[INFO] cloning repository https://github.com/theatharvamuley10/implementing_algos_in_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/theatharvamuley10/implementing_algos_in_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheatharvamuley10%2Fimplementing_algos_in_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheatharvamuley10%2Fimplementing_algos_in_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f00d29c2e3887ca2d4af0fc2ff7baf62acc4f3f
[INFO] checking theatharvamuley10/implementing_algos_in_rust/5f00d29c2e3887ca2d4af0fc2ff7baf62acc4f3f against master#3b1b0ef4d80d3117924d91352c8b6ca528708b3c for pr-152996
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftheatharvamuley10%2Fimplementing_algos_in_rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/theatharvamuley10/implementing_algos_in_rust
[INFO] finished tweaking git repo https://github.com/theatharvamuley10/implementing_algos_in_rust
[INFO] tweaked toml for git repo https://github.com/theatharvamuley10/implementing_algos_in_rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/theatharvamuley10/implementing_algos_in_rust on toolchain 3b1b0ef4d80d3117924d91352c8b6ca528708b3c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3b1b0ef4d80d3117924d91352c8b6ca528708b3c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/theatharvamuley10/implementing_algos_in_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" "+3b1b0ef4d80d3117924d91352c8b6ca528708b3c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3b1b0ef4d80d3117924d91352c8b6ca528708b3c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d570f85c2f867ead3a1a3b249f32dd45ec81032d5d982e8835889caea110953b
[INFO] running `Command { std: "docker" "start" "-a" "d570f85c2f867ead3a1a3b249f32dd45ec81032d5d982e8835889caea110953b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d570f85c2f867ead3a1a3b249f32dd45ec81032d5d982e8835889caea110953b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d570f85c2f867ead3a1a3b249f32dd45ec81032d5d982e8835889caea110953b", kill_on_drop: false }`
[INFO] [stdout] d570f85c2f867ead3a1a3b249f32dd45ec81032d5d982e8835889caea110953b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3b1b0ef4d80d3117924d91352c8b6ca528708b3c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2a835f56a62e7d5e82b48f47868f95e312427bc3a4aaab381cdf41f5b2687f7
[INFO] running `Command { std: "docker" "start" "-a" "b2a835f56a62e7d5e82b48f47868f95e312427bc3a4aaab381cdf41f5b2687f7", kill_on_drop: false }`
[INFO] [stderr]     Checking implementing_algos_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `num` is never read
[INFO] [stdout]   --> src/fibonacci.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut num = 0;
[INFO] [stdout]    |                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `num` is never read
[INFO] [stdout]   --> src/fibonacci.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut num = 0;
[INFO] [stdout]    |                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "b2a835f56a62e7d5e82b48f47868f95e312427bc3a4aaab381cdf41f5b2687f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2a835f56a62e7d5e82b48f47868f95e312427bc3a4aaab381cdf41f5b2687f7", kill_on_drop: false }`
[INFO] [stdout] b2a835f56a62e7d5e82b48f47868f95e312427bc3a4aaab381cdf41f5b2687f7