[INFO] updating cached repository https://github.com/christiansakai/monkey
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/christiansakai/monkey
[INFO] [stderr]  + 202ddfa...c66d294 master     -> master  (forced update)
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c66d2943446e89a0df44aefae0b36959d41c53d3
[INFO] checking christiansakai/monkey against try#e922e6444795ab795fab1943288aee3d543699b8 for pr-66852
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchristiansakai%2Fmonkey" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/christiansakai/monkey on toolchain e922e6444795ab795fab1943288aee3d543699b8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/christiansakai/monkey
[INFO] finished tweaking git repo https://github.com/christiansakai/monkey
[INFO] tweaked toml for git repo https://github.com/christiansakai/monkey written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/christiansakai/monkey already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+e922e6444795ab795fab1943288aee3d543699b8" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ee7d0df84986cf7329d1c8fca956d3211a523393e649a7b64430110b7cf2a3d7
[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" "ee7d0df84986cf7329d1c8fca956d3211a523393e649a7b64430110b7cf2a3d7"`
[INFO] [stderr]     Checking monkey v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]    --> src/lexer.rs:109:9
[INFO] [stderr]     |
[INFO] [stderr] 109 |         while true {
[INFO] [stderr]     |         ^^^^^^^^^^ help: use `loop`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(while_true)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]    --> src/lexer.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         while true {
[INFO] [stderr]     |         ^^^^^^^^^^ help: use `loop`
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]    --> src/lexer.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |         while true {
[INFO] [stderr]     |         ^^^^^^^^^^ help: use `loop`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ILLEGAL`
[INFO] [stderr]   --> src/token.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     ILLEGAL,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `EOF`
[INFO] [stderr]   --> src/token.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     EOF,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `IDENT`
[INFO] [stderr]   --> src/token.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     IDENT,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `INT`
[INFO] [stderr]   --> src/token.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     INT,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ASSIGN`
[INFO] [stderr]   --> src/token.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     ASSIGN,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PLUS`
[INFO] [stderr]   --> src/token.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     PLUS,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `COMMA`
[INFO] [stderr]   --> src/token.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     COMMA,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SEMICOLON`
[INFO] [stderr]   --> src/token.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     SEMICOLON,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LPAREN`
[INFO] [stderr]   --> src/token.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     LPAREN,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RPAREN`
[INFO] [stderr]   --> src/token.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     RPAREN,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LBRACE`
[INFO] [stderr]   --> src/token.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     LBRACE,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RBRACE`
[INFO] [stderr]   --> src/token.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     RBRACE,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FUNCTION`
[INFO] [stderr]   --> src/token.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     FUNCTION,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LET`
[INFO] [stderr]   --> src/token.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     LET,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lexer`
[INFO] [stderr]  --> src/lexer.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Lexer<'a> {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/lexer.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn new(string: &'a str) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_token`
[INFO] [stderr]   --> src/lexer.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn next_token (&mut self) -> Token {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `skip_whitespace`
[INFO] [stderr]    --> src/lexer.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn skip_whitespace(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_identifier`
[INFO] [stderr]    --> src/lexer.rs:122:5
[INFO] [stderr]     |
[INFO] [stderr] 122 |     fn read_identifier(&mut self, start_ch: char) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_number`
[INFO] [stderr]    --> src/lexer.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     fn read_number(&mut self, start_ch: char) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_whitespace`
[INFO] [stderr]    --> src/lexer.rs:161:4
[INFO] [stderr]     |
[INFO] [stderr] 161 | fn is_whitespace(ch: char) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_letter`
[INFO] [stderr]    --> src/lexer.rs:165:4
[INFO] [stderr]     |
[INFO] [stderr] 165 | fn is_letter(ch: char) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_digit`
[INFO] [stderr]    --> src/lexer.rs:169:4
[INFO] [stderr]     |
[INFO] [stderr] 169 | fn is_digit(ch: char) -> bool {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_type`
[INFO] [stderr]    --> src/lexer.rs:173:4
[INFO] [stderr]     |
[INFO] [stderr] 173 | fn get_type(string: &str) -> TokenType {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]    --> src/lexer.rs:109:9
[INFO] [stderr]     |
[INFO] [stderr] 109 |         while true {
[INFO] [stderr]     |         ^^^^^^^^^^ help: use `loop`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(while_true)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]    --> src/lexer.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         while true {
[INFO] [stderr]     |         ^^^^^^^^^^ help: use `loop`
[INFO] [stderr] 
[INFO] [stderr] warning: denote infinite loops with `loop { ... }`
[INFO] [stderr]    --> src/lexer.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |         while true {
[INFO] [stderr]     |         ^^^^^^^^^^ help: use `loop`
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]    --> src/lexer.rs:231:27
[INFO] [stderr]     |
[INFO] [stderr] 231 |         for test in tests.into_iter() {
[INFO] [stderr]     |                           ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: this method call currently resolves to `<&[T] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]    --> src/lexer.rs:403:27
[INFO] [stderr]     |
[INFO] [stderr] 403 |         for test in tests.into_iter() {
[INFO] [stderr]     |                           ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.52s
[INFO] running `"docker" "inspect" "ee7d0df84986cf7329d1c8fca956d3211a523393e649a7b64430110b7cf2a3d7"`
[INFO] running `"docker" "rm" "-f" "ee7d0df84986cf7329d1c8fca956d3211a523393e649a7b64430110b7cf2a3d7"`
[INFO] [stdout] ee7d0df84986cf7329d1c8fca956d3211a523393e649a7b64430110b7cf2a3d7