Oct 13 02:30:12.422 INFO checking StephenAshmore/synth against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 02:30:12.423 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +4021bd0b3c5815b087d6db10ce461e7e4854ade7-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 13 02:30:12.988 INFO blam! d9f084aa7691d7d223532c70b5de9c9b062220874f1b96ceea0dd4ec81fc400d
Oct 13 02:30:13.000 INFO running `"docker" "start" "-a" "d9f084aa7691d7d223532c70b5de9c9b062220874f1b96ceea0dd4ec81fc400d"`
Oct 13 02:30:14.628 INFO kablam! usermod: no changes
Oct 13 02:30:14.664 INFO kablam!     Checking terminal_size v0.1.7
Oct 13 02:30:15.366 INFO kablam!     Checking synth v0.1.0 (/source)
Oct 13 02:30:16.201 INFO kablam! warning: unused imports: `Receiver`, `Sender`
Oct 13 02:30:16.201 INFO kablam!  --> src/main.rs:3:23
Oct 13 02:30:16.201 INFO kablam!   |
Oct 13 02:30:16.201 INFO kablam! 3 | use std::sync::mpsc::{Sender, Receiver};
Oct 13 02:30:16.201 INFO kablam!   |                       ^^^^^^  ^^^^^^^^
Oct 13 02:30:16.201 INFO kablam!   |
Oct 13 02:30:16.201 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 02:30:16.201 INFO kablam! 
Oct 13 02:30:16.201 INFO kablam! warning: unused import: `std::sync::mpsc`
Oct 13 02:30:16.201 INFO kablam!  --> src/cli/interface.rs:3:5
Oct 13 02:30:16.201 INFO kablam!   |
Oct 13 02:30:16.201 INFO kablam! 3 | use std::sync::mpsc;
Oct 13 02:30:16.201 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 13 02:30:16.201 INFO kablam! 
Oct 13 02:30:16.201 INFO kablam! warning: unused import: `BufRead`
Oct 13 02:30:16.201 INFO kablam!  --> src/cli/display.rs:1:28
Oct 13 02:30:16.201 INFO kablam!   |
Oct 13 02:30:16.201 INFO kablam! 1 | use std::io::{self, Write, BufRead};
Oct 13 02:30:16.201 INFO kablam!   |                            ^^^^^^^
Oct 13 02:30:16.201 INFO kablam! 
Oct 13 02:30:16.272 INFO kablam! warning: unused variable: `error`
Oct 13 02:30:16.272 INFO kablam!   --> src/cli/display.rs:41:21
Oct 13 02:30:16.272 INFO kablam!    |
Oct 13 02:30:16.272 INFO kablam! 41 |                 Err(error) => String::from(""),
Oct 13 02:30:16.272 INFO kablam!    |                     ^^^^^ help: consider using `_error` instead
Oct 13 02:30:16.272 INFO kablam!    |
Oct 13 02:30:16.272 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 02:30:16.272 INFO kablam! 
Oct 13 02:30:16.272 INFO kablam! warning: unused variable: `buffer_pointer`
Oct 13 02:30:16.272 INFO kablam!   --> src/cli/display.rs:57:17
Oct 13 02:30:16.272 INFO kablam!    |
Oct 13 02:30:16.272 INFO kablam! 57 |         let mut buffer_pointer = 0;
Oct 13 02:30:16.272 INFO kablam!    |                 ^^^^^^^^^^^^^^ help: consider using `_buffer_pointer` instead
Oct 13 02:30:16.272 INFO kablam! 
Oct 13 02:30:16.284 INFO kablam! warning: variable does not need to be mutable
Oct 13 02:30:16.284 INFO kablam!   --> src/main.rs:12:9
Oct 13 02:30:16.284 INFO kablam!    |
Oct 13 02:30:16.284 INFO kablam! 12 |     let mut user_finished = false;
Oct 13 02:30:16.284 INFO kablam!    |         ----^^^^^^^^^^^^^
Oct 13 02:30:16.284 INFO kablam!    |         |
Oct 13 02:30:16.284 INFO kablam!    |         help: remove this `mut`
Oct 13 02:30:16.284 INFO kablam!    |
Oct 13 02:30:16.284 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 02:30:16.284 INFO kablam! 
Oct 13 02:30:16.296 INFO kablam! warning: variable does not need to be mutable
Oct 13 02:30:16.296 INFO kablam!   --> src/cli/display.rs:57:13
Oct 13 02:30:16.296 INFO kablam!    |
Oct 13 02:30:16.296 INFO kablam! 57 |         let mut buffer_pointer = 0;
Oct 13 02:30:16.296 INFO kablam!    |             ----^^^^^^^^^^^^^^
Oct 13 02:30:16.296 INFO kablam!    |             |
Oct 13 02:30:16.296 INFO kablam!    |             help: remove this `mut`
Oct 13 02:30:16.296 INFO kablam! 
Oct 13 02:30:16.296 INFO kablam! warning: field is never used: `m_sender`
Oct 13 02:30:16.296 INFO kablam!  --> src/cli/interface.rs:7:5
Oct 13 02:30:16.296 INFO kablam!   |
Oct 13 02:30:16.296 INFO kablam! 7 |     m_sender: Sender<String>,
Oct 13 02:30:16.296 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 02:30:16.296 INFO kablam!   |
Oct 13 02:30:16.296 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 13 02:30:16.296 INFO kablam! 
Oct 13 02:30:16.320 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 02:30:16.320 INFO kablam!   --> src/cli/display.rs:93:9
Oct 13 02:30:16.320 INFO kablam!    |
Oct 13 02:30:16.320 INFO kablam! 93 |         io::stdout().flush();
Oct 13 02:30:16.320 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^
Oct 13 02:30:16.320 INFO kablam!    |
Oct 13 02:30:16.320 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 13 02:30:16.320 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 02:30:16.320 INFO kablam! 
Oct 13 02:30:16.330 INFO kablam! warning: unused imports: `Receiver`, `Sender`
Oct 13 02:30:16.330 INFO kablam!  --> src/main.rs:3:23
Oct 13 02:30:16.330 INFO kablam!   |
Oct 13 02:30:16.330 INFO kablam! 3 | use std::sync::mpsc::{Sender, Receiver};
Oct 13 02:30:16.330 INFO kablam!   |                       ^^^^^^  ^^^^^^^^
Oct 13 02:30:16.330 INFO kablam!   |
Oct 13 02:30:16.330 INFO kablam!   = note: #[warn(unused_imports)] on by default
Oct 13 02:30:16.330 INFO kablam! 
Oct 13 02:30:16.330 INFO kablam! warning: unused import: `std::sync::mpsc`
Oct 13 02:30:16.330 INFO kablam!  --> src/cli/interface.rs:3:5
Oct 13 02:30:16.330 INFO kablam!   |
Oct 13 02:30:16.330 INFO kablam! 3 | use std::sync::mpsc;
Oct 13 02:30:16.330 INFO kablam!   |     ^^^^^^^^^^^^^^^
Oct 13 02:30:16.330 INFO kablam! 
Oct 13 02:30:16.330 INFO kablam! warning: unused import: `BufRead`
Oct 13 02:30:16.330 INFO kablam!  --> src/cli/display.rs:1:28
Oct 13 02:30:16.330 INFO kablam!   |
Oct 13 02:30:16.330 INFO kablam! 1 | use std::io::{self, Write, BufRead};
Oct 13 02:30:16.330 INFO kablam!   |                            ^^^^^^^
Oct 13 02:30:16.330 INFO kablam! 
Oct 13 02:30:16.380 INFO kablam! warning: unused variable: `error`
Oct 13 02:30:16.380 INFO kablam!   --> src/cli/display.rs:41:21
Oct 13 02:30:16.380 INFO kablam!    |
Oct 13 02:30:16.380 INFO kablam! 41 |                 Err(error) => String::from(""),
Oct 13 02:30:16.380 INFO kablam!    |                     ^^^^^ help: consider using `_error` instead
Oct 13 02:30:16.380 INFO kablam!    |
Oct 13 02:30:16.380 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 13 02:30:16.380 INFO kablam! 
Oct 13 02:30:16.380 INFO kablam! warning: unused variable: `buffer_pointer`
Oct 13 02:30:16.380 INFO kablam!   --> src/cli/display.rs:57:17
Oct 13 02:30:16.380 INFO kablam!    |
Oct 13 02:30:16.380 INFO kablam! 57 |         let mut buffer_pointer = 0;
Oct 13 02:30:16.380 INFO kablam!    |                 ^^^^^^^^^^^^^^ help: consider using `_buffer_pointer` instead
Oct 13 02:30:16.380 INFO kablam! 
Oct 13 02:30:16.384 INFO kablam! warning: variable does not need to be mutable
Oct 13 02:30:16.384 INFO kablam!   --> src/main.rs:12:9
Oct 13 02:30:16.384 INFO kablam!    |
Oct 13 02:30:16.384 INFO kablam! 12 |     let mut user_finished = false;
Oct 13 02:30:16.384 INFO kablam!    |         ----^^^^^^^^^^^^^
Oct 13 02:30:16.384 INFO kablam!    |         |
Oct 13 02:30:16.384 INFO kablam!    |         help: remove this `mut`
Oct 13 02:30:16.384 INFO kablam!    |
Oct 13 02:30:16.384 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 02:30:16.384 INFO kablam! 
Oct 13 02:30:16.395 INFO kablam! warning: variable does not need to be mutable
Oct 13 02:30:16.395 INFO kablam!   --> src/cli/display.rs:57:13
Oct 13 02:30:16.395 INFO kablam!    |
Oct 13 02:30:16.395 INFO kablam! 57 |         let mut buffer_pointer = 0;
Oct 13 02:30:16.395 INFO kablam!    |             ----^^^^^^^^^^^^^^
Oct 13 02:30:16.395 INFO kablam!    |             |
Oct 13 02:30:16.395 INFO kablam!    |             help: remove this `mut`
Oct 13 02:30:16.395 INFO kablam! 
Oct 13 02:30:16.400 INFO kablam! warning: field is never used: `m_sender`
Oct 13 02:30:16.400 INFO kablam!  --> src/cli/interface.rs:7:5
Oct 13 02:30:16.400 INFO kablam!   |
Oct 13 02:30:16.400 INFO kablam! 7 |     m_sender: Sender<String>,
Oct 13 02:30:16.400 INFO kablam!   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Oct 13 02:30:16.400 INFO kablam!   |
Oct 13 02:30:16.400 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 13 02:30:16.400 INFO kablam! 
Oct 13 02:30:16.408 INFO kablam! warning: unused `std::result::Result` which must be used
Oct 13 02:30:16.408 INFO kablam!   --> src/cli/display.rs:93:9
Oct 13 02:30:16.408 INFO kablam!    |
Oct 13 02:30:16.408 INFO kablam! 93 |         io::stdout().flush();
Oct 13 02:30:16.408 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^
Oct 13 02:30:16.408 INFO kablam!    |
Oct 13 02:30:16.408 INFO kablam!    = note: #[warn(unused_must_use)] on by default
Oct 13 02:30:16.408 INFO kablam!    = note: this `Result` may be an `Err` variant, which should be handled
Oct 13 02:30:16.408 INFO kablam! 
Oct 13 02:30:16.436 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
Oct 13 02:30:16.448 INFO kablam! su: No module specific data is present
Oct 13 02:30:17.128 INFO running `"docker" "rm" "-f" "d9f084aa7691d7d223532c70b5de9c9b062220874f1b96ceea0dd4ec81fc400d"`
Oct 13 02:30:17.414 INFO blam! d9f084aa7691d7d223532c70b5de9c9b062220874f1b96ceea0dd4ec81fc400d