[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] testing samuwen/c_compiler against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsamuwen%2Fc_compiler" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samuwen/c_compiler on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", 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-12/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 454c3a3c9d1b281bed7499ec28ea96b7bdc8efba69647dd00f1d4770f181472d
[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" "454c3a3c9d1b281bed7499ec28ea96b7bdc8efba69647dd00f1d4770f181472d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "454c3a3c9d1b281bed7499ec28ea96b7bdc8efba69647dd00f1d4770f181472d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "454c3a3c9d1b281bed7499ec28ea96b7bdc8efba69647dd00f1d4770f181472d", kill_on_drop: false }`
[INFO] [stdout] 454c3a3c9d1b281bed7499ec28ea96b7bdc8efba69647dd00f1d4770f181472d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 127a92062bfc3f996c6d245493be4b36a712b8b98ec2473c79a5b94457ea0f0f
[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" "127a92062bfc3f996c6d245493be4b36a712b8b98ec2473c79a5b94457ea0f0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling bindgen v0.55.1
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling clang-sys v1.0.1
[INFO] [stderr]    Compiling libloading v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling aho-corasick v0.7.14
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling thiserror v1.0.21
[INFO] [stderr]    Compiling flexi_logger v0.16.1
[INFO] [stderr]    Compiling onig_sys v69.5.1
[INFO] [stderr]    Compiling onig v6.1.0
[INFO] [stderr]    Compiling 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: 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 49s
[INFO] running `Command { std: "docker" "inspect" "127a92062bfc3f996c6d245493be4b36a712b8b98ec2473c79a5b94457ea0f0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "127a92062bfc3f996c6d245493be4b36a712b8b98ec2473c79a5b94457ea0f0f", kill_on_drop: false }`
[INFO] [stdout] 127a92062bfc3f996c6d245493be4b36a712b8b98ec2473c79a5b94457ea0f0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3ee79c61318f0edd4af2c2ce01dfb4de529feaa2ae47a0121650668aa8a387e
[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" "a3ee79c61318f0edd4af2c2ce01dfb4de529feaa2ae47a0121650668aa8a387e", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.56s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a3ee79c61318f0edd4af2c2ce01dfb4de529feaa2ae47a0121650668aa8a387e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3ee79c61318f0edd4af2c2ce01dfb4de529feaa2ae47a0121650668aa8a387e", kill_on_drop: false }`
[INFO] [stdout] a3ee79c61318f0edd4af2c2ce01dfb4de529feaa2ae47a0121650668aa8a387e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 25e60c74ed8bbd7a8430bcb8a1308cbef15ad8607703e4d943ceaa1b3957d130
[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" "25e60c74ed8bbd7a8430bcb8a1308cbef15ad8607703e4d943ceaa1b3957d130", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/parser.rs:606:18
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 606 | fn parse_postfix(tokens: &mut Vec<Token>) -> Node<String> {
[INFO] [stdout] 
[INFO] [stderr]     |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_function_keyword`
[INFO] [stderr]    --> src/token.rs:186:10
[INFO] [stderr]     |
[INFO] [stderr] 186 |   pub fn is_function_keyword(&self) -> bool {
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/c_compiler-113b48c02958ab78
[INFO] running `Command { std: "docker" "inspect" "25e60c74ed8bbd7a8430bcb8a1308cbef15ad8607703e4d943ceaa1b3957d130", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25e60c74ed8bbd7a8430bcb8a1308cbef15ad8607703e4d943ceaa1b3957d130", kill_on_drop: false }`
[INFO] [stdout] 25e60c74ed8bbd7a8430bcb8a1308cbef15ad8607703e4d943ceaa1b3957d130