[INFO] updating cached repository https://github.com/Floppy/ruby-version-badger
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] From https://github.com/Floppy/ruby-version-badger
[INFO] [stderr]    bdfc810..20eb7ee  master     -> master
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 20eb7ee64a4feba8cff610350e08fc122764fc5b
[INFO] checking Floppy/ruby-version-badger against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFloppy%2Fruby-version-badger" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Floppy/ruby-version-badger on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 /workspace/builds/worker-13/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.target
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 012b87c80e7f38b23e62c8fefca463abc5a73b31625419bf682bfdf086ecde45
[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" "012b87c80e7f38b23e62c8fefca463abc5a73b31625419bf682bfdf086ecde45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "012b87c80e7f38b23e62c8fefca463abc5a73b31625419bf682bfdf086ecde45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "012b87c80e7f38b23e62c8fefca463abc5a73b31625419bf682bfdf086ecde45", kill_on_drop: false }`
[INFO] [stdout] 012b87c80e7f38b23e62c8fefca463abc5a73b31625419bf682bfdf086ecde45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 197e5a02abbc27552d01750c972042f76cd54dd9dde941344a2a513dba8487ea
[INFO] running `Command { std: "docker" "start" "-a" "197e5a02abbc27552d01750c972042f76cd54dd9dde941344a2a513dba8487ea", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.target
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling log v0.4.10
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking try-lock v0.2.2
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]     Checking sequence_trie v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking route-recognizer v0.1.13
[INFO] [stderr]     Checking base64 v0.12.2
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking encoding_rs v0.8.23
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling unicase v2.5.1
[INFO] [stderr]     Checking plugin v0.2.6
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking phf_shared v0.7.24
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking iron v0.6.1
[INFO] [stderr]     Checking mount v0.4.0
[INFO] [stderr]     Checking router v0.6.0
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking staticfile v0.5.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking hyper v0.13.4
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.6
[INFO] [stderr]     Checking ruby-version-badger v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `version` is never read
[INFO] [stdout]   --> src/ruby.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut version = "unknown".to_string();
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `version` is never read
[INFO] [stdout]   --> src/rust.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut version = "unknown".to_string();
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `version` is never read
[INFO] [stdout]   --> src/node.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut version = "unknown".to_string();
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `version` is never read
[INFO] [stdout]   --> src/ruby.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut version = "unknown".to_string();
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `version` is never read
[INFO] [stdout]   --> src/rust.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut version = "unknown".to_string();
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `version` is never read
[INFO] [stdout]   --> src/node.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut version = "unknown".to_string();
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `language`
[INFO] [stdout]   --> src/config.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn language(lang: String) -> Result<yaml::Yaml, Error> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 31s
[INFO] running `Command { std: "docker" "inspect" "197e5a02abbc27552d01750c972042f76cd54dd9dde941344a2a513dba8487ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "197e5a02abbc27552d01750c972042f76cd54dd9dde941344a2a513dba8487ea", kill_on_drop: false }`
[INFO] [stdout] 197e5a02abbc27552d01750c972042f76cd54dd9dde941344a2a513dba8487ea