Dec 18 04:56:43.868 INFO checking VoxWave/Compilers2018 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 04:56:43.868 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/VoxWave/Compilers2018:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 04:56:44.118 INFO [stdout] 68277bd24b0d5fa96427407c3ab1df8070e3864ce540f7549cef1b5688c52dbb
Dec 18 04:56:44.120 INFO running `"docker" "start" "-a" "68277bd24b0d5fa96427407c3ab1df8070e3864ce540f7549cef1b5688c52dbb"`
Dec 18 04:56:45.280 INFO [stderr]     Checking char_stream v0.1.8
Dec 18 04:56:45.292 INFO [stderr]     Checking rayon-core v1.4.0
Dec 18 04:56:46.212 INFO [stderr]     Checking rayon v1.0.1
Dec 18 04:56:49.524 INFO [stderr]     Checking minipl-compiler v0.1.0 (/opt/crater/workdir)
Dec 18 04:56:50.060 INFO [stderr] warning: unused import: `std::sync::mpsc::Sender`
Dec 18 04:56:50.060 INFO [stderr]  --> src/main.rs:7:5
Dec 18 04:56:50.060 INFO [stderr]   |
Dec 18 04:56:50.060 INFO [stderr] 7 | use std::sync::mpsc::Sender;
Dec 18 04:56:50.060 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.060 INFO [stderr]   |
Dec 18 04:56:50.060 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 04:56:50.060 INFO [stderr] 
Dec 18 04:56:50.060 INFO [stderr] warning: unused import: `std::sync::mpsc::Receiver`
Dec 18 04:56:50.060 INFO [stderr]  --> src/main.rs:8:5
Dec 18 04:56:50.060 INFO [stderr]   |
Dec 18 04:56:50.060 INFO [stderr] 8 | use std::sync::mpsc::Receiver;
Dec 18 04:56:50.060 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.061 INFO [stderr] 
Dec 18 04:56:50.061 INFO [stderr] warning: unused import: `std::process::abort`
Dec 18 04:56:50.061 INFO [stderr]   --> src/main.rs:10:5
Dec 18 04:56:50.061 INFO [stderr]    |
Dec 18 04:56:50.061 INFO [stderr] 10 | use std::process::abort;
Dec 18 04:56:50.061 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.061 INFO [stderr] 
Dec 18 04:56:50.240 INFO [stderr] warning: unused import: `std::sync::mpsc::Sender`
Dec 18 04:56:50.240 INFO [stderr]  --> src/main.rs:7:5
Dec 18 04:56:50.240 INFO [stderr]   |
Dec 18 04:56:50.240 INFO [stderr] 7 | use std::sync::mpsc::Sender;
Dec 18 04:56:50.240 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.248 INFO [stderr]   |
Dec 18 04:56:50.248 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 04:56:50.248 INFO [stderr] 
Dec 18 04:56:50.248 INFO [stderr] warning: unused import: `std::sync::mpsc::Receiver`
Dec 18 04:56:50.248 INFO [stderr]  --> src/main.rs:8:5
Dec 18 04:56:50.248 INFO [stderr]   |
Dec 18 04:56:50.248 INFO [stderr] 8 | use std::sync::mpsc::Receiver;
Dec 18 04:56:50.248 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.248 INFO [stderr] 
Dec 18 04:56:50.248 INFO [stderr] warning: unused import: `std::process::abort`
Dec 18 04:56:50.248 INFO [stderr]   --> src/main.rs:10:5
Dec 18 04:56:50.248 INFO [stderr]    |
Dec 18 04:56:50.248 INFO [stderr] 10 | use std::process::abort;
Dec 18 04:56:50.248 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.248 INFO [stderr] 
Dec 18 04:56:50.540 INFO [stderr] warning: unreachable pattern
Dec 18 04:56:50.540 INFO [stderr]    --> src/parser/mod.rs:255:17
Dec 18 04:56:50.540 INFO [stderr]     |
Dec 18 04:56:50.540 INFO [stderr] 255 |                 _ => panic!("unexpected Token {:#?} read during", t),
Dec 18 04:56:50.540 INFO [stderr]     |                 ^
Dec 18 04:56:50.540 INFO [stderr]     |
Dec 18 04:56:50.540 INFO [stderr]     = note: #[warn(unreachable_patterns)] on by default
Dec 18 04:56:50.540 INFO [stderr] 
Dec 18 04:56:50.552 INFO [stderr] warning: unused variable: `b`
Dec 18 04:56:50.552 INFO [stderr]    --> src/interpreter.rs:207:33
Dec 18 04:56:50.552 INFO [stderr]     |
Dec 18 04:56:50.552 INFO [stderr] 207 |                     Value::Bool(b) => panic!("boolean printing is not supported"),
Dec 18 04:56:50.552 INFO [stderr]     |                                 ^ help: consider using `_b` instead
Dec 18 04:56:50.552 INFO [stderr]     |
Dec 18 04:56:50.552 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 04:56:50.552 INFO [stderr] 
Dec 18 04:56:50.552 INFO [stderr] warning: variable does not need to be mutable
Dec 18 04:56:50.552 INFO [stderr]   --> src/main.rs:29:10
Dec 18 04:56:50.552 INFO [stderr]    |
Dec 18 04:56:50.552 INFO [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
Dec 18 04:56:50.552 INFO [stderr]    |          ----^^^^^^^^^^^
Dec 18 04:56:50.552 INFO [stderr]    |          |
Dec 18 04:56:50.552 INFO [stderr]    |          help: remove this `mut`
Dec 18 04:56:50.552 INFO [stderr]    |
Dec 18 04:56:50.552 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 04:56:50.552 INFO [stderr] 
Dec 18 04:56:50.552 INFO [stderr] warning: variable does not need to be mutable
Dec 18 04:56:50.552 INFO [stderr]   --> src/main.rs:29:27
Dec 18 04:56:50.552 INFO [stderr]    |
Dec 18 04:56:50.552 INFO [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
Dec 18 04:56:50.552 INFO [stderr]    |                           ----^^^^^^^^^^^
Dec 18 04:56:50.552 INFO [stderr]    |                           |
Dec 18 04:56:50.552 INFO [stderr]    |                           help: remove this `mut`
Dec 18 04:56:50.552 INFO [stderr] 
Dec 18 04:56:50.691 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:50.691 INFO [stderr]   --> src/main.rs:41:9
Dec 18 04:56:50.691 INFO [stderr]    |
Dec 18 04:56:50.691 INFO [stderr] 41 |         kill_switch.send(true);
Dec 18 04:56:50.691 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.691 INFO [stderr]    |
Dec 18 04:56:50.691 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:56:50.691 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:50.691 INFO [stderr] 
Dec 18 04:56:50.691 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:50.691 INFO [stderr]   --> src/main.rs:43:5
Dec 18 04:56:50.691 INFO [stderr]    |
Dec 18 04:56:50.691 INFO [stderr] 43 |     kill_signal.recv();
Dec 18 04:56:50.691 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.691 INFO [stderr]    |
Dec 18 04:56:50.691 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:50.691 INFO [stderr] 
Dec 18 04:56:50.691 INFO [stderr] warning: unreachable pattern
Dec 18 04:56:50.691 INFO [stderr]    --> src/parser/mod.rs:255:17
Dec 18 04:56:50.691 INFO [stderr]     |
Dec 18 04:56:50.691 INFO [stderr] 255 |                 _ => panic!("unexpected Token {:#?} read during", t),
Dec 18 04:56:50.691 INFO [stderr]     |                 ^
Dec 18 04:56:50.691 INFO [stderr]     |
Dec 18 04:56:50.691 INFO [stderr]     = note: #[warn(unreachable_patterns)] on by default
Dec 18 04:56:50.691 INFO [stderr] 
Dec 18 04:56:50.697 INFO [stderr] warning: unused variable: `b`
Dec 18 04:56:50.697 INFO [stderr]    --> src/interpreter.rs:207:33
Dec 18 04:56:50.697 INFO [stderr]     |
Dec 18 04:56:50.697 INFO [stderr] 207 |                     Value::Bool(b) => panic!("boolean printing is not supported"),
Dec 18 04:56:50.698 INFO [stderr]     |                                 ^ help: consider using `_b` instead
Dec 18 04:56:50.698 INFO [stderr]     |
Dec 18 04:56:50.698 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 04:56:50.698 INFO [stderr] 
Dec 18 04:56:50.703 INFO [stderr] warning: variable does not need to be mutable
Dec 18 04:56:50.703 INFO [stderr]   --> src/main.rs:29:27
Dec 18 04:56:50.703 INFO [stderr]    |
Dec 18 04:56:50.703 INFO [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
Dec 18 04:56:50.703 INFO [stderr]    |                           ----^^^^^^^^^^^
Dec 18 04:56:50.703 INFO [stderr]    |                           |
Dec 18 04:56:50.703 INFO [stderr]    |                           help: remove this `mut`
Dec 18 04:56:50.703 INFO [stderr]    |
Dec 18 04:56:50.703 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 04:56:50.703 INFO [stderr] 
Dec 18 04:56:50.703 INFO [stderr] warning: variable does not need to be mutable
Dec 18 04:56:50.704 INFO [stderr]   --> src/main.rs:29:10
Dec 18 04:56:50.704 INFO [stderr]    |
Dec 18 04:56:50.704 INFO [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
Dec 18 04:56:50.704 INFO [stderr]    |          ----^^^^^^^^^^^
Dec 18 04:56:50.704 INFO [stderr]    |          |
Dec 18 04:56:50.704 INFO [stderr]    |          help: remove this `mut`
Dec 18 04:56:50.704 INFO [stderr] 
Dec 18 04:56:50.812 INFO [stderr] warning: variable does not need to be mutable
Dec 18 04:56:50.812 INFO [stderr]   --> src/parser/test.rs:20:9
Dec 18 04:56:50.812 INFO [stderr]    |
Dec 18 04:56:50.812 INFO [stderr] 20 |     let mut expected: VecDeque<_> = vec![
Dec 18 04:56:50.812 INFO [stderr]    |         ----^^^^^^^^
Dec 18 04:56:50.812 INFO [stderr]    |         |
Dec 18 04:56:50.812 INFO [stderr]    |         help: remove this `mut`
Dec 18 04:56:50.812 INFO [stderr] 
Dec 18 04:56:50.844 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:50.844 INFO [stderr]   --> src/main.rs:41:9
Dec 18 04:56:50.844 INFO [stderr]    |
Dec 18 04:56:50.844 INFO [stderr] 41 |         kill_switch.send(true);
Dec 18 04:56:50.844 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.844 INFO [stderr]    |
Dec 18 04:56:50.844 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 04:56:50.844 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:50.844 INFO [stderr] 
Dec 18 04:56:50.844 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 04:56:50.844 INFO [stderr]   --> src/main.rs:43:5
Dec 18 04:56:50.844 INFO [stderr]    |
Dec 18 04:56:50.844 INFO [stderr] 43 |     kill_signal.recv();
Dec 18 04:56:50.844 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 04:56:50.844 INFO [stderr]    |
Dec 18 04:56:50.844 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 04:56:50.844 INFO [stderr] 
Dec 18 04:56:50.872 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.70s
Dec 18 04:56:51.398 INFO running `"docker" "inspect" "68277bd24b0d5fa96427407c3ab1df8070e3864ce540f7549cef1b5688c52dbb"`
Dec 18 04:56:51.649 INFO running `"docker" "rm" "-f" "68277bd24b0d5fa96427407c3ab1df8070e3864ce540f7549cef1b5688c52dbb"`
Dec 18 04:56:51.901 INFO [stdout] 68277bd24b0d5fa96427407c3ab1df8070e3864ce540f7549cef1b5688c52dbb