[INFO] cloning repository https://github.com/ivanteoh/temperature-converter-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/ivanteoh/temperature-converter-in-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivanteoh%2Ftemperature-converter-in-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivanteoh%2Ftemperature-converter-in-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9a19d162922c7b478191fa76735da8056219d107
[INFO] testing ivanteoh/temperature-converter-in-rust against master#552a959051cebf8f88a8f558399baf733bec9ce0 for pr-136932
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivanteoh%2Ftemperature-converter-in-rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ivanteoh/temperature-converter-in-rust on toolchain 552a959051cebf8f88a8f558399baf733bec9ce0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ivanteoh/temperature-converter-in-rust
[INFO] finished tweaking git repo https://github.com/ivanteoh/temperature-converter-in-rust
[INFO] tweaked toml for git repo https://github.com/ivanteoh/temperature-converter-in-rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ivanteoh/temperature-converter-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" "+552a959051cebf8f88a8f558399baf733bec9ce0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7cb2df7be353cacfddc44664082884a0619723289fe0cb34405305102532f2f3
[INFO] running `Command { std: "docker" "start" "-a" "7cb2df7be353cacfddc44664082884a0619723289fe0cb34405305102532f2f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cb2df7be353cacfddc44664082884a0619723289fe0cb34405305102532f2f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cb2df7be353cacfddc44664082884a0619723289fe0cb34405305102532f2f3", kill_on_drop: false }`
[INFO] [stdout] 7cb2df7be353cacfddc44664082884a0619723289fe0cb34405305102532f2f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da21acf3f30cd97e60c5820bbd5017253250f0af436b72b077f4b3098a869c4d
[INFO] running `Command { std: "docker" "start" "-a" "da21acf3f30cd97e60c5820bbd5017253250f0af436b72b077f4b3098a869c4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling temperature_converter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected `;`, found keyword `let`
[INFO] [stdout]   --> src/main.rs:30:38
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let mut from_unit = "Celsius"
[INFO] [stdout]    |                                      ^ help: add `;` here
[INFO] [stdout] 31 |         let mut to_unit = "Fahrenheit"
[INFO] [stdout]    |         --- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected `;`, found keyword `let`
[INFO] [stdout]   --> src/main.rs:31:39
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut to_unit = "Fahrenheit"
[INFO] [stdout]    |                                       ^ help: add `;` here
[INFO] [stdout] 32 |
[INFO] [stdout] 33 |         let conversion: u32 = match temperature.trim().parse() {
[INFO] [stdout]    |         --- unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from_unit`
[INFO] [stdout]   --> src/main.rs:30:17
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let mut from_unit = "Celsius"
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_from_unit`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to_unit`
[INFO] [stdout]   --> src/main.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut to_unit = "Fahrenheit"
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_to_unit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:30:13
[INFO] [stdout]    |
[INFO] [stdout] 30 |         let mut from_unit = "Celsius"
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut to_unit = "Fahrenheit"
[INFO] [stdout]    |             ----^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `temperature_converter` (bin "temperature_converter") due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "da21acf3f30cd97e60c5820bbd5017253250f0af436b72b077f4b3098a869c4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da21acf3f30cd97e60c5820bbd5017253250f0af436b72b077f4b3098a869c4d", kill_on_drop: false }`
[INFO] [stdout] da21acf3f30cd97e60c5820bbd5017253250f0af436b72b077f4b3098a869c4d