[INFO] cloning repository https://github.com/MrWiseCoder/learning_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MrWiseCoder/learning_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrWiseCoder%2Flearning_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrWiseCoder%2Flearning_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b79e47f5edeeda96b4b3abd6e84cca977527d173
[INFO] checking MrWiseCoder/learning_rust against e977a0b5ab976a591981e7263bd67a71a4f79308 for pr-158914
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrWiseCoder%2Flearning_rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MrWiseCoder/learning_rust
[INFO] finished tweaking git repo https://github.com/MrWiseCoder/learning_rust
[INFO] tweaked toml for git repo https://github.com/MrWiseCoder/learning_rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MrWiseCoder/learning_rust on toolchain e977a0b5ab976a591981e7263bd67a71a4f79308
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e977a0b5ab976a591981e7263bd67a71a4f79308" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MrWiseCoder/learning_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e977a0b5ab976a591981e7263bd67a71a4f79308" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking MrWiseCoder/learning_rust against e977a0b5ab976a591981e7263bd67a71a4f79308 for pr-158914
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrWiseCoder%2Flearning_rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MrWiseCoder/learning_rust
[INFO] finished tweaking git repo https://github.com/MrWiseCoder/learning_rust
[INFO] tweaked toml for git repo https://github.com/MrWiseCoder/learning_rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MrWiseCoder/learning_rust on toolchain e977a0b5ab976a591981e7263bd67a71a4f79308
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e977a0b5ab976a591981e7263bd67a71a4f79308" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MrWiseCoder/learning_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e977a0b5ab976a591981e7263bd67a71a4f79308" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1e62c2ebd4253557cc8a93be8850f9ec86729e36b22718050dacb767f6a91b48
[INFO] running `Command { std: "docker" "start" "1e62c2ebd4253557cc8a93be8850f9ec86729e36b22718050dacb767f6a91b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e62c2ebd4253557cc8a93be8850f9ec86729e36b22718050dacb767f6a91b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1e62c2ebd4253557cc8a93be8850f9ec86729e36b22718050dacb767f6a91b48" "/opt/rustwide/cargo-home/bin/cargo" "+e977a0b5ab976a591981e7263bd67a71a4f79308" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e62c2ebd4253557cc8a93be8850f9ec86729e36b22718050dacb767f6a91b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1e62c2ebd4253557cc8a93be8850f9ec86729e36b22718050dacb767f6a91b48" "/opt/rustwide/cargo-home/bin/cargo" "+e977a0b5ab976a591981e7263bd67a71a4f79308" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/homework.rs:216:32
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn print_cum_arr(arr: &[&str], len: usize, i: usize) {
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut val: i32;
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main2` is never used
[INFO] [stdout]  --> src/loops.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main2() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main3` is never used
[INFO] [stdout]   --> src/loops.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn main3() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main4` is never used
[INFO] [stdout]   --> src/loops.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn main4() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main5` is never used
[INFO] [stdout]   --> src/loops.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn main5() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main6` is never used
[INFO] [stdout]   --> src/loops.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn main6() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FDELTA` is never used
[INFO] [stdout]  --> src/homework.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const FDELTA: f64 = 212.00 - 32.00;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CDELTA` is never used
[INFO] [stdout]  --> src/homework.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const CDELTA: f64 = 100.00;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RATIO` is never used
[INFO] [stdout]   --> src/homework.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const RATIO: f64  = FDELTA / CDELTA;
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_from_fahr_to_celc` is never used
[INFO] [stdout]   --> src/homework.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn convert_from_fahr_to_celc(fahr: i32) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_from_celc_to_fahr` is never used
[INFO] [stdout]   --> src/homework.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn convert_from_celc_to_fahr(celc: i32) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibn` is never used
[INFO] [stdout]   --> src/homework.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn fibn(number: u64) -> u64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/homework.rs:216:32
[INFO] [stdout]     |
[INFO] [stdout] 216 | fn print_cum_arr(arr: &[&str], len: usize, i: usize) {
[INFO] [stdout]     |                                ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]  --> src/main.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut val: i32;
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main2` is never used
[INFO] [stdout]  --> src/loops.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn main2() {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main3` is never used
[INFO] [stdout]   --> src/loops.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn main3() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main4` is never used
[INFO] [stdout]   --> src/loops.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn main4() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main5` is never used
[INFO] [stdout]   --> src/loops.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn main5() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main6` is never used
[INFO] [stdout]   --> src/loops.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn main6() {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FDELTA` is never used
[INFO] [stdout]  --> src/homework.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const FDELTA: f64 = 212.00 - 32.00;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CDELTA` is never used
[INFO] [stdout]  --> src/homework.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const CDELTA: f64 = 100.00;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RATIO` is never used
[INFO] [stdout]   --> src/homework.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const RATIO: f64  = FDELTA / CDELTA;
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_from_fahr_to_celc` is never used
[INFO] [stdout]   --> src/homework.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn convert_from_fahr_to_celc(fahr: i32) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `convert_from_celc_to_fahr` is never used
[INFO] [stdout]   --> src/homework.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn convert_from_celc_to_fahr(celc: i32) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fibn` is never used
[INFO] [stdout]   --> src/homework.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn fibn(number: u64) -> u64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "1e62c2ebd4253557cc8a93be8850f9ec86729e36b22718050dacb767f6a91b48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e62c2ebd4253557cc8a93be8850f9ec86729e36b22718050dacb767f6a91b48", kill_on_drop: false }`
[INFO] [stdout] 1e62c2ebd4253557cc8a93be8850f9ec86729e36b22718050dacb767f6a91b48
