[INFO] updating cached repository ogata-k/monkey-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ogata-k/monkey-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ogata-k/monkey-rs" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/ogata-k/monkey-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/ogata-k/monkey-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ogata-k/monkey-rs" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/ogata-k/monkey-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/ogata-k/monkey-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 498032ecb179f2079756f777f6cbaff821d74de0
[INFO] sha for GitHub repo ogata-k/monkey-rs: 498032ecb179f2079756f777f6cbaff821d74de0
[INFO] validating manifest of ogata-k/monkey-rs on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ogata-k/monkey-rs on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ogata-k/monkey-rs
[INFO] finished frobbing ogata-k/monkey-rs
[INFO] frobbed toml for ogata-k/monkey-rs written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/ogata-k/monkey-rs/Cargo.toml
[INFO] started frobbing ogata-k/monkey-rs
[INFO] finished frobbing ogata-k/monkey-rs
[INFO] frobbed toml for ogata-k/monkey-rs written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/ogata-k/monkey-rs/Cargo.toml
[INFO] crate ogata-k/monkey-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ogata-k/monkey-rs against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/ogata-k/monkey-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4bc6f3b4d1e6c1c912ad47e24a55e26d1f1be9c6c36db012dbc936796b61dca2
[INFO] running `"docker" "start" "-a" "4bc6f3b4d1e6c1c912ad47e24a55e26d1f1be9c6c36db012dbc936796b61dca2"`
[INFO] [stderr]     Checking monkey-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: irrefutable while-let pattern
[INFO] [stderr]   --> src/repl.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 | /         while let tok = lexer.next_token() {
[INFO] [stderr] 35 | |             if tok.token_type_is(TokenType::EOF) {
[INFO] [stderr] 36 | |                 break;
[INFO] [stderr] 37 | |             }
[INFO] [stderr] ...  |
[INFO] [stderr] 41 | |             write!(w, "{:?}\n", tok).unwrap();
[INFO] [stderr] 42 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tok` is never read
[INFO] [stderr]    --> src/lexer.rs:109:17
[INFO] [stderr]     |
[INFO] [stderr] 109 |         let mut tok: Option<Token> = None;
[INFO] [stderr]     |                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_token_is_prefix`
[INFO] [stderr]   --> src/parser.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn peek_token_is_prefix(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_prefix_precedence`
[INFO] [stderr]    --> src/parser.rs:125:5
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn peek_prefix_precedence(&self) -> Opt {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: irrefutable while-let pattern
[INFO] [stderr]   --> src/repl.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 | /         while let tok = lexer.next_token() {
[INFO] [stderr] 35 | |             if tok.token_type_is(TokenType::EOF) {
[INFO] [stderr] 36 | |                 break;
[INFO] [stderr] 37 | |             }
[INFO] [stderr] ...  |
[INFO] [stderr] 41 | |             write!(w, "{:?}\n", tok).unwrap();
[INFO] [stderr] 42 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tok` is never read
[INFO] [stderr]    --> src/lexer.rs:109:17
[INFO] [stderr]     |
[INFO] [stderr] 109 |         let mut tok: Option<Token> = None;
[INFO] [stderr]     |                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_token_is_prefix`
[INFO] [stderr]   --> src/parser.rs:98:5
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn peek_token_is_prefix(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_prefix_precedence`
[INFO] [stderr]    --> src/parser.rs:125:5
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn peek_prefix_precedence(&self) -> Opt {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `"docker" "inspect" "4bc6f3b4d1e6c1c912ad47e24a55e26d1f1be9c6c36db012dbc936796b61dca2"`
[INFO] running `"docker" "rm" "-f" "4bc6f3b4d1e6c1c912ad47e24a55e26d1f1be9c6c36db012dbc936796b61dca2"`
[INFO] [stdout] 4bc6f3b4d1e6c1c912ad47e24a55e26d1f1be9c6c36db012dbc936796b61dca2