[INFO] cloning repository https://github.com/naens/parse-exs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/naens/parse-exs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnaens%2Fparse-exs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnaens%2Fparse-exs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0b66bd3c7571db8a852ae86015a48aa1388f96f2
[INFO] checking naens/parse-exs against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnaens%2Fparse-exs" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/naens/parse-exs on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/naens/parse-exs
[INFO] finished tweaking git repo https://github.com/naens/parse-exs
[INFO] tweaked toml for git repo https://github.com/naens/parse-exs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/naens/parse-exs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] acd17fd2218dfc5e6f9535089c0295b5f15fd2e2baa41d0b00ed76a4a9c6852e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "acd17fd2218dfc5e6f9535089c0295b5f15fd2e2baa41d0b00ed76a4a9c6852e"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking parse-exs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]   --> src/regex.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
[INFO] [stderr]    |            ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `se`
[INFO] [stderr]   --> src/regex.rs:57:31
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
[INFO] [stderr]    |                               ^^ help: consider prefixing with an underscore: `_se`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Not`
[INFO] [stderr]  --> src/regex.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Not(Box<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Plus`
[INFO] [stderr]  --> src/regex.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Plus(Box<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Star`
[INFO] [stderr]  --> src/regex.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Star(Box<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Option`
[INFO] [stderr]  --> src/regex.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Option(Box<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Concat`
[INFO] [stderr]  --> src/regex.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Concat(Vec<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `And`
[INFO] [stderr]   --> src/regex.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     And(BTreeSet<SubElement>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Or`
[INFO] [stderr]   --> src/regex.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Or(BTreeSet<SubElement>)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Operator`
[INFO] [stderr]   --> src/regex.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     Operator(Operator),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SymbolRange`
[INFO] [stderr]   --> src/regex.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     SymbolRange(SymbolRange),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/regex.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     String(Vec<char>)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_not`
[INFO] [stderr]   --> src/regex.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn make_not(se: SubElement) -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_plus`
[INFO] [stderr]   --> src/regex.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn make_plus(se: SubElement) -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_star`
[INFO] [stderr]   --> src/regex.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn make_star(se: SubElement) -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_option`
[INFO] [stderr]   --> src/regex.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn make_option(se: SubElement) -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_concat`
[INFO] [stderr]   --> src/regex.rs:43:1
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn make_concat() -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_and`
[INFO] [stderr]   --> src/regex.rs:47:1
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub fn make_and() -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_or`
[INFO] [stderr]   --> src/regex.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | pub fn make_or() -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sim_add`
[INFO] [stderr]   --> src/regex.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/regex.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn add(&mut self, se: SubElement) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]   --> src/regex.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
[INFO] [stderr]    |            ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `se`
[INFO] [stderr]   --> src/regex.rs:57:31
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
[INFO] [stderr]    |                               ^^ help: consider prefixing with an underscore: `_se`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Not`
[INFO] [stderr]  --> src/regex.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Not(Box<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Plus`
[INFO] [stderr]  --> src/regex.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Plus(Box<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Star`
[INFO] [stderr]  --> src/regex.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Star(Box<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Option`
[INFO] [stderr]  --> src/regex.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Option(Box<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Concat`
[INFO] [stderr]  --> src/regex.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Concat(Vec<SubElement>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `And`
[INFO] [stderr]   --> src/regex.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     And(BTreeSet<SubElement>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Or`
[INFO] [stderr]   --> src/regex.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Or(BTreeSet<SubElement>)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Operator`
[INFO] [stderr]   --> src/regex.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     Operator(Operator),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SymbolRange`
[INFO] [stderr]   --> src/regex.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     SymbolRange(SymbolRange),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]   --> src/regex.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     String(Vec<char>)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_not`
[INFO] [stderr]   --> src/regex.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn make_not(se: SubElement) -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_plus`
[INFO] [stderr]   --> src/regex.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn make_plus(se: SubElement) -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_star`
[INFO] [stderr]   --> src/regex.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn make_star(se: SubElement) -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_option`
[INFO] [stderr]   --> src/regex.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn make_option(se: SubElement) -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_concat`
[INFO] [stderr]   --> src/regex.rs:43:1
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub fn make_concat() -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_and`
[INFO] [stderr]   --> src/regex.rs:47:1
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub fn make_and() -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_or`
[INFO] [stderr]   --> src/regex.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | pub fn make_or() -> Operator {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sim_add`
[INFO] [stderr]   --> src/regex.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn sim_add(op: &mut Operator, se: SubElement) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/regex.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn add(&mut self, se: SubElement) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `"docker" "inspect" "acd17fd2218dfc5e6f9535089c0295b5f15fd2e2baa41d0b00ed76a4a9c6852e"`
[INFO] running `"docker" "rm" "-f" "acd17fd2218dfc5e6f9535089c0295b5f15fd2e2baa41d0b00ed76a4a9c6852e"`
[INFO] [stdout] acd17fd2218dfc5e6f9535089c0295b5f15fd2e2baa41d0b00ed76a4a9c6852e