Dec 05 08:42:04.594 INFO checking qcow2-0.1.2 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 08:42:04.594 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 08:42:04.808 INFO [stdout] bcf5007fd2bbc1fac9d61536e35bfbe5e007a33db2c6b142484680c1a6e8ed0f
Dec 05 08:42:04.813 INFO running `"docker" "start" "-a" "bcf5007fd2bbc1fac9d61536e35bfbe5e007a33db2c6b142484680c1a6e8ed0f"`
Dec 05 08:42:05.648 INFO [stderr] usermod: no changes
Dec 05 08:42:05.771 INFO [stderr]     Checking positioned-io v0.2.2
Dec 05 08:42:06.552 INFO [stderr]     Checking qcow2 v0.1.2 (/source)
Dec 05 08:42:07.199 INFO [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
Dec 05 08:42:07.199 INFO [stderr]  --> src/extension.rs:1:5
Dec 05 08:42:07.199 INFO [stderr]   |
Dec 05 08:42:07.199 INFO [stderr] 1 | use std::ascii::AsciiExt;
Dec 05 08:42:07.199 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 08:42:07.199 INFO [stderr]   |
Dec 05 08:42:07.199 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 05 08:42:07.199 INFO [stderr] 
Dec 05 08:42:07.368 INFO [stderr] warning: unused import: `std::ascii::AsciiExt`
Dec 05 08:42:07.368 INFO [stderr]  --> src/extension.rs:1:5
Dec 05 08:42:07.368 INFO [stderr]   |
Dec 05 08:42:07.368 INFO [stderr] 1 | use std::ascii::AsciiExt;
Dec 05 08:42:07.368 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 08:42:07.368 INFO [stderr]   |
Dec 05 08:42:07.368 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 08:42:07.368 INFO [stderr] 
Dec 05 08:42:07.368 INFO [stderr] warning: unused import: `byteorder::ReadBytesExt`
Dec 05 08:42:07.368 INFO [stderr]  --> src/extension.rs:7:5
Dec 05 08:42:07.368 INFO [stderr]   |
Dec 05 08:42:07.368 INFO [stderr] 7 | use byteorder::ReadBytesExt;
Dec 05 08:42:07.368 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:42:07.368 INFO [stderr] 
Dec 05 08:42:07.418 INFO [stderr] warning: variable does not need to be mutable
Dec 05 08:42:07.418 INFO [stderr]    --> src/header.rs:207:21
Dec 05 08:42:07.418 INFO [stderr]     |
Dec 05 08:42:07.418 INFO [stderr] 207 |                 let mut ext = self.v3.extension(ext_code);
Dec 05 08:42:07.418 INFO [stderr]     |                     ----^^^
Dec 05 08:42:07.418 INFO [stderr]     |                     |
Dec 05 08:42:07.418 INFO [stderr]     |                     help: remove this `mut`
Dec 05 08:42:07.418 INFO [stderr]     |
Dec 05 08:42:07.418 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 08:42:07.418 INFO [stderr] 
Dec 05 08:42:07.435 INFO [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
Dec 05 08:42:07.435 INFO [stderr]  --> src/extension.rs:1:5
Dec 05 08:42:07.435 INFO [stderr]   |
Dec 05 08:42:07.435 INFO [stderr] 1 | use std::ascii::AsciiExt;
Dec 05 08:42:07.435 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 08:42:07.435 INFO [stderr]   |
Dec 05 08:42:07.435 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 05 08:42:07.435 INFO [stderr] 
Dec 05 08:42:07.445 INFO [stderr] warning: variable does not need to be mutable
Dec 05 08:42:07.445 INFO [stderr]    --> src/read.rs:146:58
Dec 05 08:42:07.445 INFO [stderr]     |
Dec 05 08:42:07.445 INFO [stderr] 146 |     fn guest_read<T: ReadIntAt>(&self, l1: &T, pos: u64, mut buf: &mut [u8]) -> io::Result<usize> {
Dec 05 08:42:07.445 INFO [stderr]     |                                                          ----^^^
Dec 05 08:42:07.445 INFO [stderr]     |                                                          |
Dec 05 08:42:07.445 INFO [stderr]     |                                                          help: remove this `mut`
Dec 05 08:42:07.445 INFO [stderr] 
Dec 05 08:42:07.453 INFO [stderr] warning: variable does not need to be mutable
Dec 05 08:42:07.453 INFO [stderr]    --> src/read.rs:193:33
Dec 05 08:42:07.453 INFO [stderr]     |
Dec 05 08:42:07.453 INFO [stderr] 193 |     fn read_at(&self, pos: u64, mut buf: &mut [u8]) -> io::Result<usize> {
Dec 05 08:42:07.453 INFO [stderr]     |                                 ----^^^
Dec 05 08:42:07.453 INFO [stderr]     |                                 |
Dec 05 08:42:07.453 INFO [stderr]     |                                 help: remove this `mut`
Dec 05 08:42:07.453 INFO [stderr] 
Dec 05 08:42:07.639 INFO [stderr] warning: unused import: `std::ascii::AsciiExt`
Dec 05 08:42:07.639 INFO [stderr]  --> src/extension.rs:1:5
Dec 05 08:42:07.639 INFO [stderr]   |
Dec 05 08:42:07.639 INFO [stderr] 1 | use std::ascii::AsciiExt;
Dec 05 08:42:07.639 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 05 08:42:07.639 INFO [stderr]   |
Dec 05 08:42:07.639 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 08:42:07.639 INFO [stderr] 
Dec 05 08:42:07.639 INFO [stderr] warning: unused import: `byteorder::ReadBytesExt`
Dec 05 08:42:07.639 INFO [stderr]  --> src/extension.rs:7:5
Dec 05 08:42:07.639 INFO [stderr]   |
Dec 05 08:42:07.639 INFO [stderr] 7 | use byteorder::ReadBytesExt;
Dec 05 08:42:07.639 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 08:42:07.639 INFO [stderr] 
Dec 05 08:42:07.755 INFO [stderr] warning: variable does not need to be mutable
Dec 05 08:42:07.755 INFO [stderr]    --> src/header.rs:207:21
Dec 05 08:42:07.755 INFO [stderr]     |
Dec 05 08:42:07.755 INFO [stderr] 207 |                 let mut ext = self.v3.extension(ext_code);
Dec 05 08:42:07.755 INFO [stderr]     |                     ----^^^
Dec 05 08:42:07.755 INFO [stderr]     |                     |
Dec 05 08:42:07.755 INFO [stderr]     |                     help: remove this `mut`
Dec 05 08:42:07.755 INFO [stderr]     |
Dec 05 08:42:07.755 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 08:42:07.755 INFO [stderr] 
Dec 05 08:42:07.787 INFO [stderr] warning: variable does not need to be mutable
Dec 05 08:42:07.787 INFO [stderr]    --> src/read.rs:146:58
Dec 05 08:42:07.787 INFO [stderr]     |
Dec 05 08:42:07.787 INFO [stderr] 146 |     fn guest_read<T: ReadIntAt>(&self, l1: &T, pos: u64, mut buf: &mut [u8]) -> io::Result<usize> {
Dec 05 08:42:07.787 INFO [stderr]     |                                                          ----^^^
Dec 05 08:42:07.787 INFO [stderr]     |                                                          |
Dec 05 08:42:07.787 INFO [stderr]     |                                                          help: remove this `mut`
Dec 05 08:42:07.787 INFO [stderr] 
Dec 05 08:42:07.789 INFO [stderr] warning: variable does not need to be mutable
Dec 05 08:42:07.790 INFO [stderr]    --> src/read.rs:193:33
Dec 05 08:42:07.790 INFO [stderr]     |
Dec 05 08:42:07.790 INFO [stderr] 193 |     fn read_at(&self, pos: u64, mut buf: &mut [u8]) -> io::Result<usize> {
Dec 05 08:42:07.790 INFO [stderr]     |                                 ----^^^
Dec 05 08:42:07.790 INFO [stderr]     |                                 |
Dec 05 08:42:07.790 INFO [stderr]     |                                 help: remove this `mut`
Dec 05 08:42:07.790 INFO [stderr] 
Dec 05 08:42:08.491 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.80s
Dec 05 08:42:08.495 INFO [stderr] su: No module specific data is present
Dec 05 08:42:08.824 INFO running `"docker" "inspect" "bcf5007fd2bbc1fac9d61536e35bfbe5e007a33db2c6b142484680c1a6e8ed0f"`
Dec 05 08:42:08.901 INFO running `"docker" "rm" "-f" "bcf5007fd2bbc1fac9d61536e35bfbe5e007a33db2c6b142484680c1a6e8ed0f"`
Dec 05 08:42:09.023 INFO [stdout] bcf5007fd2bbc1fac9d61536e35bfbe5e007a33db2c6b142484680c1a6e8ed0f