Dec 11 23:47:35.386 INFO checking UgnilJoZ/rust-pv against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 23:47:35.386 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 23:47:35.622 INFO [stdout] 497a50fc0a7363a2a08e9cb3492f9f83257e97dbb916d56fb6a72430fb2a1dde
Dec 11 23:47:35.626 INFO running `"docker" "start" "-a" "497a50fc0a7363a2a08e9cb3492f9f83257e97dbb916d56fb6a72430fb2a1dde"`
Dec 11 23:47:36.212 INFO [stderr] usermod: no changes
Dec 11 23:47:36.273 INFO [stderr]     Checking pv v0.3.0 (/source)
Dec 11 23:47:36.844 INFO [stderr] warning: unused import: `Stdio`
Dec 11 23:47:36.844 INFO [stderr]  --> src/main.rs:8:28
Dec 11 23:47:36.844 INFO [stderr]   |
Dec 11 23:47:36.845 INFO [stderr] 8 | use std::process::{Command,Stdio,exit};
Dec 11 23:47:36.845 INFO [stderr]   |                            ^^^^^
Dec 11 23:47:36.845 INFO [stderr]   |
Dec 11 23:47:36.845 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 23:47:36.845 INFO [stderr] 
Dec 11 23:47:36.845 INFO [stderr] warning: unused import: `fs`
Dec 11 23:47:36.845 INFO [stderr]   --> src/main.rs:10:31
Dec 11 23:47:36.845 INFO [stderr]    |
Dec 11 23:47:36.845 INFO [stderr] 10 | use std::{thread,time,cmp,env,fs};
Dec 11 23:47:36.845 INFO [stderr]    |                               ^^
Dec 11 23:47:36.845 INFO [stderr] 
Dec 11 23:47:36.921 INFO [stderr] warning: unused variable: `size`
Dec 11 23:47:36.921 INFO [stderr]   --> src/main.rs:68:48
Dec 11 23:47:36.921 INFO [stderr]    |
Dec 11 23:47:36.921 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 11 23:47:36.921 INFO [stderr]    |                                                ^^^^ help: consider using `_size` instead
Dec 11 23:47:36.922 INFO [stderr]    |
Dec 11 23:47:36.922 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 23:47:36.922 INFO [stderr] 
Dec 11 23:47:36.922 INFO [stderr] warning: unused variable: `size`
Dec 11 23:47:36.922 INFO [stderr]   --> src/main.rs:76:51
Dec 11 23:47:36.922 INFO [stderr]    |
Dec 11 23:47:36.923 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 11 23:47:36.923 INFO [stderr]    |                                                   ^^^^ help: consider using `_size` instead
Dec 11 23:47:36.923 INFO [stderr] 
Dec 11 23:47:36.923 INFO [stderr] warning: unused variable: `prog`
Dec 11 23:47:36.924 INFO [stderr]   --> src/main.rs:88:6
Dec 11 23:47:36.924 INFO [stderr]    |
Dec 11 23:47:36.924 INFO [stderr] 88 |     let prog = args[0].clone();
Dec 11 23:47:36.924 INFO [stderr]    |         ^^^^ help: consider using `_prog` instead
Dec 11 23:47:36.924 INFO [stderr] 
Dec 11 23:47:36.927 INFO [stderr] warning: unused import: `Stdio`
Dec 11 23:47:36.927 INFO [stderr]  --> src/main.rs:8:28
Dec 11 23:47:36.928 INFO [stderr]   |
Dec 11 23:47:36.928 INFO [stderr] 8 | use std::process::{Command,Stdio,exit};
Dec 11 23:47:36.928 INFO [stderr]   |                            ^^^^^
Dec 11 23:47:36.928 INFO [stderr]   |
Dec 11 23:47:36.932 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 23:47:36.932 INFO [stderr] 
Dec 11 23:47:36.932 INFO [stderr] warning: unused import: `fs`
Dec 11 23:47:36.932 INFO [stderr]   --> src/main.rs:10:31
Dec 11 23:47:36.932 INFO [stderr]    |
Dec 11 23:47:36.932 INFO [stderr] 10 | use std::{thread,time,cmp,env,fs};
Dec 11 23:47:36.932 INFO [stderr]    |                               ^^
Dec 11 23:47:36.932 INFO [stderr] 
Dec 11 23:47:36.956 INFO [stderr] warning: variable does not need to be mutable
Dec 11 23:47:36.956 INFO [stderr]    --> src/main.rs:142:7
Dec 11 23:47:36.956 INFO [stderr]     |
Dec 11 23:47:36.957 INFO [stderr] 142 |         let mut file = File::open(filename).unwrap();
Dec 11 23:47:36.957 INFO [stderr]     |             ----^^^^
Dec 11 23:47:36.957 INFO [stderr]     |             |
Dec 11 23:47:36.957 INFO [stderr]     |             help: remove this `mut`
Dec 11 23:47:36.957 INFO [stderr]     |
Dec 11 23:47:36.957 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 23:47:36.957 INFO [stderr] 
Dec 11 23:47:36.957 INFO [stderr] warning: variable does not need to be mutable
Dec 11 23:47:36.957 INFO [stderr]    --> src/main.rs:149:7
Dec 11 23:47:36.957 INFO [stderr]     |
Dec 11 23:47:36.957 INFO [stderr] 149 |         let mut file = io::stdin();
Dec 11 23:47:36.957 INFO [stderr]     |             ----^^^^
Dec 11 23:47:36.957 INFO [stderr]     |             |
Dec 11 23:47:36.957 INFO [stderr]     |             help: remove this `mut`
Dec 11 23:47:36.957 INFO [stderr] 
Dec 11 23:47:36.957 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:36.957 INFO [stderr]   --> src/main.rs:36:2
Dec 11 23:47:36.957 INFO [stderr]    |
Dec 11 23:47:36.957 INFO [stderr] 36 |     io::stderr().write(sequence.as_slice());
Dec 11 23:47:36.957 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:36.957 INFO [stderr]    |
Dec 11 23:47:36.957 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 23:47:36.957 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:36.957 INFO [stderr] 
Dec 11 23:47:36.957 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:36.957 INFO [stderr]   --> src/main.rs:37:2
Dec 11 23:47:36.957 INFO [stderr]    |
Dec 11 23:47:36.957 INFO [stderr] 37 |     io::stderr().flush();
Dec 11 23:47:36.957 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:36.957 INFO [stderr]    |
Dec 11 23:47:36.957 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:36.957 INFO [stderr] 
Dec 11 23:47:36.957 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:36.957 INFO [stderr]   --> src/main.rs:43:2
Dec 11 23:47:36.957 INFO [stderr]    |
Dec 11 23:47:36.957 INFO [stderr] 43 |     io::stderr().write(sequence.as_slice());
Dec 11 23:47:36.957 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:36.957 INFO [stderr]    |
Dec 11 23:47:36.957 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:36.958 INFO [stderr] 
Dec 11 23:47:36.958 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:36.958 INFO [stderr]   --> src/main.rs:44:2
Dec 11 23:47:36.958 INFO [stderr]    |
Dec 11 23:47:36.958 INFO [stderr] 44 |     io::stderr().flush();
Dec 11 23:47:36.958 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:36.958 INFO [stderr]    |
Dec 11 23:47:36.958 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:36.958 INFO [stderr] 
Dec 11 23:47:36.958 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:36.958 INFO [stderr]    --> src/main.rs:161:2
Dec 11 23:47:36.958 INFO [stderr]     |
Dec 11 23:47:36.958 INFO [stderr] 161 |     write!(io::stderr(), "\n{} {}.\n", *bytes_read.lock().unwrap(), unit);
Dec 11 23:47:36.958 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:36.958 INFO [stderr]     |
Dec 11 23:47:36.958 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:36.958 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 11 23:47:36.958 INFO [stderr] 
Dec 11 23:47:37.017 INFO [stderr] warning: unused variable: `size`
Dec 11 23:47:37.017 INFO [stderr]   --> src/main.rs:68:48
Dec 11 23:47:37.017 INFO [stderr]    |
Dec 11 23:47:37.017 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 11 23:47:37.017 INFO [stderr]    |                                                ^^^^ help: consider using `_size` instead
Dec 11 23:47:37.017 INFO [stderr]    |
Dec 11 23:47:37.017 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 23:47:37.017 INFO [stderr] 
Dec 11 23:47:37.017 INFO [stderr] warning: unused variable: `size`
Dec 11 23:47:37.017 INFO [stderr]   --> src/main.rs:76:51
Dec 11 23:47:37.017 INFO [stderr]    |
Dec 11 23:47:37.017 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 11 23:47:37.017 INFO [stderr]    |                                                   ^^^^ help: consider using `_size` instead
Dec 11 23:47:37.018 INFO [stderr] 
Dec 11 23:47:37.018 INFO [stderr] warning: unused variable: `prog`
Dec 11 23:47:37.018 INFO [stderr]   --> src/main.rs:88:6
Dec 11 23:47:37.018 INFO [stderr]    |
Dec 11 23:47:37.018 INFO [stderr] 88 |     let prog = args[0].clone();
Dec 11 23:47:37.018 INFO [stderr]    |         ^^^^ help: consider using `_prog` instead
Dec 11 23:47:37.018 INFO [stderr] 
Dec 11 23:47:37.048 INFO [stderr] warning: variable does not need to be mutable
Dec 11 23:47:37.048 INFO [stderr]    --> src/main.rs:142:7
Dec 11 23:47:37.048 INFO [stderr]     |
Dec 11 23:47:37.048 INFO [stderr] 142 |         let mut file = File::open(filename).unwrap();
Dec 11 23:47:37.048 INFO [stderr]     |             ----^^^^
Dec 11 23:47:37.048 INFO [stderr]     |             |
Dec 11 23:47:37.048 INFO [stderr]     |             help: remove this `mut`
Dec 11 23:47:37.048 INFO [stderr]     |
Dec 11 23:47:37.048 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 23:47:37.048 INFO [stderr] 
Dec 11 23:47:37.048 INFO [stderr] warning: variable does not need to be mutable
Dec 11 23:47:37.048 INFO [stderr]    --> src/main.rs:149:7
Dec 11 23:47:37.048 INFO [stderr]     |
Dec 11 23:47:37.048 INFO [stderr] 149 |         let mut file = io::stdin();
Dec 11 23:47:37.048 INFO [stderr]     |             ----^^^^
Dec 11 23:47:37.048 INFO [stderr]     |             |
Dec 11 23:47:37.048 INFO [stderr]     |             help: remove this `mut`
Dec 11 23:47:37.048 INFO [stderr] 
Dec 11 23:47:37.049 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:37.049 INFO [stderr]   --> src/main.rs:36:2
Dec 11 23:47:37.049 INFO [stderr]    |
Dec 11 23:47:37.049 INFO [stderr] 36 |     io::stderr().write(sequence.as_slice());
Dec 11 23:47:37.049 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:37.049 INFO [stderr]    |
Dec 11 23:47:37.049 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 23:47:37.049 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:37.049 INFO [stderr] 
Dec 11 23:47:37.050 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:37.050 INFO [stderr]   --> src/main.rs:37:2
Dec 11 23:47:37.050 INFO [stderr]    |
Dec 11 23:47:37.050 INFO [stderr] 37 |     io::stderr().flush();
Dec 11 23:47:37.050 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:37.050 INFO [stderr]    |
Dec 11 23:47:37.050 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:37.050 INFO [stderr] 
Dec 11 23:47:37.050 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:37.050 INFO [stderr]   --> src/main.rs:43:2
Dec 11 23:47:37.050 INFO [stderr]    |
Dec 11 23:47:37.050 INFO [stderr] 43 |     io::stderr().write(sequence.as_slice());
Dec 11 23:47:37.050 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:37.050 INFO [stderr]    |
Dec 11 23:47:37.050 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:37.050 INFO [stderr] 
Dec 11 23:47:37.050 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:37.050 INFO [stderr]   --> src/main.rs:44:2
Dec 11 23:47:37.050 INFO [stderr]    |
Dec 11 23:47:37.050 INFO [stderr] 44 |     io::stderr().flush();
Dec 11 23:47:37.050 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:37.050 INFO [stderr]    |
Dec 11 23:47:37.050 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:37.050 INFO [stderr] 
Dec 11 23:47:37.051 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 23:47:37.051 INFO [stderr]    --> src/main.rs:161:2
Dec 11 23:47:37.051 INFO [stderr]     |
Dec 11 23:47:37.051 INFO [stderr] 161 |     write!(io::stderr(), "\n{} {}.\n", *bytes_read.lock().unwrap(), unit);
Dec 11 23:47:37.051 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 23:47:37.051 INFO [stderr]     |
Dec 11 23:47:37.051 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 23:47:37.051 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 11 23:47:37.051 INFO [stderr] 
Dec 11 23:47:37.065 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
Dec 11 23:47:37.068 INFO [stderr] su: No module specific data is present
Dec 11 23:47:37.566 INFO running `"docker" "inspect" "497a50fc0a7363a2a08e9cb3492f9f83257e97dbb916d56fb6a72430fb2a1dde"`
Dec 11 23:47:37.683 INFO running `"docker" "rm" "-f" "497a50fc0a7363a2a08e9cb3492f9f83257e97dbb916d56fb6a72430fb2a1dde"`
Dec 11 23:47:37.816 INFO [stdout] 497a50fc0a7363a2a08e9cb3492f9f83257e97dbb916d56fb6a72430fb2a1dde