[INFO] fetching crate cpp_rs 0.1.0...
[INFO] checking cpp_rs-0.1.0 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate cpp_rs 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cpp_rs 0.1.0 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cpp_rs 0.1.0
[INFO] finished tweaking crates.io crate cpp_rs 0.1.0
[INFO] tweaked toml for crates.io crate cpp_rs 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d2531f839af6adb61df8c671b57e110f4c9cea16ab129a4ded088349892d5e8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6d2531f839af6adb61df8c671b57e110f4c9cea16ab129a4ded088349892d5e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d2531f839af6adb61df8c671b57e110f4c9cea16ab129a4ded088349892d5e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d2531f839af6adb61df8c671b57e110f4c9cea16ab129a4ded088349892d5e8", kill_on_drop: false }`
[INFO] [stdout] 6d2531f839af6adb61df8c671b57e110f4c9cea16ab129a4ded088349892d5e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 588c6b9d9289c3f5f7209fa2ed76f4ad37a6a615814b7865fa36f4a717844fb2
[INFO] running `Command { std: "docker" "start" "-a" "588c6b9d9289c3f5f7209fa2ed76f4ad37a6a615814b7865fa36f4a717844fb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking cpp_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]  --> src/lexer/tests/escape_newline_tests.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lexer::{Error, StrTokenizer, Token, TokenType, Tokenizer};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StringSource`
[INFO] [stdout]  --> src/lexer/tests/generative_multi_token_tests.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::lexer::{OwningTokenizer, StringSource, Token, TokenType, Tokenizer};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::lexer::char_source::StrSource`
[INFO] [stdout]  --> src/lexer/tests/single_token_tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lexer::char_source::StrSource;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TokenStream`
[INFO] [stdout]    --> src/lib.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | struct TokenStream {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TokenStream`
[INFO] [stdout]    --> src/lib.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | struct TokenStream {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_line_comment_with_EOL` should have a snake case name
[INFO] [stdout]    --> src/lexer/tests/basic_multi_token_tests.rs:785:4
[INFO] [stdout]     |
[INFO] [stdout] 785 | fn test_line_comment_with_EOL() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_line_comment_with_eol`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.25s
[INFO] running `Command { std: "docker" "inspect" "588c6b9d9289c3f5f7209fa2ed76f4ad37a6a615814b7865fa36f4a717844fb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "588c6b9d9289c3f5f7209fa2ed76f4ad37a6a615814b7865fa36f4a717844fb2", kill_on_drop: false }`
[INFO] [stdout] 588c6b9d9289c3f5f7209fa2ed76f4ad37a6a615814b7865fa36f4a717844fb2