[INFO] cloning repository https://github.com/dora-gt/sc4
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dora-gt/sc4" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdora-gt%2Fsc4", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdora-gt%2Fsc4'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86acbf5950d1ecd4f06c8861d9c0bf40b3ff1205
[INFO] checking dora-gt/sc4 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdora-gt%2Fsc4" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dora-gt/sc4
[INFO] finished tweaking git repo https://github.com/dora-gt/sc4
[INFO] tweaked toml for git repo https://github.com/dora-gt/sc4 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dora-gt/sc4 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/dora-gt/sc4 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded utf8-ranges v1.0.2
[INFO] [stderr]   Downloaded numtoa v0.1.0
[INFO] [stderr]   Downloaded lazy_static v1.3.0
[INFO] [stderr]   Downloaded ucd-util v0.1.3
[INFO] [stderr]   Downloaded redox_termios v0.1.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] [stderr]   Downloaded memchr v2.2.0
[INFO] [stderr]   Downloaded ryu v0.2.8
[INFO] [stderr]   Downloaded alfred v4.0.1
[INFO] [stderr]   Downloaded aho-corasick v0.7.3
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded serde v1.0.91
[INFO] [stderr]   Downloaded serde_json v1.0.39
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded termion v1.5.2
[INFO] [stderr]   Downloaded atty v0.2.11
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded regex v1.1.6
[INFO] [stderr]   Downloaded regex-syntax v0.6.6
[INFO] [stderr]   Downloaded libc v0.2.55
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1bc1966d5df24a6605f33e941b022f3fe02ccb0618bccfd58b82b7385572859a
[INFO] running `Command { std: "docker" "start" "-a" "1bc1966d5df24a6605f33e941b022f3fe02ccb0618bccfd58b82b7385572859a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bc1966d5df24a6605f33e941b022f3fe02ccb0618bccfd58b82b7385572859a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bc1966d5df24a6605f33e941b022f3fe02ccb0618bccfd58b82b7385572859a", kill_on_drop: false }`
[INFO] [stdout] 1bc1966d5df24a6605f33e941b022f3fe02ccb0618bccfd58b82b7385572859a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] bca0f1ab35206873c67bb9c17affa7bc6082fb68b8102a47bb6b40a0ec374fbb
[INFO] running `Command { std: "docker" "start" "-a" "bca0f1ab35206873c67bb9c17affa7bc6082fb68b8102a47bb6b40a0ec374fbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking alfred v4.0.1
[INFO] [stderr]     Checking sc4 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/main.rs:13:42
[INFO] [stdout]    |
[INFO] [stdout] 13 |     static ref REGEX_SNAKE_CASE: Regex = { Regex::new("^[a-z]+((_[a-z]+)+$|$)").unwrap() };
[INFO] [stdout]    |                                          ^^                                             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 13 -     static ref REGEX_SNAKE_CASE: Regex = { Regex::new("^[a-z]+((_[a-z]+)+$|$)").unwrap() };
[INFO] [stdout] 13 +     static ref REGEX_SNAKE_CASE: Regex = Regex::new("^[a-z]+((_[a-z]+)+$|$)").unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/main.rs:14:42
[INFO] [stdout]    |
[INFO] [stdout] 14 |     static ref REGEX_CAMEL_CASE: Regex = { Regex::new("^([A-Z][a-z]*)+$").unwrap() };
[INFO] [stdout]    |                                          ^^                                       ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 14 -     static ref REGEX_CAMEL_CASE: Regex = { Regex::new("^([A-Z][a-z]*)+$").unwrap() };
[INFO] [stdout] 14 +     static ref REGEX_CAMEL_CASE: Regex = Regex::new("^([A-Z][a-z]*)+$").unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/main.rs:15:42
[INFO] [stdout]    |
[INFO] [stdout] 15 |     static ref REGEX_KEBAB_CASE: Regex = { Regex::new("^[a-z]+((-[a-z]+)+$|$)").unwrap() };
[INFO] [stdout]    |                                          ^^                                             ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 15 -     static ref REGEX_KEBAB_CASE: Regex = { Regex::new("^[a-z]+((-[a-z]+)+$|$)").unwrap() };
[INFO] [stdout] 15 +     static ref REGEX_KEBAB_CASE: Regex = Regex::new("^[a-z]+((-[a-z]+)+$|$)").unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/main.rs:16:53
[INFO] [stdout]    |
[INFO] [stdout] 16 |     static ref REGEX_CAMEL_CASE_BREAK_DOWN: Regex = { Regex::new("[A-Z][a-z]*").unwrap() };
[INFO] [stdout]    |                                                     ^^                                  ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 16 -     static ref REGEX_CAMEL_CASE_BREAK_DOWN: Regex = { Regex::new("[A-Z][a-z]*").unwrap() };
[INFO] [stdout] 16 +     static ref REGEX_CAMEL_CASE_BREAK_DOWN: Regex = Regex::new("[A-Z][a-z]*").unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/main.rs:13:42
[INFO] [stdout]    |
[INFO] [stdout] 13 |     static ref REGEX_SNAKE_CASE: Regex = { Regex::new("^[a-z]+((_[a-z]+)+$|$)").unwrap() };
[INFO] [stdout]    |                                          ^^                                             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 13 -     static ref REGEX_SNAKE_CASE: Regex = { Regex::new("^[a-z]+((_[a-z]+)+$|$)").unwrap() };
[INFO] [stdout] 13 +     static ref REGEX_SNAKE_CASE: Regex = Regex::new("^[a-z]+((_[a-z]+)+$|$)").unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/main.rs:14:42
[INFO] [stdout]    |
[INFO] [stdout] 14 |     static ref REGEX_CAMEL_CASE: Regex = { Regex::new("^([A-Z][a-z]*)+$").unwrap() };
[INFO] [stdout]    |                                          ^^                                       ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 14 -     static ref REGEX_CAMEL_CASE: Regex = { Regex::new("^([A-Z][a-z]*)+$").unwrap() };
[INFO] [stdout] 14 +     static ref REGEX_CAMEL_CASE: Regex = Regex::new("^([A-Z][a-z]*)+$").unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/main.rs:15:42
[INFO] [stdout]    |
[INFO] [stdout] 15 |     static ref REGEX_KEBAB_CASE: Regex = { Regex::new("^[a-z]+((-[a-z]+)+$|$)").unwrap() };
[INFO] [stdout]    |                                          ^^                                             ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 15 -     static ref REGEX_KEBAB_CASE: Regex = { Regex::new("^[a-z]+((-[a-z]+)+$|$)").unwrap() };
[INFO] [stdout] 15 +     static ref REGEX_KEBAB_CASE: Regex = Regex::new("^[a-z]+((-[a-z]+)+$|$)").unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/main.rs:16:53
[INFO] [stdout]    |
[INFO] [stdout] 16 |     static ref REGEX_CAMEL_CASE_BREAK_DOWN: Regex = { Regex::new("[A-Z][a-z]*").unwrap() };
[INFO] [stdout]    |                                                     ^^                                  ^^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 16 -     static ref REGEX_CAMEL_CASE_BREAK_DOWN: Regex = { Regex::new("[A-Z][a-z]*").unwrap() };
[INFO] [stdout] 16 +     static ref REGEX_CAMEL_CASE_BREAK_DOWN: Regex = Regex::new("[A-Z][a-z]*").unwrap() ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/main.rs:119:32
[INFO] [stdout]     |
[INFO] [stdout] 119 |             _ => vec![self.text.borrow()],
[INFO] [stdout]     |                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/main.rs:119:32
[INFO] [stdout]     |
[INFO] [stdout] 119 |             _ => vec![self.text.borrow()],
[INFO] [stdout]     |                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.44s
[INFO] running `Command { std: "docker" "inspect" "bca0f1ab35206873c67bb9c17affa7bc6082fb68b8102a47bb6b40a0ec374fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bca0f1ab35206873c67bb9c17affa7bc6082fb68b8102a47bb6b40a0ec374fbb", kill_on_drop: false }`
[INFO] [stdout] bca0f1ab35206873c67bb9c17affa7bc6082fb68b8102a47bb6b40a0ec374fbb
