[INFO] cloning repository https://github.com/Heroadn/simple_context_free_grammar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Heroadn/simple_context_free_grammar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHeroadn%2Fsimple_context_free_grammar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHeroadn%2Fsimple_context_free_grammar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f1eb2c927a75f47e7536aaa28e4204ef90f1243
[INFO] testing Heroadn/simple_context_free_grammar against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHeroadn%2Fsimple_context_free_grammar" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Heroadn/simple_context_free_grammar on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Heroadn/simple_context_free_grammar
[INFO] finished tweaking git repo https://github.com/Heroadn/simple_context_free_grammar
[INFO] tweaked toml for git repo https://github.com/Heroadn/simple_context_free_grammar written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Heroadn/simple_context_free_grammar already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 353498d4ca627146de9f22ab06aa7666cc54c686885baac59cb68f002d911b3f
[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" "353498d4ca627146de9f22ab06aa7666cc54c686885baac59cb68f002d911b3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "353498d4ca627146de9f22ab06aa7666cc54c686885baac59cb68f002d911b3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "353498d4ca627146de9f22ab06aa7666cc54c686885baac59cb68f002d911b3f", kill_on_drop: false }`
[INFO] [stdout] 353498d4ca627146de9f22ab06aa7666cc54c686885baac59cb68f002d911b3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--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] 3f1a15199b0acfb04f32e6790bfd961f2ec11ba7d4cab6d10aaada965cf919b7
[INFO] running `Command { std: "docker" "start" "-a" "3f1a15199b0acfb04f32e6790bfd961f2ec11ba7d4cab6d10aaada965cf919b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling cfg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `find_token`
[INFO] [stdout]   --> src/cfg.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn find_token(tokens: String, lookahead: String) -> Option<String> {
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.56s
[INFO] running `Command { std: "docker" "inspect" "3f1a15199b0acfb04f32e6790bfd961f2ec11ba7d4cab6d10aaada965cf919b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f1a15199b0acfb04f32e6790bfd961f2ec11ba7d4cab6d10aaada965cf919b7", kill_on_drop: false }`
[INFO] [stdout] 3f1a15199b0acfb04f32e6790bfd961f2ec11ba7d4cab6d10aaada965cf919b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1aff949a19af4840f15c16b7717090b1bc73391a821342a046d7958961fbb33
[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" "f1aff949a19af4840f15c16b7717090b1bc73391a821342a046d7958961fbb33", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `find_token`
[INFO] [stdout]   --> src/cfg.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn find_token(tokens: String, lookahead: String) -> Option<String> {
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "f1aff949a19af4840f15c16b7717090b1bc73391a821342a046d7958961fbb33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1aff949a19af4840f15c16b7717090b1bc73391a821342a046d7958961fbb33", kill_on_drop: false }`
[INFO] [stdout] f1aff949a19af4840f15c16b7717090b1bc73391a821342a046d7958961fbb33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 32ef9ee1160d8693b28f4089a8e3aff963b0b6ecb580a57a17ad4a06a2251303
[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" "32ef9ee1160d8693b28f4089a8e3aff963b0b6ecb580a57a17ad4a06a2251303", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: function is never used: `find_token`
[INFO] [stderr]   --> src/cfg.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn find_token(tokens: String, lookahead: String) -> Option<String> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cfg` (bin "cfg" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cfg-a2d752662ae6302c)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "32ef9ee1160d8693b28f4089a8e3aff963b0b6ecb580a57a17ad4a06a2251303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32ef9ee1160d8693b28f4089a8e3aff963b0b6ecb580a57a17ad4a06a2251303", kill_on_drop: false }`
[INFO] [stdout] 32ef9ee1160d8693b28f4089a8e3aff963b0b6ecb580a57a17ad4a06a2251303