[INFO] cloning repository https://github.com/Hydrant777/kalkulacka
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hydrant777/kalkulacka" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHydrant777%2Fkalkulacka", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHydrant777%2Fkalkulacka'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 582c8b7029f8efe39d5f4ab62cd9e39147627c20
[INFO] checking Hydrant777/kalkulacka against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHydrant777%2Fkalkulacka" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Hydrant777/kalkulacka
[INFO] finished tweaking git repo https://github.com/Hydrant777/kalkulacka
[INFO] tweaked toml for git repo https://github.com/Hydrant777/kalkulacka written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Hydrant777/kalkulacka on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Hydrant777/kalkulacka 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.7.14
[INFO] [stderr]   Downloaded regex v1.4.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.20
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3176bd0963a6a32b28d40022da935657ec4fb08cfaf93065621c365fe2d8fdf3
[INFO] running `Command { std: "docker" "start" "-a" "3176bd0963a6a32b28d40022da935657ec4fb08cfaf93065621c365fe2d8fdf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3176bd0963a6a32b28d40022da935657ec4fb08cfaf93065621c365fe2d8fdf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3176bd0963a6a32b28d40022da935657ec4fb08cfaf93065621c365fe2d8fdf3", kill_on_drop: false }`
[INFO] [stdout] 3176bd0963a6a32b28d40022da935657ec4fb08cfaf93065621c365fe2d8fdf3
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9657901b8bcda28f03dd024ac4c3d1a189727867df3b3cdf731b9a88deae0c43
[INFO] running `Command { std: "docker" "start" "-a" "9657901b8bcda28f03dd024ac4c3d1a189727867df3b3cdf731b9a88deae0c43", kill_on_drop: false }`
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]     Checking regex-syntax v0.6.20
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking kalkulacka v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |       for cap in c_multiply.captures(&partial) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 52 -       for cap in c_multiply.captures(&partial) {
[INFO] [stdout] 52 +       while let Some(cap) = c_multiply.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 52 -       for cap in c_multiply.captures(&partial) {
[INFO] [stdout] 52 +       if let Some(cap) = c_multiply.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |       for cap in c_divide.captures(&partial) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 60 -       for cap in c_divide.captures(&partial) {
[INFO] [stdout] 60 +       while let Some(cap) = c_divide.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 60 -       for cap in c_divide.captures(&partial) {
[INFO] [stdout] 60 +       if let Some(cap) = c_divide.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:68:18
[INFO] [stdout]    |
[INFO] [stdout] 68 |       for cap in c_add.captures(&partial) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 68 -       for cap in c_add.captures(&partial) {
[INFO] [stdout] 68 +       while let Some(cap) = c_add.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 68 -       for cap in c_add.captures(&partial) {
[INFO] [stdout] 68 +       if let Some(cap) = c_add.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:74:18
[INFO] [stdout]    |
[INFO] [stdout] 74 |       for cap in c_substract.captures(&partial) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 74 -       for cap in c_substract.captures(&partial) {
[INFO] [stdout] 74 +       while let Some(cap) = c_substract.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 74 -       for cap in c_substract.captures(&partial) {
[INFO] [stdout] 74 +       if let Some(cap) = c_substract.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:97:18
[INFO] [stdout]    |
[INFO] [stdout] 97 |       for cap in braces.captures(&output) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 97 -       for cap in braces.captures(&output) {
[INFO] [stdout] 97 +       while let Some(cap) = braces.captures(&output) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 97 -       for cap in braces.captures(&output) {
[INFO] [stdout] 97 +       if let Some(cap) = braces.captures(&output) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |       for cap in c_multiply.captures(&partial) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 52 -       for cap in c_multiply.captures(&partial) {
[INFO] [stdout] 52 +       while let Some(cap) = c_multiply.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 52 -       for cap in c_multiply.captures(&partial) {
[INFO] [stdout] 52 +       if let Some(cap) = c_multiply.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |       for cap in c_divide.captures(&partial) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 60 -       for cap in c_divide.captures(&partial) {
[INFO] [stdout] 60 +       while let Some(cap) = c_divide.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 60 -       for cap in c_divide.captures(&partial) {
[INFO] [stdout] 60 +       if let Some(cap) = c_divide.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:68:18
[INFO] [stdout]    |
[INFO] [stdout] 68 |       for cap in c_add.captures(&partial) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 68 -       for cap in c_add.captures(&partial) {
[INFO] [stdout] 68 +       while let Some(cap) = c_add.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 68 -       for cap in c_add.captures(&partial) {
[INFO] [stdout] 68 +       if let Some(cap) = c_add.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:74:18
[INFO] [stdout]    |
[INFO] [stdout] 74 |       for cap in c_substract.captures(&partial) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 74 -       for cap in c_substract.captures(&partial) {
[INFO] [stdout] 74 +       while let Some(cap) = c_substract.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 74 -       for cap in c_substract.captures(&partial) {
[INFO] [stdout] 74 +       if let Some(cap) = c_substract.captures(&partial) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/main.rs:97:18
[INFO] [stdout]    |
[INFO] [stdout] 97 |       for cap in braces.captures(&output) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 97 -       for cap in braces.captures(&output) {
[INFO] [stdout] 97 +       while let Some(cap) = braces.captures(&output) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 97 -       for cap in braces.captures(&output) {
[INFO] [stdout] 97 +       if let Some(cap) = braces.captures(&output) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `Command { std: "docker" "inspect" "9657901b8bcda28f03dd024ac4c3d1a189727867df3b3cdf731b9a88deae0c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9657901b8bcda28f03dd024ac4c3d1a189727867df3b3cdf731b9a88deae0c43", kill_on_drop: false }`
[INFO] [stdout] 9657901b8bcda28f03dd024ac4c3d1a189727867df3b3cdf731b9a88deae0c43