[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 49a6044d37d694890450f52ceaceb66277a36b1e for pr-161154
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhourhl%2Frustlings" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
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[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-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hourhl/rustlings on toolchain 49a6044d37d694890450f52ceaceb66277a36b1e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49a6044d37d694890450f52ceaceb66277a36b1e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+49a6044d37d694890450f52ceaceb66277a36b1e" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking hourhl/rustlings against 49a6044d37d694890450f52ceaceb66277a36b1e for pr-161154
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhourhl%2Frustlings" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
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[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-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hourhl/rustlings on toolchain 49a6044d37d694890450f52ceaceb66277a36b1e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+49a6044d37d694890450f52ceaceb66277a36b1e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+49a6044d37d694890450f52ceaceb66277a36b1e" "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-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b6e9343f6825d6de7322e53d3f0d525ef28888af40ac28fdf24e3debc877e111
[INFO] running `Command { std: "docker" "start" "b6e9343f6825d6de7322e53d3f0d525ef28888af40ac28fdf24e3debc877e111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6e9343f6825d6de7322e53d3f0d525ef28888af40ac28fdf24e3debc877e111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b6e9343f6825d6de7322e53d3f0d525ef28888af40ac28fdf24e3debc877e111" "/opt/rustwide/cargo-home/bin/cargo" "+49a6044d37d694890450f52ceaceb66277a36b1e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6e9343f6825d6de7322e53d3f0d525ef28888af40ac28fdf24e3debc877e111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b6e9343f6825d6de7322e53d3f0d525ef28888af40ac28fdf24e3debc877e111" "/opt/rustwide/cargo-home/bin/cargo" "+49a6044d37d694890450f52ceaceb66277a36b1e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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/iterators4.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     if (num == 0){
[INFO] [stdout]    |        ^        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) 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] [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)]` (part of `#[warn(unused)]`) 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/03_if/if1.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |     if(a > b){
[INFO] [stdout]   |       ^     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 7 -     if(a > b){
[INFO] [stdout] 7 +     if a > b {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> exercises/03_if/if1.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |     if(a > b){
[INFO] [stdout]   |       ^     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 7 -     if(a > b){
[INFO] [stdout] 7 +     if a > b {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> exercises/12_options/options1.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |     if(hour_of_day < 22) {
[INFO] [stdout]   |       ^                ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 7 -     if(hour_of_day < 22) {
[INFO] [stdout] 7 +     if hour_of_day < 22 {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> exercises/12_options/options1.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     } else if(hour_of_day <= 23){
[INFO] [stdout]   |              ^                 ^
[INFO] [stdout]   |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 9 -     } else if(hour_of_day <= 23){
[INFO] [stdout] 9 +     } else if hour_of_day <= 23 {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> exercises/23_conversions/from_str.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |         if (name.is_empty()) {
[INFO] [stdout]    |            ^               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 51 -         if (name.is_empty()) {
[INFO] [stdout] 51 +         if name.is_empty() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> exercises/12_options/options1.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |     if(hour_of_day < 22) {
[INFO] [stdout]   |       ^                ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 7 -     if(hour_of_day < 22) {
[INFO] [stdout] 7 +     if hour_of_day < 22 {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> exercises/12_options/options1.rs:9:14
[INFO] [stdout]   |
[INFO] [stdout] 9 |     } else if(hour_of_day <= 23){
[INFO] [stdout]   |              ^                 ^
[INFO] [stdout]   |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 9 -     } else if(hour_of_day <= 23){
[INFO] [stdout] 9 +     } else if hour_of_day <= 23 {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> exercises/23_conversions/from_str.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |         if (name.is_empty()) {
[INFO] [stdout]    |            ^               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 51 -         if (name.is_empty()) {
[INFO] [stdout] 51 +         if name.is_empty() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[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)]` (part of `#[warn(unused)]`) 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] [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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.09s
[INFO] running `Command { std: "docker" "inspect" "b6e9343f6825d6de7322e53d3f0d525ef28888af40ac28fdf24e3debc877e111", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6e9343f6825d6de7322e53d3f0d525ef28888af40ac28fdf24e3debc877e111", kill_on_drop: false }`
[INFO] [stdout] b6e9343f6825d6de7322e53d3f0d525ef28888af40ac28fdf24e3debc877e111
