[INFO] cloning repository https://github.com/omagdy7/five-programming-problems
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/omagdy7/five-programming-problems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomagdy7%2Ffive-programming-problems", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomagdy7%2Ffive-programming-problems'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 338a2a79f033344c7f05c9f3db0b4da9584540f2
[INFO] checking omagdy7/five-programming-problems against master#8e37e151835d96d6a7415e93e6876561485a3354 for pr-134218
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomagdy7%2Ffive-programming-problems" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/omagdy7/five-programming-problems on toolchain 8e37e151835d96d6a7415e93e6876561485a3354
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8e37e151835d96d6a7415e93e6876561485a3354" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/omagdy7/five-programming-problems
[INFO] finished tweaking git repo https://github.com/omagdy7/five-programming-problems
[INFO] tweaked toml for git repo https://github.com/omagdy7/five-programming-problems written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/omagdy7/five-programming-problems 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" "+8e37e151835d96d6a7415e93e6876561485a3354" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+8e37e151835d96d6a7415e93e6876561485a3354" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 103d04b1254ea038b990bcbda72c4646eb35d02422d110299ea3cb4a88c1df91
[INFO] running `Command { std: "docker" "start" "-a" "103d04b1254ea038b990bcbda72c4646eb35d02422d110299ea3cb4a88c1df91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "103d04b1254ea038b990bcbda72c4646eb35d02422d110299ea3cb4a88c1df91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "103d04b1254ea038b990bcbda72c4646eb35d02422d110299ea3cb4a88c1df91", kill_on_drop: false }`
[INFO] [stdout] 103d04b1254ea038b990bcbda72c4646eb35d02422d110299ea3cb4a88c1df91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+8e37e151835d96d6a7415e93e6876561485a3354" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dd8d7d8a2f79eee76e53cf3075359ed5e7c7f17d71e7f5d6661cb22b0e8a270
[INFO] running `Command { std: "docker" "start" "-a" "7dd8d7d8a2f79eee76e53cf3075359ed5e7c7f17d71e7f5d6661cb22b0e8a270", kill_on_drop: false }`
[INFO] [stderr]     Checking five-programming-problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/problem5.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     op: &str,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]   --> src/problem5.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     op: &str,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_for` is never used
[INFO] [stdout]  --> src/problem1.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn sum_for(array: &Vec<i32>) -> i32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_while` is never used
[INFO] [stdout]  --> src/problem1.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn sum_while(array: &Vec<i32>) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "7dd8d7d8a2f79eee76e53cf3075359ed5e7c7f17d71e7f5d6661cb22b0e8a270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dd8d7d8a2f79eee76e53cf3075359ed5e7c7f17d71e7f5d6661cb22b0e8a270", kill_on_drop: false }`
[INFO] [stdout] 7dd8d7d8a2f79eee76e53cf3075359ed5e7c7f17d71e7f5d6661cb22b0e8a270