[INFO] cloning repository https://github.com/Lichthagel/relrate-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lichthagel/relrate-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLichthagel%2Frelrate-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLichthagel%2Frelrate-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 242d423e62c5573aa4000be80ec202a701c334bc
[INFO] checking Lichthagel/relrate-rs against try#8b72f65b805cbe4c261de45030d663f524f27376 for pr-78991
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLichthagel%2Frelrate-rs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lichthagel/relrate-rs on toolchain 8b72f65b805cbe4c261de45030d663f524f27376
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lichthagel/relrate-rs
[INFO] finished tweaking git repo https://github.com/Lichthagel/relrate-rs
[INFO] tweaked toml for git repo https://github.com/Lichthagel/relrate-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Lichthagel/relrate-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8b72f65b805cbe4c261de45030d663f524f27376" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bincode v1.3.1
[INFO] [stderr]   Downloaded os_str_bytes v2.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "metadata" "--no-deps" "--format-version=1", 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] 0cc2d6257b87916a14518a0c88d0b40c41cab6312282b85f700ef8e35271dfcd
[INFO] running `Command { std: "docker" "start" "-a" "0cc2d6257b87916a14518a0c88d0b40c41cab6312282b85f700ef8e35271dfcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cc2d6257b87916a14518a0c88d0b40c41cab6312282b85f700ef8e35271dfcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cc2d6257b87916a14518a0c88d0b40c41cab6312282b85f700ef8e35271dfcd", kill_on_drop: false }`
[INFO] [stdout] 0cc2d6257b87916a14518a0c88d0b40c41cab6312282b85f700ef8e35271dfcd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+8b72f65b805cbe4c261de45030d663f524f27376" "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] b48c93c472f363475036af77df4ce7abd313c331375808b303bf94fc2cb173bf
[INFO] running `Command { std: "docker" "start" "-a" "b48c93c472f363475036af77df4ce7abd313c331375808b303bf94fc2cb173bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking relrate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `RateVec`
[INFO] [stdout]   --> src/rate_vec.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct RateVec {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/rate_vec.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create`
[INFO] [stdout]   --> src/rate_vec.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn create(names: Vec<String>) -> Self {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from`
[INFO] [stdout]   --> src/rate_vec.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn from<P: AsRef<Path>>(file: P) -> Result<Self, io::Error> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]   --> src/rate_vec.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn load<P: AsRef<Path>>(file: P) -> Result<Self, Error> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `save`
[INFO] [stdout]   --> src/rate_vec.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn save<P: AsRef<Path>>(&self, file: P) -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random_pair`
[INFO] [stdout]   --> src/rate_vec.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn random_pair(&mut self) -> Option<(&mut RateEntry, &mut RateEntry)> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RateVec`
[INFO] [stdout]   --> src/rate_vec.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub struct RateVec {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/rate_vec.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create`
[INFO] [stdout]   --> src/rate_vec.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn create(names: Vec<String>) -> Self {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from`
[INFO] [stdout]   --> src/rate_vec.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn from<P: AsRef<Path>>(file: P) -> Result<Self, io::Error> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]   --> src/rate_vec.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn load<P: AsRef<Path>>(file: P) -> Result<Self, Error> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `save`
[INFO] [stdout]   --> src/rate_vec.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn save<P: AsRef<Path>>(&self, file: P) -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random_pair`
[INFO] [stdout]   --> src/rate_vec.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn random_pair(&mut self) -> Option<(&mut RateEntry, &mut RateEntry)> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.09s
[INFO] running `Command { std: "docker" "inspect" "b48c93c472f363475036af77df4ce7abd313c331375808b303bf94fc2cb173bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b48c93c472f363475036af77df4ce7abd313c331375808b303bf94fc2cb173bf", kill_on_drop: false }`
[INFO] [stdout] b48c93c472f363475036af77df4ce7abd313c331375808b303bf94fc2cb173bf