Dec 02 04:18:30.845 INFO documenting qcow2-0.1.2 against try#f86f76f89ea2b1ccbfb3741962ec2029d878a389 for pr-55318-1
Dec 02 04:18:30.846 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318-1/worker-4/try#f86f76f89ea2b1ccbfb3741962ec2029d878a389:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55318-1/try#f86f76f89ea2b1ccbfb3741962ec2029d878a389:/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 +f86f76f89ea2b1ccbfb3741962ec2029d878a389-alt doc --frozen --no-deps --document-private-items" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 04:18:31.068 INFO [stdout] dbf85ea2ef062e092d8c2fb7a203e78affda48a36e1663c1e06f099cdd28aeb4
Dec 02 04:18:31.078 INFO running `"docker" "start" "-a" "dbf85ea2ef062e092d8c2fb7a203e78affda48a36e1663c1e06f099cdd28aeb4"`
Dec 02 04:18:31.582 INFO [stderr] usermod: no changes
Dec 02 04:18:31.643 INFO [stderr]     Checking positioned-io v0.2.2
Dec 02 04:18:32.180 INFO [stderr]     Checking qcow2 v0.1.2 (/source)
Dec 02 04:18:32.180 INFO [stderr]  Documenting qcow2 v0.1.2 (/source)
Dec 02 04:18:32.646 INFO [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
Dec 02 04:18:32.646 INFO [stderr]  --> src/extension.rs:1:5
Dec 02 04:18:32.646 INFO [stderr]   |
Dec 02 04:18:32.646 INFO [stderr] 1 | use std::ascii::AsciiExt;
Dec 02 04:18:32.646 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 02 04:18:32.646 INFO [stderr]   |
Dec 02 04:18:32.646 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 02 04:18:32.646 INFO [stderr] 
Dec 02 04:18:32.862 INFO [stderr] warning: unused import: `std::ascii::AsciiExt`
Dec 02 04:18:32.863 INFO [stderr]  --> src/extension.rs:1:5
Dec 02 04:18:32.863 INFO [stderr]   |
Dec 02 04:18:32.863 INFO [stderr] 1 | use std::ascii::AsciiExt;
Dec 02 04:18:32.863 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 02 04:18:32.864 INFO [stderr]   |
Dec 02 04:18:32.864 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 02 04:18:32.864 INFO [stderr] 
Dec 02 04:18:32.865 INFO [stderr] warning: unused import: `byteorder::ReadBytesExt`
Dec 02 04:18:32.865 INFO [stderr]  --> src/extension.rs:7:5
Dec 02 04:18:32.865 INFO [stderr]   |
Dec 02 04:18:32.865 INFO [stderr] 7 | use byteorder::ReadBytesExt;
Dec 02 04:18:32.865 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 04:18:32.865 INFO [stderr] 
Dec 02 04:18:32.930 INFO [stderr] warning: variable does not need to be mutable
Dec 02 04:18:32.930 INFO [stderr]    --> src/header.rs:207:21
Dec 02 04:18:32.930 INFO [stderr]     |
Dec 02 04:18:32.930 INFO [stderr] 207 |                 let mut ext = self.v3.extension(ext_code);
Dec 02 04:18:32.930 INFO [stderr]     |                     ----^^^
Dec 02 04:18:32.930 INFO [stderr]     |                     |
Dec 02 04:18:32.930 INFO [stderr]     |                     help: remove this `mut`
Dec 02 04:18:32.930 INFO [stderr]     |
Dec 02 04:18:32.930 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 02 04:18:32.930 INFO [stderr] 
Dec 02 04:18:32.954 INFO [stderr] warning: variable does not need to be mutable
Dec 02 04:18:32.954 INFO [stderr]    --> src/read.rs:146:58
Dec 02 04:18:32.954 INFO [stderr]     |
Dec 02 04:18:32.954 INFO [stderr] 146 |     fn guest_read<T: ReadIntAt>(&self, l1: &T, pos: u64, mut buf: &mut [u8]) -> io::Result<usize> {
Dec 02 04:18:32.955 INFO [stderr]     |                                                          ----^^^
Dec 02 04:18:32.955 INFO [stderr]     |                                                          |
Dec 02 04:18:32.955 INFO [stderr]     |                                                          help: remove this `mut`
Dec 02 04:18:32.955 INFO [stderr] 
Dec 02 04:18:32.957 INFO [stderr] warning: variable does not need to be mutable
Dec 02 04:18:32.957 INFO [stderr]    --> src/read.rs:193:33
Dec 02 04:18:32.957 INFO [stderr]     |
Dec 02 04:18:32.957 INFO [stderr] 193 |     fn read_at(&self, pos: u64, mut buf: &mut [u8]) -> io::Result<usize> {
Dec 02 04:18:32.957 INFO [stderr]     |                                 ----^^^
Dec 02 04:18:32.957 INFO [stderr]     |                                 |
Dec 02 04:18:32.957 INFO [stderr]     |                                 help: remove this `mut`
Dec 02 04:18:32.957 INFO [stderr] 
Dec 02 04:18:35.276 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.67s
Dec 02 04:18:35.277 INFO [stderr] su: No module specific data is present
Dec 02 04:18:35.586 INFO running `"docker" "inspect" "dbf85ea2ef062e092d8c2fb7a203e78affda48a36e1663c1e06f099cdd28aeb4"`
Dec 02 04:18:35.668 INFO running `"docker" "rm" "-f" "dbf85ea2ef062e092d8c2fb7a203e78affda48a36e1663c1e06f099cdd28aeb4"`
Dec 02 04:18:35.778 INFO [stdout] dbf85ea2ef062e092d8c2fb7a203e78affda48a36e1663c1e06f099cdd28aeb4