Dec 05 00:00:47.092 INFO checking StephenAshmore/synth against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 00:00:47.092 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-6/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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"`
Dec 05 00:00:47.290 INFO [stdout] 292b49d5cc74a750d7a1612ba0855e3c287b5a271ae333a5e42890d53c5e42f3
Dec 05 00:00:47.292 INFO running `"docker" "start" "-a" "292b49d5cc74a750d7a1612ba0855e3c287b5a271ae333a5e42890d53c5e42f3"`
Dec 05 00:00:47.919 INFO [stderr] usermod: no changes
Dec 05 00:00:47.999 INFO [stderr]     Checking terminal_size v0.1.7
Dec 05 00:00:48.383 INFO [stderr]     Checking synth v0.1.0 (/source)
Dec 05 00:00:48.739 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 05 00:00:48.739 INFO [stderr]  --> src/main.rs:3:23
Dec 05 00:00:48.739 INFO [stderr]   |
Dec 05 00:00:48.739 INFO [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
Dec 05 00:00:48.739 INFO [stderr]   |                       ^^^^^^  ^^^^^^^^
Dec 05 00:00:48.739 INFO [stderr]   |
Dec 05 00:00:48.739 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 00:00:48.739 INFO [stderr] 
Dec 05 00:00:48.739 INFO [stderr] warning: unused import: `std::sync::mpsc`
Dec 05 00:00:48.739 INFO [stderr]  --> src/cli/interface.rs:3:5
Dec 05 00:00:48.739 INFO [stderr]   |
Dec 05 00:00:48.739 INFO [stderr] 3 | use std::sync::mpsc;
Dec 05 00:00:48.739 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 05 00:00:48.739 INFO [stderr] 
Dec 05 00:00:48.739 INFO [stderr] warning: unused import: `BufRead`
Dec 05 00:00:48.739 INFO [stderr]  --> src/cli/display.rs:1:28
Dec 05 00:00:48.739 INFO [stderr]   |
Dec 05 00:00:48.739 INFO [stderr] 1 | use std::io::{self, Write, BufRead};
Dec 05 00:00:48.739 INFO [stderr]   |                            ^^^^^^^
Dec 05 00:00:48.739 INFO [stderr] 
Dec 05 00:00:48.785 INFO [stderr] warning: unused variable: `error`
Dec 05 00:00:48.787 INFO [stderr]   --> src/cli/display.rs:41:21
Dec 05 00:00:48.787 INFO [stderr]    |
Dec 05 00:00:48.787 INFO [stderr] 41 |                 Err(error) => String::from(""),
Dec 05 00:00:48.787 INFO [stderr]    |                     ^^^^^ help: consider using `_error` instead
Dec 05 00:00:48.787 INFO [stderr]    |
Dec 05 00:00:48.787 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 00:00:48.787 INFO [stderr] 
Dec 05 00:00:48.787 INFO [stderr] warning: unused variable: `buffer_pointer`
Dec 05 00:00:48.787 INFO [stderr]   --> src/cli/display.rs:57:17
Dec 05 00:00:48.787 INFO [stderr]    |
Dec 05 00:00:48.787 INFO [stderr] 57 |         let mut buffer_pointer = 0;
Dec 05 00:00:48.787 INFO [stderr]    |                 ^^^^^^^^^^^^^^ help: consider using `_buffer_pointer` instead
Dec 05 00:00:48.787 INFO [stderr] 
Dec 05 00:00:48.795 INFO [stderr] warning: variable does not need to be mutable
Dec 05 00:00:48.795 INFO [stderr]   --> src/main.rs:12:9
Dec 05 00:00:48.795 INFO [stderr]    |
Dec 05 00:00:48.795 INFO [stderr] 12 |     let mut user_finished = false;
Dec 05 00:00:48.795 INFO [stderr]    |         ----^^^^^^^^^^^^^
Dec 05 00:00:48.795 INFO [stderr]    |         |
Dec 05 00:00:48.795 INFO [stderr]    |         help: remove this `mut`
Dec 05 00:00:48.795 INFO [stderr]    |
Dec 05 00:00:48.795 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 00:00:48.795 INFO [stderr] 
Dec 05 00:00:48.804 INFO [stderr] warning: variable does not need to be mutable
Dec 05 00:00:48.804 INFO [stderr]   --> src/cli/display.rs:57:13
Dec 05 00:00:48.804 INFO [stderr]    |
Dec 05 00:00:48.804 INFO [stderr] 57 |         let mut buffer_pointer = 0;
Dec 05 00:00:48.805 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Dec 05 00:00:48.805 INFO [stderr]    |             |
Dec 05 00:00:48.805 INFO [stderr]    |             help: remove this `mut`
Dec 05 00:00:48.805 INFO [stderr] 
Dec 05 00:00:48.811 INFO [stderr] warning: field is never used: `m_sender`
Dec 05 00:00:48.811 INFO [stderr]  --> src/cli/interface.rs:7:5
Dec 05 00:00:48.811 INFO [stderr]   |
Dec 05 00:00:48.811 INFO [stderr] 7 |     m_sender: Sender<String>,
Dec 05 00:00:48.811 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:00:48.811 INFO [stderr]   |
Dec 05 00:00:48.811 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 00:00:48.811 INFO [stderr] 
Dec 05 00:00:48.815 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:00:48.815 INFO [stderr]   --> src/cli/display.rs:93:9
Dec 05 00:00:48.815 INFO [stderr]    |
Dec 05 00:00:48.815 INFO [stderr] 93 |         io::stdout().flush();
Dec 05 00:00:48.815 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:00:48.815 INFO [stderr]    |
Dec 05 00:00:48.815 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 00:00:48.815 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:00:48.815 INFO [stderr] 
Dec 05 00:00:49.051 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 05 00:00:49.051 INFO [stderr]  --> src/main.rs:3:23
Dec 05 00:00:49.051 INFO [stderr]   |
Dec 05 00:00:49.051 INFO [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
Dec 05 00:00:49.051 INFO [stderr]   |                       ^^^^^^  ^^^^^^^^
Dec 05 00:00:49.051 INFO [stderr]   |
Dec 05 00:00:49.051 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 00:00:49.051 INFO [stderr] 
Dec 05 00:00:49.051 INFO [stderr] warning: unused import: `std::sync::mpsc`
Dec 05 00:00:49.051 INFO [stderr]  --> src/cli/interface.rs:3:5
Dec 05 00:00:49.051 INFO [stderr]   |
Dec 05 00:00:49.051 INFO [stderr] 3 | use std::sync::mpsc;
Dec 05 00:00:49.051 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 05 00:00:49.051 INFO [stderr] 
Dec 05 00:00:49.051 INFO [stderr] warning: unused import: `BufRead`
Dec 05 00:00:49.051 INFO [stderr]  --> src/cli/display.rs:1:28
Dec 05 00:00:49.051 INFO [stderr]   |
Dec 05 00:00:49.051 INFO [stderr] 1 | use std::io::{self, Write, BufRead};
Dec 05 00:00:49.051 INFO [stderr]   |                            ^^^^^^^
Dec 05 00:00:49.051 INFO [stderr] 
Dec 05 00:00:49.103 INFO [stderr] warning: unused variable: `error`
Dec 05 00:00:49.103 INFO [stderr]   --> src/cli/display.rs:41:21
Dec 05 00:00:49.103 INFO [stderr]    |
Dec 05 00:00:49.103 INFO [stderr] 41 |                 Err(error) => String::from(""),
Dec 05 00:00:49.103 INFO [stderr]    |                     ^^^^^ help: consider using `_error` instead
Dec 05 00:00:49.103 INFO [stderr]    |
Dec 05 00:00:49.103 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 00:00:49.103 INFO [stderr] 
Dec 05 00:00:49.103 INFO [stderr] warning: unused variable: `buffer_pointer`
Dec 05 00:00:49.103 INFO [stderr]   --> src/cli/display.rs:57:17
Dec 05 00:00:49.103 INFO [stderr]    |
Dec 05 00:00:49.103 INFO [stderr] 57 |         let mut buffer_pointer = 0;
Dec 05 00:00:49.103 INFO [stderr]    |                 ^^^^^^^^^^^^^^ help: consider using `_buffer_pointer` instead
Dec 05 00:00:49.103 INFO [stderr] 
Dec 05 00:00:49.107 INFO [stderr] warning: variable does not need to be mutable
Dec 05 00:00:49.107 INFO [stderr]   --> src/main.rs:12:9
Dec 05 00:00:49.107 INFO [stderr]    |
Dec 05 00:00:49.107 INFO [stderr] 12 |     let mut user_finished = false;
Dec 05 00:00:49.107 INFO [stderr]    |         ----^^^^^^^^^^^^^
Dec 05 00:00:49.107 INFO [stderr]    |         |
Dec 05 00:00:49.107 INFO [stderr]    |         help: remove this `mut`
Dec 05 00:00:49.107 INFO [stderr]    |
Dec 05 00:00:49.107 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 00:00:49.107 INFO [stderr] 
Dec 05 00:00:49.120 INFO [stderr] warning: variable does not need to be mutable
Dec 05 00:00:49.121 INFO [stderr]   --> src/cli/display.rs:57:13
Dec 05 00:00:49.121 INFO [stderr]    |
Dec 05 00:00:49.121 INFO [stderr] 57 |         let mut buffer_pointer = 0;
Dec 05 00:00:49.121 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Dec 05 00:00:49.121 INFO [stderr]    |             |
Dec 05 00:00:49.121 INFO [stderr]    |             help: remove this `mut`
Dec 05 00:00:49.121 INFO [stderr] 
Dec 05 00:00:49.127 INFO [stderr] warning: field is never used: `m_sender`
Dec 05 00:00:49.127 INFO [stderr]  --> src/cli/interface.rs:7:5
Dec 05 00:00:49.127 INFO [stderr]   |
Dec 05 00:00:49.127 INFO [stderr] 7 |     m_sender: Sender<String>,
Dec 05 00:00:49.127 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:00:49.127 INFO [stderr]   |
Dec 05 00:00:49.127 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 00:00:49.127 INFO [stderr] 
Dec 05 00:00:49.131 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:00:49.131 INFO [stderr]   --> src/cli/display.rs:93:9
Dec 05 00:00:49.131 INFO [stderr]    |
Dec 05 00:00:49.131 INFO [stderr] 93 |         io::stdout().flush();
Dec 05 00:00:49.131 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:00:49.131 INFO [stderr]    |
Dec 05 00:00:49.131 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 00:00:49.131 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:00:49.131 INFO [stderr] 
Dec 05 00:00:49.148 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
Dec 05 00:00:49.151 INFO [stderr] su: No module specific data is present
Dec 05 00:00:50.218 INFO running `"docker" "inspect" "292b49d5cc74a750d7a1612ba0855e3c287b5a271ae333a5e42890d53c5e42f3"`
Dec 05 00:00:50.551 INFO running `"docker" "rm" "-f" "292b49d5cc74a750d7a1612ba0855e3c287b5a271ae333a5e42890d53c5e42f3"`
Dec 05 00:00:50.808 INFO [stdout] 292b49d5cc74a750d7a1612ba0855e3c287b5a271ae333a5e42890d53c5e42f3