///
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 294 |         Token::new(StrBody, 0, 2), //
[INFO] [stdout]     |         ------------------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/lexer.rs:335:9
[INFO] [stdout]     |
[INFO] [stdout] 335 |         ///
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 336 |         Token::new(IllegalToken, 0, 1), //
[INFO] [stdout]     |         ------------------------------ rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "2573b8ded5911e9fc4a1d98b2d81455c17c9eaefa9a4c2d57eeefebdc8650edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2573b8ded5911e9fc4a1d98b2d81455c17c9eaefa9a4c2d57eeefebdc8650edc", kill_on_drop: false }`
[INFO] [stdout] 2573b8ded5911e9fc4a1d98b2d81455c17c9eaefa9a4c2d57eeefebdc8650edc