Dec 17 20:34:54.270 INFO checking lonnng/lua-rs against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 20:34:54.270 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/lonnng/lua-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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:34:54.827 INFO [stdout] db0338086d0f4e9d803802af8a154841015babf4b241038642b4fd268335efd2
Dec 17 20:34:54.829 INFO running `"docker" "start" "-a" "db0338086d0f4e9d803802af8a154841015babf4b241038642b4fd268335efd2"`
Dec 17 20:34:56.728 INFO [stderr]     Checking libc v0.2.42
Dec 17 20:34:56.760 INFO [stderr]     Checking byteorder v1.2.3
Dec 17 20:34:59.814 INFO [stderr]     Checking iovec v0.1.2
Dec 17 20:35:00.320 INFO [stderr]     Checking bytes v0.4.8
Dec 17 20:35:01.948 INFO [stderr]     Checking lua v0.1.0 (/opt/crater/workdir)
Dec 17 20:35:02.577 INFO [stderr] warning: unused import: `state::State`
Dec 17 20:35:02.577 INFO [stderr]  --> src/scanner.rs:3:5
Dec 17 20:35:02.577 INFO [stderr]   |
Dec 17 20:35:02.577 INFO [stderr] 3 | use state::State;
Dec 17 20:35:02.577 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 17 20:35:02.577 INFO [stderr]   |
Dec 17 20:35:02.578 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:35:02.578 INFO [stderr] 
Dec 17 20:35:02.578 INFO [stderr] warning: unused import: `std::mem`
Dec 17 20:35:02.578 INFO [stderr]  --> src/scanner.rs:6:5
Dec 17 20:35:02.579 INFO [stderr]   |
Dec 17 20:35:02.579 INFO [stderr] 6 | use std::mem;
Dec 17 20:35:02.579 INFO [stderr]   |     ^^^^^^^^
Dec 17 20:35:02.579 INFO [stderr] 
Dec 17 20:35:02.580 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 20:35:02.581 INFO [stderr]    --> src/scanner.rs:368:25
Dec 17 20:35:02.585 INFO [stderr]     |
Dec 17 20:35:02.585 INFO [stderr] 368 |                         /// Escape charactors
Dec 17 20:35:02.585 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:35:02.585 INFO [stderr]     |
Dec 17 20:35:02.585 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 20:35:02.585 INFO [stderr] 
Dec 17 20:35:02.592 INFO [stderr] warning: unused imports: `Read`, `Write`
Dec 17 20:35:02.592 INFO [stderr]    --> src/scanner.rs:643:19
Dec 17 20:35:02.592 INFO [stderr]     |
Dec 17 20:35:02.592 INFO [stderr] 643 |     use std::io::{Read, Write};
Dec 17 20:35:02.592 INFO [stderr]     |                   ^^^^  ^^^^^
Dec 17 20:35:02.592 INFO [stderr] 
Dec 17 20:35:02.952 INFO [stderr] warning: unused import: `state::State`
Dec 17 20:35:02.952 INFO [stderr]  --> src/scanner.rs:3:5
Dec 17 20:35:02.952 INFO [stderr]   |
Dec 17 20:35:02.952 INFO [stderr] 3 | use state::State;
Dec 17 20:35:02.952 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 17 20:35:02.952 INFO [stderr]   |
Dec 17 20:35:02.952 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:35:02.952 INFO [stderr] 
Dec 17 20:35:02.952 INFO [stderr] warning: unused import: `std::mem`
Dec 17 20:35:02.952 INFO [stderr]  --> src/scanner.rs:6:5
Dec 17 20:35:02.952 INFO [stderr]   |
Dec 17 20:35:02.952 INFO [stderr] 6 | use std::mem;
Dec 17 20:35:02.952 INFO [stderr]   |     ^^^^^^^^
Dec 17 20:35:02.952 INFO [stderr] 
Dec 17 20:35:02.952 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 20:35:02.952 INFO [stderr]    --> src/scanner.rs:368:25
Dec 17 20:35:02.952 INFO [stderr]     |
Dec 17 20:35:02.952 INFO [stderr] 368 |                         /// Escape charactors
Dec 17 20:35:02.952 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:35:02.952 INFO [stderr]     |
Dec 17 20:35:02.953 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 20:35:02.953 INFO [stderr] 
Dec 17 20:35:03.012 INFO [stderr] warning: unreachable expression
Dec 17 20:35:03.012 INFO [stderr]    --> src/scanner.rs:238:9
Dec 17 20:35:03.012 INFO [stderr]     |
Dec 17 20:35:03.012 INFO [stderr] 238 |         unreachable!()
Dec 17 20:35:03.012 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:35:03.012 INFO [stderr]     |
Dec 17 20:35:03.012 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 17 20:35:03.012 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 17 20:35:03.012 INFO [stderr] 
Dec 17 20:35:03.036 INFO [stderr] warning: unreachable expression
Dec 17 20:35:03.036 INFO [stderr]    --> src/scanner.rs:355:9
Dec 17 20:35:03.036 INFO [stderr]     |
Dec 17 20:35:03.036 INFO [stderr] 355 |         unreachable!()
Dec 17 20:35:03.036 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:35:03.036 INFO [stderr]     |
Dec 17 20:35:03.036 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 17 20:35:03.036 INFO [stderr] 
Dec 17 20:35:03.140 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
Dec 17 20:35:03.140 INFO [stderr]    --> src/scanner.rs:580:23
Dec 17 20:35:03.140 INFO [stderr]     |
Dec 17 20:35:03.140 INFO [stderr] 580 |             let r = s.trim_left_matches("0").to_string();
Dec 17 20:35:03.140 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^
Dec 17 20:35:03.140 INFO [stderr]     |
Dec 17 20:35:03.140 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 17 20:35:03.140 INFO [stderr] 
Dec 17 20:35:03.312 INFO [stderr] warning: unused import: `state::State`
Dec 17 20:35:03.312 INFO [stderr]  --> src/scanner.rs:3:5
Dec 17 20:35:03.312 INFO [stderr]   |
Dec 17 20:35:03.312 INFO [stderr] 3 | use state::State;
Dec 17 20:35:03.312 INFO [stderr]   |     ^^^^^^^^^^^^
Dec 17 20:35:03.312 INFO [stderr]   |
Dec 17 20:35:03.312 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:35:03.312 INFO [stderr] 
Dec 17 20:35:03.312 INFO [stderr] warning: unused import: `std::mem`
Dec 17 20:35:03.312 INFO [stderr]  --> src/scanner.rs:6:5
Dec 17 20:35:03.312 INFO [stderr]   |
Dec 17 20:35:03.312 INFO [stderr] 6 | use std::mem;
Dec 17 20:35:03.312 INFO [stderr]   |     ^^^^^^^^
Dec 17 20:35:03.312 INFO [stderr] 
Dec 17 20:35:03.312 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 20:35:03.312 INFO [stderr]    --> src/scanner.rs:368:25
Dec 17 20:35:03.312 INFO [stderr]     |
Dec 17 20:35:03.312 INFO [stderr] 368 |                         /// Escape charactors
Dec 17 20:35:03.313 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:35:03.313 INFO [stderr]     |
Dec 17 20:35:03.313 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 20:35:03.313 INFO [stderr] 
Dec 17 20:35:03.655 INFO [stderr] warning: unreachable expression
Dec 17 20:35:03.655 INFO [stderr]    --> src/scanner.rs:238:9
Dec 17 20:35:03.655 INFO [stderr]     |
Dec 17 20:35:03.655 INFO [stderr] 238 |         unreachable!()
Dec 17 20:35:03.655 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:35:03.655 INFO [stderr]     |
Dec 17 20:35:03.660 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 17 20:35:03.660 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 17 20:35:03.661 INFO [stderr] 
Dec 17 20:35:03.700 INFO [stderr] warning: unreachable expression
Dec 17 20:35:03.701 INFO [stderr]    --> src/scanner.rs:355:9
Dec 17 20:35:03.701 INFO [stderr]     |
Dec 17 20:35:03.701 INFO [stderr] 355 |         unreachable!()
Dec 17 20:35:03.702 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:35:03.702 INFO [stderr]     |
Dec 17 20:35:03.702 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 17 20:35:03.702 INFO [stderr] 
Dec 17 20:35:03.812 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
Dec 17 20:35:03.813 INFO [stderr]    --> src/scanner.rs:580:23
Dec 17 20:35:03.813 INFO [stderr]     |
Dec 17 20:35:03.813 INFO [stderr] 580 |             let r = s.trim_left_matches("0").to_string();
Dec 17 20:35:03.814 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^
Dec 17 20:35:03.814 INFO [stderr]     |
Dec 17 20:35:03.814 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 17 20:35:03.814 INFO [stderr] 
Dec 17 20:35:03.847 INFO [stderr] warning: unreachable expression
Dec 17 20:35:03.847 INFO [stderr]    --> src/scanner.rs:238:9
Dec 17 20:35:03.847 INFO [stderr]     |
Dec 17 20:35:03.848 INFO [stderr] 238 |         unreachable!()
Dec 17 20:35:03.848 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:35:03.848 INFO [stderr]     |
Dec 17 20:35:03.848 INFO [stderr]     = note: #[warn(unreachable_code)] on by default
Dec 17 20:35:03.849 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 17 20:35:03.849 INFO [stderr] 
Dec 17 20:35:03.896 INFO [stderr] warning: unreachable expression
Dec 17 20:35:03.897 INFO [stderr]    --> src/scanner.rs:355:9
Dec 17 20:35:03.897 INFO [stderr]     |
Dec 17 20:35:03.897 INFO [stderr] 355 |         unreachable!()
Dec 17 20:35:03.898 INFO [stderr]     |         ^^^^^^^^^^^^^^
Dec 17 20:35:03.898 INFO [stderr]     |
Dec 17 20:35:03.898 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 17 20:35:03.898 INFO [stderr] 
Dec 17 20:35:04.020 INFO [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
Dec 17 20:35:04.021 INFO [stderr]    --> src/scanner.rs:580:23
Dec 17 20:35:04.021 INFO [stderr]     |
Dec 17 20:35:04.021 INFO [stderr] 580 |             let r = s.trim_left_matches("0").to_string();
Dec 17 20:35:04.022 INFO [stderr]     |                       ^^^^^^^^^^^^^^^^^
Dec 17 20:35:04.022 INFO [stderr]     |
Dec 17 20:35:04.022 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 17 20:35:04.022 INFO [stderr] 
Dec 17 20:35:04.280 INFO [stderr] warning: unused variable: `res`
Dec 17 20:35:04.280 INFO [stderr]    --> src/scanner.rs:732:13
Dec 17 20:35:04.280 INFO [stderr]     |
Dec 17 20:35:04.280 INFO [stderr] 732 |         let res = scanner.scan();
Dec 17 20:35:04.280 INFO [stderr]     |             ^^^ help: consider using `_res` instead
Dec 17 20:35:04.281 INFO [stderr]     |
Dec 17 20:35:04.281 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 20:35:04.281 INFO [stderr] 
Dec 17 20:35:04.283 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:04.283 INFO [stderr]    --> src/compiler.rs:933:21
Dec 17 20:35:04.283 INFO [stderr]     |
Dec 17 20:35:04.283 INFO [stderr] 933 |                     reg += self.compile_expr(reg, expr, expr_ctx);
Dec 17 20:35:04.283 INFO [stderr]     |                     ^^^
Dec 17 20:35:04.283 INFO [stderr]     |
Dec 17 20:35:04.283 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 17 20:35:04.283 INFO [stderr] 
Dec 17 20:35:04.283 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:04.283 INFO [stderr]    --> src/compiler.rs:937:21
Dec 17 20:35:04.283 INFO [stderr]     |
Dec 17 20:35:04.283 INFO [stderr] 937 |                     reg += self.compile_expr(reg, expr, &ExprContext::with_opt(0));
Dec 17 20:35:04.283 INFO [stderr]     |                     ^^^
Dec 17 20:35:04.283 INFO [stderr] 
Dec 17 20:35:04.283 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:04.283 INFO [stderr]     --> src/compiler.rs:1020:17
Dec 17 20:35:04.283 INFO [stderr]      |
Dec 17 20:35:04.283 INFO [stderr] 1020 |                 reg += self.compile_expr(reg, rhs, &ExprContext::with_opt(0));
Dec 17 20:35:04.283 INFO [stderr]      |                 ^^^
Dec 17 20:35:04.283 INFO [stderr] 
Dec 17 20:35:04.284 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:04.284 INFO [stderr]     --> src/compiler.rs:1676:21
Dec 17 20:35:04.284 INFO [stderr]      |
Dec 17 20:35:04.284 INFO [stderr] 1676 |                     reg += self.compile_expr(reg, &exprs[0], &ExprContext::with_opt(-2));
Dec 17 20:35:04.284 INFO [stderr]      |                     ^^^
Dec 17 20:35:04.284 INFO [stderr] 
Dec 17 20:35:04.392 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:35:04.392 INFO [stderr]    --> src/scanner.rs:475:17
Dec 17 20:35:04.392 INFO [stderr]     |
Dec 17 20:35:04.392 INFO [stderr] 475 |             let mut cvalue = c as u32;
Dec 17 20:35:04.392 INFO [stderr]     |                 ----^^^^^^
Dec 17 20:35:04.392 INFO [stderr]     |                 |
Dec 17 20:35:04.392 INFO [stderr]     |                 help: remove this `mut`
Dec 17 20:35:04.392 INFO [stderr]     |
Dec 17 20:35:04.392 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 20:35:04.392 INFO [stderr] 
Dec 17 20:35:04.412 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:35:04.412 INFO [stderr]    --> src/scanner.rs:517:49
Dec 17 20:35:04.412 INFO [stderr]     |
Dec 17 20:35:04.412 INFO [stderr] 517 |             let (mut fraction, mut latest_char, mut count) = self.read_hexadecimal(0.0);
Dec 17 20:35:04.412 INFO [stderr]     |                                                 ----^^^^^
Dec 17 20:35:04.412 INFO [stderr]     |                                                 |
Dec 17 20:35:04.412 INFO [stderr]     |                                                 help: remove this `mut`
Dec 17 20:35:04.412 INFO [stderr] 
Dec 17 20:35:05.036 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:05.036 INFO [stderr]    --> src/compiler.rs:933:21
Dec 17 20:35:05.036 INFO [stderr]     |
Dec 17 20:35:05.036 INFO [stderr] 933 |                     reg += self.compile_expr(reg, expr, expr_ctx);
Dec 17 20:35:05.036 INFO [stderr]     |                     ^^^
Dec 17 20:35:05.036 INFO [stderr]     |
Dec 17 20:35:05.036 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 17 20:35:05.036 INFO [stderr] 
Dec 17 20:35:05.036 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:05.036 INFO [stderr]    --> src/compiler.rs:937:21
Dec 17 20:35:05.036 INFO [stderr]     |
Dec 17 20:35:05.036 INFO [stderr] 937 |                     reg += self.compile_expr(reg, expr, &ExprContext::with_opt(0));
Dec 17 20:35:05.036 INFO [stderr]     |                     ^^^
Dec 17 20:35:05.036 INFO [stderr] 
Dec 17 20:35:05.036 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:05.036 INFO [stderr]     --> src/compiler.rs:1020:17
Dec 17 20:35:05.036 INFO [stderr]      |
Dec 17 20:35:05.036 INFO [stderr] 1020 |                 reg += self.compile_expr(reg, rhs, &ExprContext::with_opt(0));
Dec 17 20:35:05.037 INFO [stderr]      |                 ^^^
Dec 17 20:35:05.037 INFO [stderr] 
Dec 17 20:35:05.037 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:05.037 INFO [stderr]     --> src/compiler.rs:1676:21
Dec 17 20:35:05.037 INFO [stderr]      |
Dec 17 20:35:05.037 INFO [stderr] 1676 |                     reg += self.compile_expr(reg, &exprs[0], &ExprContext::with_opt(-2));
Dec 17 20:35:05.037 INFO [stderr]      |                     ^^^
Dec 17 20:35:05.037 INFO [stderr] 
Dec 17 20:35:05.128 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:35:05.128 INFO [stderr]    --> src/scanner.rs:475:17
Dec 17 20:35:05.128 INFO [stderr]     |
Dec 17 20:35:05.128 INFO [stderr] 475 |             let mut cvalue = c as u32;
Dec 17 20:35:05.128 INFO [stderr]     |                 ----^^^^^^
Dec 17 20:35:05.128 INFO [stderr]     |                 |
Dec 17 20:35:05.128 INFO [stderr]     |                 help: remove this `mut`
Dec 17 20:35:05.128 INFO [stderr]     |
Dec 17 20:35:05.128 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 20:35:05.128 INFO [stderr] 
Dec 17 20:35:05.136 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:35:05.136 INFO [stderr]    --> src/scanner.rs:517:49
Dec 17 20:35:05.136 INFO [stderr]     |
Dec 17 20:35:05.136 INFO [stderr] 517 |             let (mut fraction, mut latest_char, mut count) = self.read_hexadecimal(0.0);
Dec 17 20:35:05.136 INFO [stderr]     |                                                 ----^^^^^
Dec 17 20:35:05.136 INFO [stderr]     |                                                 |
Dec 17 20:35:05.136 INFO [stderr]     |                                                 help: remove this `mut`
Dec 17 20:35:05.136 INFO [stderr] 
Dec 17 20:35:05.312 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:05.312 INFO [stderr]    --> src/compiler.rs:933:21
Dec 17 20:35:05.312 INFO [stderr]     |
Dec 17 20:35:05.312 INFO [stderr] 933 |                     reg += self.compile_expr(reg, expr, expr_ctx);
Dec 17 20:35:05.312 INFO [stderr]     |                     ^^^
Dec 17 20:35:05.312 INFO [stderr]     |
Dec 17 20:35:05.312 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 17 20:35:05.312 INFO [stderr] 
Dec 17 20:35:05.312 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:05.312 INFO [stderr]    --> src/compiler.rs:937:21
Dec 17 20:35:05.312 INFO [stderr]     |
Dec 17 20:35:05.312 INFO [stderr] 937 |                     reg += self.compile_expr(reg, expr, &ExprContext::with_opt(0));
Dec 17 20:35:05.312 INFO [stderr]     |                     ^^^
Dec 17 20:35:05.312 INFO [stderr] 
Dec 17 20:35:05.312 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:05.312 INFO [stderr]     --> src/compiler.rs:1020:17
Dec 17 20:35:05.312 INFO [stderr]      |
Dec 17 20:35:05.312 INFO [stderr] 1020 |                 reg += self.compile_expr(reg, rhs, &ExprContext::with_opt(0));
Dec 17 20:35:05.313 INFO [stderr]      |                 ^^^
Dec 17 20:35:05.313 INFO [stderr] 
Dec 17 20:35:05.313 INFO [stderr] warning: value assigned to `reg` is never read
Dec 17 20:35:05.313 INFO [stderr]     --> src/compiler.rs:1676:21
Dec 17 20:35:05.313 INFO [stderr]      |
Dec 17 20:35:05.313 INFO [stderr] 1676 |                     reg += self.compile_expr(reg, &exprs[0], &ExprContext::with_opt(-2));
Dec 17 20:35:05.313 INFO [stderr]      |                     ^^^
Dec 17 20:35:05.313 INFO [stderr] 
Dec 17 20:35:05.436 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:35:05.436 INFO [stderr]    --> src/scanner.rs:475:17
Dec 17 20:35:05.436 INFO [stderr]     |
Dec 17 20:35:05.436 INFO [stderr] 475 |             let mut cvalue = c as u32;
Dec 17 20:35:05.436 INFO [stderr]     |                 ----^^^^^^
Dec 17 20:35:05.436 INFO [stderr]     |                 |
Dec 17 20:35:05.436 INFO [stderr]     |                 help: remove this `mut`
Dec 17 20:35:05.436 INFO [stderr]     |
Dec 17 20:35:05.436 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 20:35:05.436 INFO [stderr] 
Dec 17 20:35:05.460 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:35:05.460 INFO [stderr]    --> src/scanner.rs:517:49
Dec 17 20:35:05.460 INFO [stderr]     |
Dec 17 20:35:05.460 INFO [stderr] 517 |             let (mut fraction, mut latest_char, mut count) = self.read_hexadecimal(0.0);
Dec 17 20:35:05.460 INFO [stderr]     |                                                 ----^^^^^
Dec 17 20:35:05.460 INFO [stderr]     |                                                 |
Dec 17 20:35:05.460 INFO [stderr]     |                                                 help: remove this `mut`
Dec 17 20:35:05.460 INFO [stderr] 
Dec 17 20:35:06.809 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.14s
Dec 17 20:35:08.183 INFO running `"docker" "inspect" "db0338086d0f4e9d803802af8a154841015babf4b241038642b4fd268335efd2"`
Dec 17 20:35:08.544 INFO running `"docker" "rm" "-f" "db0338086d0f4e9d803802af8a154841015babf4b241038642b4fd268335efd2"`
Dec 17 20:35:08.816 INFO [stdout] db0338086d0f4e9d803802af8a154841015babf4b241038642b4fd268335efd2