Dec 19 21:30:04.204 INFO checking UgnilJoZ/rust-pv against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:30:04.204 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/UgnilJoZ/rust-pv:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:30:04.634 INFO [stdout] f199938632340f758fbd8db0b122c1250e79d646d4ab46d2922b162469263ccf
Dec 19 21:30:04.638 INFO running `"docker" "start" "-a" "f199938632340f758fbd8db0b122c1250e79d646d4ab46d2922b162469263ccf"`
Dec 19 21:30:06.524 INFO [stderr]     Checking pv v0.3.0 (/opt/crater/workdir)
Dec 19 21:30:06.780 INFO [stderr] warning: unused import: `Stdio`
Dec 19 21:30:06.780 INFO [stderr]  --> src/main.rs:8:28
Dec 19 21:30:06.780 INFO [stderr]   |
Dec 19 21:30:06.780 INFO [stderr] 8 | use std::process::{Command,Stdio,exit};
Dec 19 21:30:06.780 INFO [stderr]   |                            ^^^^^
Dec 19 21:30:06.780 INFO [stderr]   |
Dec 19 21:30:06.780 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:30:06.780 INFO [stderr] 
Dec 19 21:30:06.780 INFO [stderr] warning: unused import: `fs`
Dec 19 21:30:06.780 INFO [stderr]   --> src/main.rs:10:31
Dec 19 21:30:06.780 INFO [stderr]    |
Dec 19 21:30:06.780 INFO [stderr] 10 | use std::{thread,time,cmp,env,fs};
Dec 19 21:30:06.780 INFO [stderr]    |                               ^^
Dec 19 21:30:06.780 INFO [stderr] 
Dec 19 21:30:06.792 INFO [stderr] warning: unused import: `Stdio`
Dec 19 21:30:06.792 INFO [stderr]  --> src/main.rs:8:28
Dec 19 21:30:06.793 INFO [stderr]   |
Dec 19 21:30:06.793 INFO [stderr] 8 | use std::process::{Command,Stdio,exit};
Dec 19 21:30:06.793 INFO [stderr]   |                            ^^^^^
Dec 19 21:30:06.793 INFO [stderr]   |
Dec 19 21:30:06.793 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:30:06.793 INFO [stderr] 
Dec 19 21:30:06.793 INFO [stderr] warning: unused import: `fs`
Dec 19 21:30:06.793 INFO [stderr]   --> src/main.rs:10:31
Dec 19 21:30:06.793 INFO [stderr]    |
Dec 19 21:30:06.793 INFO [stderr] 10 | use std::{thread,time,cmp,env,fs};
Dec 19 21:30:06.793 INFO [stderr]    |                               ^^
Dec 19 21:30:06.793 INFO [stderr] 
Dec 19 21:30:06.884 INFO [stderr] warning: unused variable: `size`
Dec 19 21:30:06.884 INFO [stderr]   --> src/main.rs:68:48
Dec 19 21:30:06.884 INFO [stderr]    |
Dec 19 21:30:06.884 INFO [stderr] 68 | fn read_bytes<R: Read, W: Write>(file: &mut R, size: usize, output: &mut W, ref bytes_read: &std::sync::Arc<Mutex<usize>>, end_of_file: Arc<Mutex<bool>>) {
Dec 19 21:30:06.884 INFO [stderr]    |                                                ^^^^ help: consider using `_size` instead
Dec 19 21:30:06.884 INFO [stderr]    |
Dec 19 21:30:06.884 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 21:30:06.884 INFO [stderr] 
Dec 19 21:30:06.884 INFO [stderr] warning: unused variable: `size`
Dec 19 21:30:06.884 INFO [stderr]   --> src/main.rs:76:51
Dec 19 21:30:06.884 INFO [stderr]    |
Dec 19 21:30:06.884 INFO [stderr] 76 | fn read_lines<R: BufRead, W: Write>(file: &mut R, size: usize, output: &mut W, ref bytes_read: &std::sync::Arc<Mutex<usize>>, end_of_file: Arc<Mutex<bool>>) {
Dec 19 21:30:06.884 INFO [stderr]    |                                                   ^^^^ help: consider using `_size` instead
Dec 19 21:30:06.884 INFO [stderr] 
Dec 19 21:30:06.884 INFO [stderr] warning: unused variable: `prog`
Dec 19 21:30:06.884 INFO [stderr]   --> src/main.rs:88:6
Dec 19 21:30:06.884 INFO [stderr]    |
Dec 19 21:30:06.885 INFO [stderr] 88 |     let prog = args[0].clone();
Dec 19 21:30:06.885 INFO [stderr]    |         ^^^^ help: consider using `_prog` instead
Dec 19 21:30:06.885 INFO [stderr] 
Dec 19 21:30:06.898 INFO [stderr] warning: unused variable: `size`
Dec 19 21:30:06.898 INFO [stderr]   --> src/main.rs:68:48
Dec 19 21:30:06.898 INFO [stderr]    |
Dec 19 21:30:06.898 INFO [stderr] 68 | fn read_bytes<R: Read, W: Write>(file: &mut R, size: usize, output: &mut W, ref bytes_read: &std::sync::Arc<Mutex<usize>>, end_of_file: Arc<Mutex<bool>>) {
Dec 19 21:30:06.898 INFO [stderr]    |                                                ^^^^ help: consider using `_size` instead
Dec 19 21:30:06.898 INFO [stderr]    |
Dec 19 21:30:06.898 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 21:30:06.898 INFO [stderr] 
Dec 19 21:30:06.898 INFO [stderr] warning: unused variable: `size`
Dec 19 21:30:06.898 INFO [stderr]   --> src/main.rs:76:51
Dec 19 21:30:06.899 INFO [stderr]    |
Dec 19 21:30:06.899 INFO [stderr] 76 | fn read_lines<R: BufRead, W: Write>(file: &mut R, size: usize, output: &mut W, ref bytes_read: &std::sync::Arc<Mutex<usize>>, end_of_file: Arc<Mutex<bool>>) {
Dec 19 21:30:06.899 INFO [stderr]    |                                                   ^^^^ help: consider using `_size` instead
Dec 19 21:30:06.899 INFO [stderr] 
Dec 19 21:30:06.899 INFO [stderr] warning: unused variable: `prog`
Dec 19 21:30:06.899 INFO [stderr]   --> src/main.rs:88:6
Dec 19 21:30:06.899 INFO [stderr]    |
Dec 19 21:30:06.899 INFO [stderr] 88 |     let prog = args[0].clone();
Dec 19 21:30:06.899 INFO [stderr]    |         ^^^^ help: consider using `_prog` instead
Dec 19 21:30:06.899 INFO [stderr] 
Dec 19 21:30:06.908 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:30:06.910 INFO [stderr]    --> src/main.rs:142:7
Dec 19 21:30:06.910 INFO [stderr]     |
Dec 19 21:30:06.910 INFO [stderr] 142 |         let mut file = File::open(filename).unwrap();
Dec 19 21:30:06.910 INFO [stderr]     |             ----^^^^
Dec 19 21:30:06.910 INFO [stderr]     |             |
Dec 19 21:30:06.910 INFO [stderr]     |             help: remove this `mut`
Dec 19 21:30:06.910 INFO [stderr]     |
Dec 19 21:30:06.910 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 21:30:06.910 INFO [stderr] 
Dec 19 21:30:06.910 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:30:06.910 INFO [stderr]    --> src/main.rs:149:7
Dec 19 21:30:06.910 INFO [stderr]     |
Dec 19 21:30:06.910 INFO [stderr] 149 |         let mut file = io::stdin();
Dec 19 21:30:06.910 INFO [stderr]     |             ----^^^^
Dec 19 21:30:06.910 INFO [stderr]     |             |
Dec 19 21:30:06.910 INFO [stderr]     |             help: remove this `mut`
Dec 19 21:30:06.910 INFO [stderr] 
Dec 19 21:30:06.910 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.910 INFO [stderr]   --> src/main.rs:36:2
Dec 19 21:30:06.910 INFO [stderr]    |
Dec 19 21:30:06.910 INFO [stderr] 36 |     io::stderr().write(sequence.as_slice());
Dec 19 21:30:06.910 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.910 INFO [stderr]    |
Dec 19 21:30:06.910 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:30:06.910 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.910 INFO [stderr] 
Dec 19 21:30:06.910 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.910 INFO [stderr]   --> src/main.rs:37:2
Dec 19 21:30:06.910 INFO [stderr]    |
Dec 19 21:30:06.910 INFO [stderr] 37 |     io::stderr().flush();
Dec 19 21:30:06.910 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.910 INFO [stderr]    |
Dec 19 21:30:06.910 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.910 INFO [stderr] 
Dec 19 21:30:06.910 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.910 INFO [stderr]   --> src/main.rs:43:2
Dec 19 21:30:06.910 INFO [stderr]    |
Dec 19 21:30:06.910 INFO [stderr] 43 |     io::stderr().write(sequence.as_slice());
Dec 19 21:30:06.910 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.910 INFO [stderr]    |
Dec 19 21:30:06.910 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.910 INFO [stderr] 
Dec 19 21:30:06.910 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.910 INFO [stderr]   --> src/main.rs:44:2
Dec 19 21:30:06.910 INFO [stderr]    |
Dec 19 21:30:06.910 INFO [stderr] 44 |     io::stderr().flush();
Dec 19 21:30:06.910 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.910 INFO [stderr]    |
Dec 19 21:30:06.910 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.910 INFO [stderr] 
Dec 19 21:30:06.910 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.910 INFO [stderr]    --> src/main.rs:161:2
Dec 19 21:30:06.910 INFO [stderr]     |
Dec 19 21:30:06.910 INFO [stderr] 161 |     write!(io::stderr(), "\n{} {}.\n", *bytes_read.lock().unwrap(), unit);
Dec 19 21:30:06.910 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.910 INFO [stderr]     |
Dec 19 21:30:06.910 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.910 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 19 21:30:06.910 INFO [stderr] 
Dec 19 21:30:06.944 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:30:06.944 INFO [stderr]    --> src/main.rs:142:7
Dec 19 21:30:06.944 INFO [stderr]     |
Dec 19 21:30:06.944 INFO [stderr] 142 |         let mut file = File::open(filename).unwrap();
Dec 19 21:30:06.944 INFO [stderr]     |             ----^^^^
Dec 19 21:30:06.944 INFO [stderr]     |             |
Dec 19 21:30:06.945 INFO [stderr]     |             help: remove this `mut`
Dec 19 21:30:06.945 INFO [stderr]     |
Dec 19 21:30:06.945 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 21:30:06.945 INFO [stderr] 
Dec 19 21:30:06.945 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:30:06.945 INFO [stderr]    --> src/main.rs:149:7
Dec 19 21:30:06.945 INFO [stderr]     |
Dec 19 21:30:06.945 INFO [stderr] 149 |         let mut file = io::stdin();
Dec 19 21:30:06.945 INFO [stderr]     |             ----^^^^
Dec 19 21:30:06.945 INFO [stderr]     |             |
Dec 19 21:30:06.945 INFO [stderr]     |             help: remove this `mut`
Dec 19 21:30:06.945 INFO [stderr] 
Dec 19 21:30:06.945 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.945 INFO [stderr]   --> src/main.rs:36:2
Dec 19 21:30:06.945 INFO [stderr]    |
Dec 19 21:30:06.945 INFO [stderr] 36 |     io::stderr().write(sequence.as_slice());
Dec 19 21:30:06.945 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.945 INFO [stderr]    |
Dec 19 21:30:06.945 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:30:06.945 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.945 INFO [stderr] 
Dec 19 21:30:06.945 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.945 INFO [stderr]   --> src/main.rs:37:2
Dec 19 21:30:06.945 INFO [stderr]    |
Dec 19 21:30:06.945 INFO [stderr] 37 |     io::stderr().flush();
Dec 19 21:30:06.945 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.945 INFO [stderr]    |
Dec 19 21:30:06.945 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.945 INFO [stderr] 
Dec 19 21:30:06.945 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.945 INFO [stderr]   --> src/main.rs:43:2
Dec 19 21:30:06.945 INFO [stderr]    |
Dec 19 21:30:06.945 INFO [stderr] 43 |     io::stderr().write(sequence.as_slice());
Dec 19 21:30:06.945 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.945 INFO [stderr]    |
Dec 19 21:30:06.945 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.945 INFO [stderr] 
Dec 19 21:30:06.945 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.945 INFO [stderr]   --> src/main.rs:44:2
Dec 19 21:30:06.945 INFO [stderr]    |
Dec 19 21:30:06.945 INFO [stderr] 44 |     io::stderr().flush();
Dec 19 21:30:06.945 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.945 INFO [stderr]    |
Dec 19 21:30:06.945 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.945 INFO [stderr] 
Dec 19 21:30:06.945 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:30:06.945 INFO [stderr]    --> src/main.rs:161:2
Dec 19 21:30:06.945 INFO [stderr]     |
Dec 19 21:30:06.945 INFO [stderr] 161 |     write!(io::stderr(), "\n{} {}.\n", *bytes_read.lock().unwrap(), unit);
Dec 19 21:30:06.945 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:30:06.945 INFO [stderr]     |
Dec 19 21:30:06.945 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:30:06.945 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 19 21:30:06.945 INFO [stderr] 
Dec 19 21:30:06.980 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Dec 19 21:30:07.622 INFO running `"docker" "inspect" "f199938632340f758fbd8db0b122c1250e79d646d4ab46d2922b162469263ccf"`
Dec 19 21:30:07.970 INFO running `"docker" "rm" "-f" "f199938632340f758fbd8db0b122c1250e79d646d4ab46d2922b162469263ccf"`
Dec 19 21:30:08.240 INFO [stdout] f199938632340f758fbd8db0b122c1250e79d646d4ab46d2922b162469263ccf