Dec 06 09:32:29.673 INFO testing StephenAshmore/synth against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 06 09:32:29.673 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-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 06 09:32:30.096 INFO [stdout] a3a8f7ac72f47567c7e4cadff9ee69e5bc7ed85a31b1cdaf297eb70409bbe966
Dec 06 09:32:30.098 INFO running `"docker" "start" "-a" "a3a8f7ac72f47567c7e4cadff9ee69e5bc7ed85a31b1cdaf297eb70409bbe966"`
Dec 06 09:32:30.934 INFO [stderr] usermod: no changes
Dec 06 09:32:30.995 INFO [stderr]    Compiling synth v0.1.0 (/source)
Dec 06 09:32:31.244 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 06 09:32:31.244 INFO [stderr]  --> src/main.rs:3:23
Dec 06 09:32:31.244 INFO [stderr]   |
Dec 06 09:32:31.244 INFO [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
Dec 06 09:32:31.244 INFO [stderr]   |                       ^^^^^^  ^^^^^^^^
Dec 06 09:32:31.244 INFO [stderr]   |
Dec 06 09:32:31.244 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 09:32:31.244 INFO [stderr] 
Dec 06 09:32:31.244 INFO [stderr] warning: unused import: `std::sync::mpsc`
Dec 06 09:32:31.244 INFO [stderr]  --> src/cli/interface.rs:3:5
Dec 06 09:32:31.244 INFO [stderr]   |
Dec 06 09:32:31.244 INFO [stderr] 3 | use std::sync::mpsc;
Dec 06 09:32:31.244 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 06 09:32:31.244 INFO [stderr] 
Dec 06 09:32:31.244 INFO [stderr] warning: unused import: `BufRead`
Dec 06 09:32:31.244 INFO [stderr]  --> src/cli/display.rs:1:28
Dec 06 09:32:31.244 INFO [stderr]   |
Dec 06 09:32:31.244 INFO [stderr] 1 | use std::io::{self, Write, BufRead};
Dec 06 09:32:31.244 INFO [stderr]   |                            ^^^^^^^
Dec 06 09:32:31.244 INFO [stderr] 
Dec 06 09:32:31.304 INFO [stderr] warning: unused variable: `error`
Dec 06 09:32:31.304 INFO [stderr]   --> src/cli/display.rs:41:21
Dec 06 09:32:31.304 INFO [stderr]    |
Dec 06 09:32:31.304 INFO [stderr] 41 |                 Err(error) => String::from(""),
Dec 06 09:32:31.304 INFO [stderr]    |                     ^^^^^ help: consider using `_error` instead
Dec 06 09:32:31.304 INFO [stderr]    |
Dec 06 09:32:31.304 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 06 09:32:31.304 INFO [stderr] 
Dec 06 09:32:31.304 INFO [stderr] warning: unused variable: `buffer_pointer`
Dec 06 09:32:31.304 INFO [stderr]   --> src/cli/display.rs:57:17
Dec 06 09:32:31.304 INFO [stderr]    |
Dec 06 09:32:31.304 INFO [stderr] 57 |         let mut buffer_pointer = 0;
Dec 06 09:32:31.304 INFO [stderr]    |                 ^^^^^^^^^^^^^^ help: consider using `_buffer_pointer` instead
Dec 06 09:32:31.304 INFO [stderr] 
Dec 06 09:32:31.304 INFO [stderr] warning: variable does not need to be mutable
Dec 06 09:32:31.304 INFO [stderr]   --> src/main.rs:12:9
Dec 06 09:32:31.304 INFO [stderr]    |
Dec 06 09:32:31.304 INFO [stderr] 12 |     let mut user_finished = false;
Dec 06 09:32:31.305 INFO [stderr]    |         ----^^^^^^^^^^^^^
Dec 06 09:32:31.305 INFO [stderr]    |         |
Dec 06 09:32:31.305 INFO [stderr]    |         help: remove this `mut`
Dec 06 09:32:31.305 INFO [stderr]    |
Dec 06 09:32:31.305 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 09:32:31.305 INFO [stderr] 
Dec 06 09:32:31.316 INFO [stderr] warning: variable does not need to be mutable
Dec 06 09:32:31.316 INFO [stderr]   --> src/cli/display.rs:57:13
Dec 06 09:32:31.316 INFO [stderr]    |
Dec 06 09:32:31.316 INFO [stderr] 57 |         let mut buffer_pointer = 0;
Dec 06 09:32:31.316 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Dec 06 09:32:31.316 INFO [stderr]    |             |
Dec 06 09:32:31.316 INFO [stderr]    |             help: remove this `mut`
Dec 06 09:32:31.316 INFO [stderr] 
Dec 06 09:32:31.316 INFO [stderr] warning: field is never used: `m_sender`
Dec 06 09:32:31.316 INFO [stderr]  --> src/cli/interface.rs:7:5
Dec 06 09:32:31.316 INFO [stderr]   |
Dec 06 09:32:31.316 INFO [stderr] 7 |     m_sender: Sender<String>,
Dec 06 09:32:31.316 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 09:32:31.316 INFO [stderr]   |
Dec 06 09:32:31.316 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 09:32:31.316 INFO [stderr] 
Dec 06 09:32:31.328 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 09:32:31.328 INFO [stderr]   --> src/cli/display.rs:93:9
Dec 06 09:32:31.328 INFO [stderr]    |
Dec 06 09:32:31.328 INFO [stderr] 93 |         io::stdout().flush();
Dec 06 09:32:31.328 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 06 09:32:31.328 INFO [stderr]    |
Dec 06 09:32:31.328 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 09:32:31.328 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 09:32:31.328 INFO [stderr] 
Dec 06 09:32:32.537 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
Dec 06 09:32:32.540 INFO [stderr] su: No module specific data is present
Dec 06 09:32:33.259 INFO running `"docker" "inspect" "a3a8f7ac72f47567c7e4cadff9ee69e5bc7ed85a31b1cdaf297eb70409bbe966"`
Dec 06 09:32:33.440 INFO running `"docker" "rm" "-f" "a3a8f7ac72f47567c7e4cadff9ee69e5bc7ed85a31b1cdaf297eb70409bbe966"`
Dec 06 09:32:33.585 INFO [stdout] a3a8f7ac72f47567c7e4cadff9ee69e5bc7ed85a31b1cdaf297eb70409bbe966
Dec 06 09:32:33.589 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-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 06 09:32:33.826 INFO [stdout] 2ccc6b173f2f5e68d9ac4dc2c406fb0228f1609a0d3fdf782a2e8f8d7dd17e4b
Dec 06 09:32:33.828 INFO running `"docker" "start" "-a" "2ccc6b173f2f5e68d9ac4dc2c406fb0228f1609a0d3fdf782a2e8f8d7dd17e4b"`
Dec 06 09:32:34.277 INFO [stderr] usermod: no changes
Dec 06 09:32:34.325 INFO [stderr]    Compiling synth v0.1.0 (/source)
Dec 06 09:32:34.580 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 06 09:32:34.580 INFO [stderr]  --> src/main.rs:3:23
Dec 06 09:32:34.580 INFO [stderr]   |
Dec 06 09:32:34.580 INFO [stderr] 3 | use std::sync::mpsc::{Sender, Receiver};
Dec 06 09:32:34.580 INFO [stderr]   |                       ^^^^^^  ^^^^^^^^
Dec 06 09:32:34.580 INFO [stderr]   |
Dec 06 09:32:34.580 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 06 09:32:34.580 INFO [stderr] 
Dec 06 09:32:34.580 INFO [stderr] warning: unused import: `std::sync::mpsc`
Dec 06 09:32:34.580 INFO [stderr]  --> src/cli/interface.rs:3:5
Dec 06 09:32:34.580 INFO [stderr]   |
Dec 06 09:32:34.580 INFO [stderr] 3 | use std::sync::mpsc;
Dec 06 09:32:34.580 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 06 09:32:34.580 INFO [stderr] 
Dec 06 09:32:34.580 INFO [stderr] warning: unused import: `BufRead`
Dec 06 09:32:34.580 INFO [stderr]  --> src/cli/display.rs:1:28
Dec 06 09:32:34.580 INFO [stderr]   |
Dec 06 09:32:34.580 INFO [stderr] 1 | use std::io::{self, Write, BufRead};
Dec 06 09:32:34.580 INFO [stderr]   |                            ^^^^^^^
Dec 06 09:32:34.580 INFO [stderr] 
Dec 06 09:32:34.640 INFO [stderr] warning: unused variable: `error`
Dec 06 09:32:34.640 INFO [stderr]   --> src/cli/display.rs:41:21
Dec 06 09:32:34.640 INFO [stderr]    |
Dec 06 09:32:34.640 INFO [stderr] 41 |                 Err(error) => String::from(""),
Dec 06 09:32:34.640 INFO [stderr]    |                     ^^^^^ help: consider using `_error` instead
Dec 06 09:32:34.640 INFO [stderr]    |
Dec 06 09:32:34.640 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 06 09:32:34.640 INFO [stderr] 
Dec 06 09:32:34.640 INFO [stderr] warning: unused variable: `buffer_pointer`
Dec 06 09:32:34.640 INFO [stderr]   --> src/cli/display.rs:57:17
Dec 06 09:32:34.640 INFO [stderr]    |
Dec 06 09:32:34.640 INFO [stderr] 57 |         let mut buffer_pointer = 0;
Dec 06 09:32:34.640 INFO [stderr]    |                 ^^^^^^^^^^^^^^ help: consider using `_buffer_pointer` instead
Dec 06 09:32:34.640 INFO [stderr] 
Dec 06 09:32:34.640 INFO [stderr] warning: variable does not need to be mutable
Dec 06 09:32:34.640 INFO [stderr]   --> src/main.rs:12:9
Dec 06 09:32:34.640 INFO [stderr]    |
Dec 06 09:32:34.640 INFO [stderr] 12 |     let mut user_finished = false;
Dec 06 09:32:34.640 INFO [stderr]    |         ----^^^^^^^^^^^^^
Dec 06 09:32:34.640 INFO [stderr]    |         |
Dec 06 09:32:34.640 INFO [stderr]    |         help: remove this `mut`
Dec 06 09:32:34.640 INFO [stderr]    |
Dec 06 09:32:34.641 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 09:32:34.641 INFO [stderr] 
Dec 06 09:32:34.652 INFO [stderr] warning: variable does not need to be mutable
Dec 06 09:32:34.652 INFO [stderr]   --> src/cli/display.rs:57:13
Dec 06 09:32:34.652 INFO [stderr]    |
Dec 06 09:32:34.652 INFO [stderr] 57 |         let mut buffer_pointer = 0;
Dec 06 09:32:34.652 INFO [stderr]    |             ----^^^^^^^^^^^^^^
Dec 06 09:32:34.652 INFO [stderr]    |             |
Dec 06 09:32:34.652 INFO [stderr]    |             help: remove this `mut`
Dec 06 09:32:34.652 INFO [stderr] 
Dec 06 09:32:34.652 INFO [stderr] warning: field is never used: `m_sender`
Dec 06 09:32:34.652 INFO [stderr]  --> src/cli/interface.rs:7:5
Dec 06 09:32:34.652 INFO [stderr]   |
Dec 06 09:32:34.652 INFO [stderr] 7 |     m_sender: Sender<String>,
Dec 06 09:32:34.652 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 06 09:32:34.652 INFO [stderr]   |
Dec 06 09:32:34.652 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 06 09:32:34.652 INFO [stderr] 
Dec 06 09:32:34.661 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 06 09:32:34.662 INFO [stderr]   --> src/cli/display.rs:93:9
Dec 06 09:32:34.662 INFO [stderr]    |
Dec 06 09:32:34.662 INFO [stderr] 93 |         io::stdout().flush();
Dec 06 09:32:34.662 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 06 09:32:34.662 INFO [stderr]    |
Dec 06 09:32:34.662 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 06 09:32:34.662 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 06 09:32:34.662 INFO [stderr] 
Dec 06 09:32:34.980 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
Dec 06 09:32:34.980 INFO [stderr] su: No module specific data is present
Dec 06 09:32:35.365 INFO running `"docker" "inspect" "2ccc6b173f2f5e68d9ac4dc2c406fb0228f1609a0d3fdf782a2e8f8d7dd17e4b"`
Dec 06 09:32:35.462 INFO running `"docker" "rm" "-f" "2ccc6b173f2f5e68d9ac4dc2c406fb0228f1609a0d3fdf782a2e8f8d7dd17e4b"`
Dec 06 09:32:35.542 INFO [stdout] 2ccc6b173f2f5e68d9ac4dc2c406fb0228f1609a0d3fdf782a2e8f8d7dd17e4b
Dec 06 09:32:35.544 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-4/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen" "-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 06 09:32:35.727 INFO [stdout] 8f200c19f2a2bdec43e58d52b41aba6c632dd66f5f9a8d4c14698770b769efe2
Dec 06 09:32:35.730 INFO running `"docker" "start" "-a" "8f200c19f2a2bdec43e58d52b41aba6c632dd66f5f9a8d4c14698770b769efe2"`
Dec 06 09:32:36.312 INFO [stderr] usermod: no changes
Dec 06 09:32:36.346 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 06 09:32:36.347 INFO [stderr]      Running /target/debug/deps/synth-7d15dd02ba0c38a4
Dec 06 09:32:36.349 INFO [stdout] 
Dec 06 09:32:36.349 INFO [stdout] running 0 tests
Dec 06 09:32:36.349 INFO [stdout] 
Dec 06 09:32:36.349 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 09:32:36.349 INFO [stdout] 
Dec 06 09:32:36.350 INFO [stderr] su: No module specific data is present
Dec 06 09:32:36.781 INFO running `"docker" "inspect" "8f200c19f2a2bdec43e58d52b41aba6c632dd66f5f9a8d4c14698770b769efe2"`
Dec 06 09:32:36.974 INFO running `"docker" "rm" "-f" "8f200c19f2a2bdec43e58d52b41aba6c632dd66f5f9a8d4c14698770b769efe2"`
Dec 06 09:32:37.058 INFO [stdout] 8f200c19f2a2bdec43e58d52b41aba6c632dd66f5f9a8d4c14698770b769efe2