[INFO] fetching crate cpp_rs 0.1.0...
[INFO] checking cpp_rs-0.1.0 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate cpp_rs 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cpp_rs 0.1.0 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", 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] 8282eda3d6f84c44c06ef6551d0de6deae875491c511e1dd0d1d812b5620be96
[INFO] running `Command { std: "docker" "start" "-a" "8282eda3d6f84c44c06ef6551d0de6deae875491c511e1dd0d1d812b5620be96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8282eda3d6f84c44c06ef6551d0de6deae875491c511e1dd0d1d812b5620be96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8282eda3d6f84c44c06ef6551d0de6deae875491c511e1dd0d1d812b5620be96", kill_on_drop: false }`
[INFO] [stdout] 8282eda3d6f84c44c06ef6551d0de6deae875491c511e1dd0d1d812b5620be96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7407d3dd7ce7fd3a4981d81f81548fa0fe240c353a0f503c51c490ae96473363
[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" "7407d3dd7ce7fd3a4981d81f81548fa0fe240c353a0f503c51c490ae96473363", kill_on_drop: false }`
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking env_logger v0.6.2
[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 2.88s
[INFO] running `Command { std: "docker" "inspect" "7407d3dd7ce7fd3a4981d81f81548fa0fe240c353a0f503c51c490ae96473363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7407d3dd7ce7fd3a4981d81f81548fa0fe240c353a0f503c51c490ae96473363", kill_on_drop: false }`
[INFO] [stdout] 7407d3dd7ce7fd3a4981d81f81548fa0fe240c353a0f503c51c490ae96473363