[INFO] cloning repository https://github.com/andrejfox/rust-go-brrr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andrejfox/rust-go-brrr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrejfox%2Frust-go-brrr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrejfox%2Frust-go-brrr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba5b5c9f6f2ae083f46d94af8df48c7cd4e1c987
[INFO] checking andrejfox/rust-go-brrr against try#1c4199da70f816f2239f41c55168ff75a3663718 for pr-155499
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrejfox%2Frust-go-brrr" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/andrejfox/rust-go-brrr
[INFO] finished tweaking git repo https://github.com/andrejfox/rust-go-brrr
[INFO] tweaked toml for git repo https://github.com/andrejfox/rust-go-brrr written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/andrejfox/rust-go-brrr on toolchain 1c4199da70f816f2239f41c55168ff75a3663718
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1c4199da70f816f2239f41c55168ff75a3663718" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/andrejfox/rust-go-brrr 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" "+1c4199da70f816f2239f41c55168ff75a3663718" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+1c4199da70f816f2239f41c55168ff75a3663718" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b50672be6a89fb4acc23cf3037dcdbe81515a893b4207145bcab34521aba104a
[INFO] running `Command { std: "docker" "start" "-a" "b50672be6a89fb4acc23cf3037dcdbe81515a893b4207145bcab34521aba104a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b50672be6a89fb4acc23cf3037dcdbe81515a893b4207145bcab34521aba104a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b50672be6a89fb4acc23cf3037dcdbe81515a893b4207145bcab34521aba104a", kill_on_drop: false }`
[INFO] [stdout] b50672be6a89fb4acc23cf3037dcdbe81515a893b4207145bcab34521aba104a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "+1c4199da70f816f2239f41c55168ff75a3663718" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7685adf2f240c7acae5712c10cd4f61a1dec8e4737cf80de3f4d677b2f1cb710
[INFO] running `Command { std: "docker" "start" "-a" "7685adf2f240c7acae5712c10cd4f61a1dec8e4737cf80de3f4d677b2f1cb710", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking untitled v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut op_stack:Vec<Operator> = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `state` is never read
[INFO] [stdout]   --> src/main.rs:46:25
[INFO] [stdout]    |
[INFO] [stdout] 46 |           let mut state = State::ReadNumber;
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 55 | /                 state = match c {
[INFO] [stdout] 56 | |                         '+' => State::Operator(Operator::Add),
[INFO] [stdout] 57 | |                         '-' => State::Operator(Operator::Sub),
[INFO] [stdout] 58 | |                         '*' => State::Operator(Operator::Mult),
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |                         _ =>   State::Operator(Operator::Mystery),
[INFO] [stdout] 63 | |                     };
[INFO] [stdout]    | |_____________________- `state` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `state` is never read
[INFO] [stdout]   --> src/main.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |                 state = State::ReadNumber;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let mut op_stack:Vec<Operator> = Vec::new();
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `state` is never read
[INFO] [stdout]   --> src/main.rs:46:25
[INFO] [stdout]    |
[INFO] [stdout] 46 |           let mut state = State::ReadNumber;
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 55 | /                 state = match c {
[INFO] [stdout] 56 | |                         '+' => State::Operator(Operator::Add),
[INFO] [stdout] 57 | |                         '-' => State::Operator(Operator::Sub),
[INFO] [stdout] 58 | |                         '*' => State::Operator(Operator::Mult),
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |                         _ =>   State::Operator(Operator::Mystery),
[INFO] [stdout] 63 | |                     };
[INFO] [stdout]    | |_____________________- `state` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `state` is never read
[INFO] [stdout]   --> src/main.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |                 state = State::ReadNumber;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.11s
[INFO] running `Command { std: "docker" "inspect" "7685adf2f240c7acae5712c10cd4f61a1dec8e4737cf80de3f4d677b2f1cb710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7685adf2f240c7acae5712c10cd4f61a1dec8e4737cf80de3f4d677b2f1cb710", kill_on_drop: false }`
[INFO] [stdout] 7685adf2f240c7acae5712c10cd4f61a1dec8e4737cf80de3f4d677b2f1cb710
