[INFO] cloning repository https://github.com/walac/cool-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/walac/cool-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalac%2Fcool-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalac%2Fcool-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 08f49bc7a724e521d01fe1a2eaecd917ab62d1cf
[INFO] checking walac/cool-rs against master#0c478fdfe138a8b09744798c85fe2be657768b00 for pr-139419
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalac%2Fcool-rs" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/walac/cool-rs on toolchain 0c478fdfe138a8b09744798c85fe2be657768b00
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0c478fdfe138a8b09744798c85fe2be657768b00" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/walac/cool-rs
[INFO] finished tweaking git repo https://github.com/walac/cool-rs
[INFO] tweaked toml for git repo https://github.com/walac/cool-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/walac/cool-rs 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" "+0c478fdfe138a8b09744798c85fe2be657768b00" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0c478fdfe138a8b09744798c85fe2be657768b00" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e61fd65823be3c702761933560164469e3f634a947932293445aa5bc5f97427
[INFO] running `Command { std: "docker" "start" "-a" "0e61fd65823be3c702761933560164469e3f634a947932293445aa5bc5f97427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e61fd65823be3c702761933560164469e3f634a947932293445aa5bc5f97427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e61fd65823be3c702761933560164469e3f634a947932293445aa5bc5f97427", kill_on_drop: false }`
[INFO] [stdout] 0e61fd65823be3c702761933560164469e3f634a947932293445aa5bc5f97427
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+0c478fdfe138a8b09744798c85fe2be657768b00" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 687b023735c7a3f8d0e690803d4713971ab7fbd0de44b997f305bf2c88b9cf7e
[INFO] running `Command { std: "docker" "start" "-a" "687b023735c7a3f8d0e690803d4713971ab7fbd0de44b997f305bf2c88b9cf7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking encoding8 v0.3.2
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking cool-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `kind`, `line`, and `col` are never read
[INFO] [stdout]    --> src/lexer.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 204 | pub struct Token {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 205 |     pub kind: TokenKind,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 206 |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 207 |     pub col: usize,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lexer.rs:235:12
[INFO] [stdout]     |
[INFO] [stdout] 232 | impl<'a> Tokenizer<'a> {
[INFO] [stdout]     | ---------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 235 |     pub fn new(src: &'a str) -> Tokenizer<'a> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `filename` is never read
[INFO] [stdout]   --> tests/test_lexer.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct LexerOutput<R: Read> {
[INFO] [stdout]    |        ----------- field in this struct
[INFO] [stdout] 20 |     pub filename: String,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `col` is never read
[INFO] [stdout]    --> tests/../src/lexer.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 204 | pub struct Token {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 207 |     pub col: usize,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_lexer.rs:78:30
[INFO] [stdout]    |
[INFO] [stdout] 78 |             Err(e) => panic!(e),
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 78 |             Err(e) => panic!("{}", e),
[INFO] [stdout]    |                              +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 78 -             Err(e) => panic!(e),
[INFO] [stdout] 78 +             Err(e) => std::panic::panic_any(e),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `kind`, `line`, and `col` are never read
[INFO] [stdout]    --> src/lexer.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 204 | pub struct Token {
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] 205 |     pub kind: TokenKind,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 206 |     pub line: usize,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 207 |     pub col: usize,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lexer.rs:235:12
[INFO] [stdout]     |
[INFO] [stdout] 232 | impl<'a> Tokenizer<'a> {
[INFO] [stdout]     | ---------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 235 |     pub fn new(src: &'a str) -> Tokenizer<'a> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.33s
[INFO] running `Command { std: "docker" "inspect" "687b023735c7a3f8d0e690803d4713971ab7fbd0de44b997f305bf2c88b9cf7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "687b023735c7a3f8d0e690803d4713971ab7fbd0de44b997f305bf2c88b9cf7e", kill_on_drop: false }`
[INFO] [stdout] 687b023735c7a3f8d0e690803d4713971ab7fbd0de44b997f305bf2c88b9cf7e