[INFO] crate rflex 0.6.0 is already in cache
[INFO] testing rflex-0.6.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate rflex 0.6.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rflex 0.6.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rflex 0.6.0
[INFO] finished tweaking crates.io crate rflex 0.6.0
[INFO] tweaked toml for crates.io crate rflex 0.6.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate rflex 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa465ef299b8511524f360cbd869fe712864827a33e7f49d4323b949ab00680c
[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" "aa465ef299b8511524f360cbd869fe712864827a33e7f49d4323b949ab00680c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa465ef299b8511524f360cbd869fe712864827a33e7f49d4323b949ab00680c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa465ef299b8511524f360cbd869fe712864827a33e7f49d4323b949ab00680c", kill_on_drop: false }`
[INFO] [stdout] aa465ef299b8511524f360cbd869fe712864827a33e7f49d4323b949ab00680c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e96fe28e5396ce37f61db5af880fad25ea35b9d95cb578467b5717db23f2d27
[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" "8e96fe28e5396ce37f61db5af880fad25ea35b9d95cb578467b5717db23f2d27", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] Compiling proc-macro2 v0.4.27
[INFO] [stderr] Compiling syn v0.15.30
[INFO] [stderr] Compiling libc v0.2.51
[INFO] [stderr] Compiling num-traits v0.2.6
[INFO] [stderr] Compiling num-integer v0.1.39
[INFO] [stderr] Compiling serde v1.0.90
[INFO] [stderr] Compiling memchr v2.2.0
[INFO] [stderr] Compiling cc v1.0.37
[INFO] [stderr] Compiling regex v1.1.5
[INFO] [stderr] Compiling ucd-util v0.1.3
[INFO] [stderr] Compiling liquid-error v0.16.1
[INFO] [stderr] Compiling smallvec v0.6.9
[INFO] [stderr] Compiling failure_derive v0.1.5
[INFO] [stderr] Compiling utf8-ranges v1.0.2
[INFO] [stderr] Compiling cfg-if v0.1.9
[INFO] [stderr] Compiling rustc-demangle v0.1.15
[INFO] [stderr] Compiling unicode-segmentation v1.2.1
[INFO] [stderr] Compiling itertools v0.7.11
[INFO] [stderr] Compiling thread_local v0.3.6
[INFO] [stderr] Compiling regex-syntax v0.6.6
[INFO] [stderr] Compiling unicode-normalization v0.1.8
[INFO] [stderr] Compiling quote v0.6.11
[INFO] [stderr] Compiling aho-corasick v0.7.3
[INFO] [stderr] Compiling time v0.1.42
[INFO] [stderr] Compiling backtrace-sys v0.1.29
[INFO] [stderr] Compiling backtrace v0.3.32
[INFO] [stderr] Compiling idna v0.1.5
[INFO] [stderr] Compiling chrono v0.4.6
[INFO] [stderr] Compiling url v1.7.2
[INFO] [stderr] Compiling synstructure v0.10.2
[INFO] [stderr] Compiling serde_derive v1.0.90
[INFO] [stderr] Compiling failure v0.1.5
[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 v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] --> src/error.rs:29:32
[INFO] [stdout] |
[INFO] [stdout] 29 | fn cause(&self) -> Option<&Fail> {
[INFO] [stdout] | ^^^^ help: use `dyn`: `dyn Fail`
[INFO] [stdout] |
[INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]
[INFO] [stdout]
[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