[INFO] cloning repository https://github.com/kevin970401/fiv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kevin970401/fiv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevin970401%2Ffiv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevin970401%2Ffiv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6bd1ec0166462d2de28c5c53c8abc17e29131e2d
[INFO] checking kevin970401/fiv against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkevin970401%2Ffiv" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kevin970401/fiv on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kevin970401/fiv
[INFO] finished tweaking git repo https://github.com/kevin970401/fiv
[INFO] tweaked toml for git repo https://github.com/kevin970401/fiv written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/kevin970401/fiv already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn-mid v0.4.0
[INFO] [stderr]   Downloaded proc-macro-error-attr v0.4.5
[INFO] [stderr]   Downloaded rustversion v1.0.1
[INFO] [stderr]   Downloaded structopt-derive v0.4.1
[INFO] [stderr]   Downloaded proc-macro-error v0.4.5
[INFO] [stderr]   Downloaded structopt v0.3.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3459f483126f4252e2330df0f8212cf28c888896ed5aaa2d62c130e3f952e8ac
[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" "3459f483126f4252e2330df0f8212cf28c888896ed5aaa2d62c130e3f952e8ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3459f483126f4252e2330df0f8212cf28c888896ed5aaa2d62c130e3f952e8ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3459f483126f4252e2330df0f8212cf28c888896ed5aaa2d62c130e3f952e8ac", kill_on_drop: false }`
[INFO] [stdout] 3459f483126f4252e2330df0f8212cf28c888896ed5aaa2d62c130e3f952e8ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 852540b46d341bddbc70abd0f2eac0da9608b049a3afed511727ab41afb5f0f3
[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" "852540b46d341bddbc70abd0f2eac0da9608b049a3afed511727ab41afb5f0f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]    Compiling proc-macro-error v0.4.5
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.5
[INFO] [stderr]    Compiling structopt-derive v0.4.1
[INFO] [stderr]     Checking structopt v0.3.8
[INFO] [stderr]     Checking fiv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `paths`
[INFO] [stdout]  --> src/display.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn display(paths: &[&str]){
[INFO] [stdout]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_paths`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paths`
[INFO] [stdout]  --> src/display.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn display(paths: &[&str]){
[INFO] [stdout]   |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_paths`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` 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 12.50s
[INFO] running `Command { std: "docker" "inspect" "852540b46d341bddbc70abd0f2eac0da9608b049a3afed511727ab41afb5f0f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "852540b46d341bddbc70abd0f2eac0da9608b049a3afed511727ab41afb5f0f3", kill_on_drop: false }`
[INFO] [stdout] 852540b46d341bddbc70abd0f2eac0da9608b049a3afed511727ab41afb5f0f3