[INFO] cloning repository https://github.com/matt-porter/synacor-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matt-porter/synacor-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt-porter%2Fsynacor-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt-porter%2Fsynacor-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8806e74f13ee2433915153a09385a69fe58b1ed8
[INFO] checking matt-porter/synacor-challenge against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatt-porter%2Fsynacor-challenge" "/workspace/builds/worker-118/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-118/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matt-porter/synacor-challenge on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matt-porter/synacor-challenge
[INFO] finished tweaking git repo https://github.com/matt-porter/synacor-challenge
[INFO] tweaked toml for git repo https://github.com/matt-porter/synacor-challenge written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] crate git repo https://github.com/matt-porter/synacor-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2eaad5cd2a95adb1d7f0926d0b21ac292c157c4096ef0d6b937d1ba09e5e51b2
[INFO] running `Command { std: "docker" "start" "-a" "2eaad5cd2a95adb1d7f0926d0b21ac292c157c4096ef0d6b937d1ba09e5e51b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2eaad5cd2a95adb1d7f0926d0b21ac292c157c4096ef0d6b937d1ba09e5e51b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2eaad5cd2a95adb1d7f0926d0b21ac292c157c4096ef0d6b937d1ba09e5e51b2", kill_on_drop: false }`
[INFO] [stdout] 2eaad5cd2a95adb1d7f0926d0b21ac292c157c4096ef0d6b937d1ba09e5e51b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df995ce834d0f39dbd623a6f105f8da3e2573d80e59bc2f426eb15d437df476c
[INFO] running `Command { std: "docker" "start" "-a" "df995ce834d0f39dbd623a6f105f8da3e2573d80e59bc2f426eb15d437df476c", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking termcolor v1.0.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking env_logger v0.7.0
[INFO] [stderr]     Checking synacor v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/main.rs (9 fixes)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:330:9
[INFO] [stdout]     |
[INFO] [stdout] 329 |         std::process::exit(0);
[INFO] [stdout]     |         --------------------- any code following this expression is unreachable
[INFO] [stdout] 330 |         0
[INFO] [stdout]     |         ^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:330:9
[INFO] [stdout]     |
[INFO] [stdout] 329 |         std::process::exit(0);
[INFO] [stdout]     |         --------------------- any code following this expression is unreachable
[INFO] [stdout] 330 |         0
[INFO] [stdout]     |         ^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]    --> src/main.rs:366:6
[INFO] [stdout]     |
[INFO] [stdout] 366 | enum Value {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]    --> src/main.rs:366:6
[INFO] [stdout]     |
[INFO] [stdout] 366 | enum Value {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.19s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking synacor v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:330:9
[INFO] [stdout]     |
[INFO] [stdout] 329 |         std::process::exit(0);
[INFO] [stdout]     |         --------------------- any code following this expression is unreachable
[INFO] [stdout] 330 |         0
[INFO] [stdout]     |         ^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:330:9
[INFO] [stdout]     |
[INFO] [stdout] 329 |         std::process::exit(0);
[INFO] [stdout]     |         --------------------- any code following this expression is unreachable
[INFO] [stdout] 330 |         0
[INFO] [stdout]     |         ^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]    --> src/main.rs:366:6
[INFO] [stdout]     |
[INFO] [stdout] 366 | enum Value {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]    --> src/main.rs:366:6
[INFO] [stdout]     |
[INFO] [stdout] 366 | enum Value {
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "df995ce834d0f39dbd623a6f105f8da3e2573d80e59bc2f426eb15d437df476c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df995ce834d0f39dbd623a6f105f8da3e2573d80e59bc2f426eb15d437df476c", kill_on_drop: false }`
[INFO] [stdout] df995ce834d0f39dbd623a6f105f8da3e2573d80e59bc2f426eb15d437df476c