[INFO] updating cached repository https://github.com/Floppy/ruby-version-badger
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/Floppy/ruby-version-badger
[INFO] [stderr]    f08c625..53b4091  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 53b40910b6b62baa1ea17c8040fbb21a385a605c
[INFO] checking Floppy/ruby-version-badger against master#fe6d05a8b32f5c66c427ca524dbcce5a7145f87e for pr-64327
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FFloppy%2Fruby-version-badger" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Floppy/ruby-version-badger on toolchain fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Floppy/ruby-version-badger
[INFO] finished tweaking git repo https://github.com/Floppy/ruby-version-badger
[INFO] tweaked toml for git repo https://github.com/Floppy/ruby-version-badger written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Floppy/ruby-version-badger already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: unused manifest key: package.target
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e6a06acb8fee625aeae8215bfc881ac2f658e527d469b33e29051e4b54a55b17
[INFO] running `"docker" "start" "-a" "e6a06acb8fee625aeae8215bfc881ac2f658e527d469b33e29051e4b54a55b17"`
[INFO] [stderr] warning: unused manifest key: package.target
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking openssl v0.10.24
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking env_logger v0.7.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking router v0.6.0
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]     Checking reqwest v0.9.20
[INFO] [stderr]     Checking ruby-version-badger v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/ruby.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/rust.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/node.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/ruby.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/rust.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `version` is never read
[INFO] [stderr]   --> src/node.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut version = "unknown".to_string();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `language`
[INFO] [stderr]   --> src/config.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn language(lang: String) -> Result<yaml::Yaml, Error> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.93s
[INFO] running `"docker" "inspect" "e6a06acb8fee625aeae8215bfc881ac2f658e527d469b33e29051e4b54a55b17"`
[INFO] running `"docker" "rm" "-f" "e6a06acb8fee625aeae8215bfc881ac2f658e527d469b33e29051e4b54a55b17"`
[INFO] [stdout] e6a06acb8fee625aeae8215bfc881ac2f658e527d469b33e29051e4b54a55b17