[INFO] updating cached repository UgnilJoZ/rust-pv
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/UgnilJoZ/rust-pv
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/UgnilJoZ/rust-pv" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/UgnilJoZ/rust-pv"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/UgnilJoZ/rust-pv'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/UgnilJoZ/rust-pv" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/UgnilJoZ/rust-pv"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/UgnilJoZ/rust-pv'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e166e54f5b869ac48c661d727462e85a183554d6
[INFO] sha for GitHub repo UgnilJoZ/rust-pv: e166e54f5b869ac48c661d727462e85a183554d6
[INFO] validating manifest of UgnilJoZ/rust-pv on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of UgnilJoZ/rust-pv on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing UgnilJoZ/rust-pv
[INFO] finished frobbing UgnilJoZ/rust-pv
[INFO] frobbed toml for UgnilJoZ/rust-pv written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/UgnilJoZ/rust-pv/Cargo.toml
[INFO] started frobbing UgnilJoZ/rust-pv
[INFO] finished frobbing UgnilJoZ/rust-pv
[INFO] frobbed toml for UgnilJoZ/rust-pv written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/UgnilJoZ/rust-pv/Cargo.toml
[INFO] crate UgnilJoZ/rust-pv already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking UgnilJoZ/rust-pv against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-7/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/UgnilJoZ/rust-pv:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6bf93fe8fdd04ce6110ba04eac597050440795335e7bb8bc6f6c142d6b390a5a
[INFO] running `"docker" "start" "-a" "6bf93fe8fdd04ce6110ba04eac597050440795335e7bb8bc6f6c142d6b390a5a"`
[INFO] [stderr]     Checking pv v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Stdio`
[INFO] [stderr]  --> src/main.rs:8:28
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::process::{Command,Stdio,exit};
[INFO] [stderr]   |                            ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `fs`
[INFO] [stderr]   --> src/main.rs:10:31
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::{thread,time,cmp,env,fs};
[INFO] [stderr]    |                               ^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Stdio`
[INFO] [stderr]  --> src/main.rs:8:28
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::process::{Command,Stdio,exit};
[INFO] [stderr]   |                            ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `fs`
[INFO] [stderr]   --> src/main.rs:10:31
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::{thread,time,cmp,env,fs};
[INFO] [stderr]    |                               ^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/main.rs:68:48
[INFO] [stderr]    |
[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>>) {
[INFO] [stderr]    |                                                ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/main.rs:76:51
[INFO] [stderr]    |
[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>>) {
[INFO] [stderr]    |                                                   ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prog`
[INFO] [stderr]   --> src/main.rs:88:6
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let prog = args[0].clone();
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_prog`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/main.rs:68:48
[INFO] [stderr]    |
[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>>) {
[INFO] [stderr]    |                                                ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]   --> src/main.rs:76:51
[INFO] [stderr]    |
[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>>) {
[INFO] [stderr]    |                                                   ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prog`
[INFO] [stderr]   --> src/main.rs:88:6
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let prog = args[0].clone();
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_prog`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:142:7
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let mut file = File::open(filename).unwrap();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:149:7
[INFO] [stderr]     |
[INFO] [stderr] 149 |         let mut file = io::stdin();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:36:2
[INFO] [stderr]    |
[INFO] [stderr] 36 |     io::stderr().write(sequence.as_slice());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:37:2
[INFO] [stderr]    |
[INFO] [stderr] 37 |     io::stderr().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:43:2
[INFO] [stderr]    |
[INFO] [stderr] 43 |     io::stderr().write(sequence.as_slice());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:44:2
[INFO] [stderr]    |
[INFO] [stderr] 44 |     io::stderr().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:161:2
[INFO] [stderr]     |
[INFO] [stderr] 161 |     write!(io::stderr(), "\n{} {}.\n", *bytes_read.lock().unwrap(), unit);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[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)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:142:7
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let mut file = File::open(filename).unwrap();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:149:7
[INFO] [stderr]     |
[INFO] [stderr] 149 |         let mut file = io::stdin();
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:36:2
[INFO] [stderr]    |
[INFO] [stderr] 36 |     io::stderr().write(sequence.as_slice());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:37:2
[INFO] [stderr]    |
[INFO] [stderr] 37 |     io::stderr().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:43:2
[INFO] [stderr]    |
[INFO] [stderr] 43 |     io::stderr().write(sequence.as_slice());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:44:2
[INFO] [stderr]    |
[INFO] [stderr] 44 |     io::stderr().flush();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:161:2
[INFO] [stderr]     |
[INFO] [stderr] 161 |     write!(io::stderr(), "\n{} {}.\n", *bytes_read.lock().unwrap(), unit);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[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)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "6bf93fe8fdd04ce6110ba04eac597050440795335e7bb8bc6f6c142d6b390a5a"`
[INFO] running `"docker" "rm" "-f" "6bf93fe8fdd04ce6110ba04eac597050440795335e7bb8bc6f6c142d6b390a5a"`
[INFO] [stdout] 6bf93fe8fdd04ce6110ba04eac597050440795335e7bb8bc6f6c142d6b390a5a