[INFO] cloning repository https://github.com/chmlee/ream_core
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chmlee/ream_core" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchmlee%2Fream_core", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchmlee%2Fream_core'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ca0c2f5f90a5d194f22058f23c0a0526c6cdb88
[INFO] checking chmlee/ream_core against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchmlee%2Fream_core" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chmlee/ream_core on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chmlee/ream_core
[INFO] finished tweaking git repo https://github.com/chmlee/ream_core
[INFO] tweaked toml for git repo https://github.com/chmlee/ream_core written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/chmlee/ream_core already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 97a117a81a2c832d71a5e7213fb72fad6196d594c8bf5b802513cac471762818
[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" "97a117a81a2c832d71a5e7213fb72fad6196d594c8bf5b802513cac471762818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97a117a81a2c832d71a5e7213fb72fad6196d594c8bf5b802513cac471762818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97a117a81a2c832d71a5e7213fb72fad6196d594c8bf5b802513cac471762818", kill_on_drop: false }`
[INFO] [stdout] 97a117a81a2c832d71a5e7213fb72fad6196d594c8bf5b802513cac471762818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16c4baa081ccdfe5a6869b99062c030415b84328a7e847d1bf7ce4cf8b130dd6
[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" "16c4baa081ccdfe5a6869b99062c030415b84328a7e847d1bf7ce4cf8b130dd6", kill_on_drop: false }`
[INFO] [stderr]     Checking ream_core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias is never used: `ReamParseValueResult`
[INFO] [stdout]   --> src/ream_obj.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         pub type $name = Result<$result, ReamParseError>;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 | result_type!(ReamParseValueResult, ReamValue);
[INFO] [stdout]    | ---------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `ReamParseValueResult`
[INFO] [stdout]   --> src/ream_obj.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         pub type $name = Result<$result, ReamParseError>;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 | result_type!(ReamParseValueResult, ReamValue);
[INFO] [stdout]    | ---------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "16c4baa081ccdfe5a6869b99062c030415b84328a7e847d1bf7ce4cf8b130dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16c4baa081ccdfe5a6869b99062c030415b84328a7e847d1bf7ce4cf8b130dd6", kill_on_drop: false }`
[INFO] [stdout] 16c4baa081ccdfe5a6869b99062c030415b84328a7e847d1bf7ce4cf8b130dd6