[INFO] fetching crate rflex 0.7.0...
[INFO] testing rflex-0.7.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate rflex 0.7.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rflex 0.7.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rflex 0.7.0
[INFO] finished tweaking crates.io crate rflex 0.7.0
[INFO] tweaked toml for crates.io crate rflex 0.7.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate rflex 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 2d8f9ccac3872c7c70c18cb659fad771725b82c8ef27ad040687c13549a9a64c
[INFO] running `Command { std: "docker" "start" "-a" "2d8f9ccac3872c7c70c18cb659fad771725b82c8ef27ad040687c13549a9a64c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d8f9ccac3872c7c70c18cb659fad771725b82c8ef27ad040687c13549a9a64c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d8f9ccac3872c7c70c18cb659fad771725b82c8ef27ad040687c13549a9a64c", kill_on_drop: false }`
[INFO] [stdout] 2d8f9ccac3872c7c70c18cb659fad771725b82c8ef27ad040687c13549a9a64c
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d1a498d58733adf3340c0b353adb7e4004e1eb0bf5974cf5a9431f29193b25e
[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" "6d1a498d58733adf3340c0b353adb7e4004e1eb0bf5974cf5a9431f29193b25e", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] Compiling syn v1.0.52
[INFO] [stderr] Compiling liquid-error v0.16.1
[INFO] [stderr] Compiling fixedbitset v0.1.9
[INFO] [stderr] Compiling itertools v0.7.11
[INFO] [stderr] Compiling time v0.1.44
[INFO] [stderr] Compiling num-integer v0.1.44
[INFO] [stderr] Compiling backtrace v0.3.55
[INFO] [stderr] Compiling chrono v0.4.19
[INFO] [stderr] Compiling synstructure v0.12.4
[INFO] [stderr] Compiling serde_derive v1.0.117
[INFO] [stderr] Compiling failure_derive v0.1.8
[INFO] [stderr] Compiling failure v0.1.8
[INFO] [stderr] Compiling serde v1.0.117
[INFO] [stderr] Compiling liquid-value v0.17.1
[INFO] [stderr] Compiling liquid-interpreter v0.17.1
[INFO] [stderr] Compiling liquid-compiler v0.17.1
[INFO] [stderr] Compiling liquid v0.17.1
[INFO] [stderr] Compiling rflex v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `set_end`
[INFO] [stdout] --> src/charclasses.rs:22:12
[INFO] [stdout] |
[INFO] [stdout] 22 | pub fn set_end(&mut self, end: usize) {
[INFO] [stdout] | ^^^^^^^
[INFO] [stdout] |
[INFO] [stdout] = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: associated function is never used: `set_start`
[INFO] [stdout] --> src/charclasses.rs:26:12
[INFO] [stdout] |
[INFO] [stdout] 26 | pub fn set_start(&mut self, start: usize) {
[INFO] [stdout] | ^^^^^^^^^
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: associated function is never used: `add_char`
[INFO] [stdout] --> src/charclasses.rs:155:12
[INFO] [stdout] |
[INFO] [stdout] 155 | pub fn add_char(&mut self, c: usize) {
[INFO] [stdout] | ^^^^^^^^
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: associated function is never used: `get_max_char_code`
[INFO] [stdout] --> src/charclasses.rs:396:12
[INFO] [stdout] |
[INFO] [stdout] 396 | pub fn get_max_char_code(&self) -> usize {
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: associated function is never used: `set_max_char_code`
[INFO] [stdout] --> src/charclasses.rs:400:12
[INFO] [stdout] |
[INFO] [stdout] 400 | pub fn set_max_char_code(&mut self, max_char_code: usize) {
[INFO] [stdout] | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: associated function is never used: `to_string_i`
[INFO] [stdout] --> src/charclasses.rs:511:12
[INFO] [stdout] |
[INFO] [stdout] 511 | pub fn to_string_i(&self, index: usize) -> String {
[INFO] [stdout] | ^^^^^^^^^^^
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: associated function is never used: `write_dot`
[INFO] [stdout] --> src/dfa.rs:480:12
[INFO] [stdout] |
[INFO] [stdout] 480 | pub fn write_dot(&self) -> String {
[INFO] [stdout] | ^^^^^^^^^
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: associated function is never used: `dump`
[INFO] [stdout] --> src/dfa.rs:503:12
[INFO] [stdout] |
[INFO] [stdout] 503 | pub fn dump(&self) -> String {
[INFO] [stdout] | ^^^^
[INFO] [stdout]
[INFO] [stdout]
[INFO] [stdout] warning: associated function is never used: `dump_epsilon`
[INFO] [stdout] --> src/nfa.rs:528:8
[INFO] [stdout] |
[INFO] [stdout] 528 | fn dump_epsilon(&self, epsilon: Vec