[INFO] cloning repository https://github.com/samuwen/c_compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/samuwen/c_compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuwen%2Fc_compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuwen%2Fc_compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f733c4a53377b3888536c1ddb467d1223cd1ce97
[INFO] checking samuwen/c_compiler against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuwen%2Fc_compiler" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samuwen/c_compiler on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/samuwen/c_compiler
[INFO] finished tweaking git repo https://github.com/samuwen/c_compiler
[INFO] tweaked toml for git repo https://github.com/samuwen/c_compiler written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/samuwen/c_compiler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc7efaa79b245bc854e81654b58fc4ff70b8f0fa381238b20e9d71e09788c3c1
[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" "dc7efaa79b245bc854e81654b58fc4ff70b8f0fa381238b20e9d71e09788c3c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc7efaa79b245bc854e81654b58fc4ff70b8f0fa381238b20e9d71e09788c3c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc7efaa79b245bc854e81654b58fc4ff70b8f0fa381238b20e9d71e09788c3c1", kill_on_drop: false }`
[INFO] [stdout] dc7efaa79b245bc854e81654b58fc4ff70b8f0fa381238b20e9d71e09788c3c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3063096724c6912ce682a9b6f0c7f45141b9bd6fc87750188c1672786185e3dd
[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" "3063096724c6912ce682a9b6f0c7f45141b9bd6fc87750188c1672786185e3dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling bindgen v0.55.1
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling libloading v0.6.5
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling clang-sys v1.0.1
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking flexi_logger v0.16.1
[INFO] [stderr]    Compiling onig_sys v69.5.1
[INFO] [stderr]     Checking onig v6.1.0
[INFO] [stderr]     Checking c_compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]    --> src/parser.rs:606:18
[INFO] [stdout]     |
[INFO] [stdout] 606 | fn parse_postfix(tokens: &mut Vec<Token>) -> Node<String> {
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]    --> src/parser.rs:606:18
[INFO] [stdout]     |
[INFO] [stdout] 606 | fn parse_postfix(tokens: &mut Vec<Token>) -> Node<String> {
[INFO] [stdout]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_function_keyword`
[INFO] [stdout]    --> src/token.rs:186:10
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn is_function_keyword(&self) -> bool {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_function_keyword`
[INFO] [stdout]    --> src/token.rs:186:10
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn is_function_keyword(&self) -> bool {
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 36s
[INFO] running `Command { std: "docker" "inspect" "3063096724c6912ce682a9b6f0c7f45141b9bd6fc87750188c1672786185e3dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3063096724c6912ce682a9b6f0c7f45141b9bd6fc87750188c1672786185e3dd", kill_on_drop: false }`
[INFO] [stdout] 3063096724c6912ce682a9b6f0c7f45141b9bd6fc87750188c1672786185e3dd