[INFO] cloning repository https://github.com/hourhl/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hourhl/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhourhl%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhourhl%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 182a96f8bb1fd75cfd3fb13ef4146b1cf464600c
[INFO] checking hourhl/rustlings against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhourhl%2Frustlings" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
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[INFO] validating manifest of git repo https://github.com/hourhl/rustlings on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hourhl/rustlings
[INFO] finished tweaking git repo https://github.com/hourhl/rustlings
[INFO] tweaked toml for git repo https://github.com/hourhl/rustlings written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hourhl/rustlings 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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6d46d196676b1a0abbc0b583d08560ff339788e8960a483cd9e4893a82691f2
[INFO] running `Command { std: "docker" "start" "-a" "d6d46d196676b1a0abbc0b583d08560ff339788e8960a483cd9e4893a82691f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6d46d196676b1a0abbc0b583d08560ff339788e8960a483cd9e4893a82691f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6d46d196676b1a0abbc0b583d08560ff339788e8960a483cd9e4893a82691f2", kill_on_drop: false }`
[INFO] [stdout] d6d46d196676b1a0abbc0b583d08560ff339788e8960a483cd9e4893a82691f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26170fe20a25c6e8edd47e80fba8c28cc8bf59b8a7c30946f91ebc76fca63c20
[INFO] running `Command { std: "docker" "start" "-a" "26170fe20a25c6e8edd47e80fba8c28cc8bf59b8a7c30946f91ebc76fca63c20", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     if (b == 0){
[INFO] [stdout]    |        ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 14 -     if (b == 0){
[INFO] [stdout] 14 +     if b == 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     } else if (a == i64::MIN && b == -1){
[INFO] [stdout]    |               ^                        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 16 -     } else if (a == i64::MIN && b == -1){
[INFO] [stdout] 16 +     } else if a == i64::MIN && b == -1 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 18 |     } else if (a % b != 0){
[INFO] [stdout]    |               ^          ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 18 -     } else if (a % b != 0){
[INFO] [stdout] 18 +     } else if a % b != 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     if (b == 0){
[INFO] [stdout]    |        ^      ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 14 -     if (b == 0){
[INFO] [stdout] 14 +     if b == 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     } else if (a == i64::MIN && b == -1){
[INFO] [stdout]    |               ^                        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 16 -     } else if (a == i64::MIN && b == -1){
[INFO] [stdout] 16 +     } else if a == i64::MIN && b == -1 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> exercises/18_iterators/iterators3.rs:18:15
[INFO] [stdout]    |
[INFO] [stdout] 18 |     } else if (a % b != 0){
[INFO] [stdout]    |               ^          ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 18 -     } else if (a % b != 0){
[INFO] [stdout] 18 +     } else if a % b != 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `&str` to `&str`
[INFO] [stdout]   --> exercises/09_strings/strings4.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     string_slice("nice weather".into());
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "strings4" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> exercises/18_iterators/iterators4.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     if (num == 0){
[INFO] [stdout]    |        ^        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 13 -     if (num == 0){
[INFO] [stdout] 13 +     if num == 0 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "26170fe20a25c6e8edd47e80fba8c28cc8bf59b8a7c30946f91ebc76fca63c20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26170fe20a25c6e8edd47e80fba8c28cc8bf59b8a7c30946f91ebc76fca63c20", kill_on_drop: false }`
[INFO] [stdout] 26170fe20a25c6e8edd47e80fba8c28cc8bf59b8a7c30946f91ebc76fca63c20