Nov 01 23:13:57.245 INFO checking fast_io-1.2.2 against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 23:13:57.246 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-7/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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"`
Nov 01 23:13:57.772 INFO blam! 8c9b881e797e3b085d4661ae47f5dcbdd1649ced6d62974a505ad7d2c36feda0
Nov 01 23:13:57.775 INFO running `"docker" "start" "-a" "8c9b881e797e3b085d4661ae47f5dcbdd1649ced6d62974a505ad7d2c36feda0"`
Nov 01 23:13:58.545 INFO kablam! usermod: no changes
Nov 01 23:13:58.593 INFO kablam!     Checking fast_io v1.2.2 (/source)
Nov 01 23:13:59.592 INFO kablam! warning: variable does not need to be mutable
Nov 01 23:13:59.592 INFO kablam!   --> src/copy_io.rs:17:13
Nov 01 23:13:59.592 INFO kablam!    |
Nov 01 23:13:59.592 INFO kablam! 17 |         let mut buffer = unsafe {
Nov 01 23:13:59.592 INFO kablam!    |             ----^^^^^^
Nov 01 23:13:59.592 INFO kablam!    |             |
Nov 01 23:13:59.592 INFO kablam!    |             help: remove this `mut`
Nov 01 23:13:59.592 INFO kablam!    |
Nov 01 23:13:59.592 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 23:13:59.592 INFO kablam! 
Nov 01 23:13:59.592 INFO kablam! warning: variable does not need to be mutable
Nov 01 23:13:59.592 INFO kablam!   --> src/copy_io.rs:38:17
Nov 01 23:13:59.592 INFO kablam!    |
Nov 01 23:13:59.592 INFO kablam! 38 |             let mut buffer = slice::from_raw_parts_mut(
Nov 01 23:13:59.592 INFO kablam!    |                 ----^^^^^^
Nov 01 23:13:59.592 INFO kablam!    |                 |
Nov 01 23:13:59.592 INFO kablam!    |                 help: remove this `mut`
Nov 01 23:13:59.592 INFO kablam! 
Nov 01 23:13:59.776 INFO kablam! warning: variable does not need to be mutable
Nov 01 23:13:59.776 INFO kablam!   --> src/copy_io.rs:17:13
Nov 01 23:13:59.776 INFO kablam!    |
Nov 01 23:13:59.776 INFO kablam! 17 |         let mut buffer = unsafe {
Nov 01 23:13:59.776 INFO kablam!    |             ----^^^^^^
Nov 01 23:13:59.776 INFO kablam!    |             |
Nov 01 23:13:59.776 INFO kablam!    |             help: remove this `mut`
Nov 01 23:13:59.776 INFO kablam!    |
Nov 01 23:13:59.776 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 01 23:13:59.776 INFO kablam! 
Nov 01 23:13:59.784 INFO kablam! warning: variable does not need to be mutable
Nov 01 23:13:59.784 INFO kablam!   --> src/copy_io.rs:38:17
Nov 01 23:13:59.784 INFO kablam!    |
Nov 01 23:13:59.784 INFO kablam! 38 |             let mut buffer = slice::from_raw_parts_mut(
Nov 01 23:13:59.784 INFO kablam!    |                 ----^^^^^^
Nov 01 23:13:59.784 INFO kablam!    |                 |
Nov 01 23:13:59.784 INFO kablam!    |                 help: remove this `mut`
Nov 01 23:13:59.784 INFO kablam! 
Nov 01 23:13:59.828 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
Nov 01 23:13:59.835 INFO kablam! su: No module specific data is present
Nov 01 23:14:00.591 INFO running `"docker" "rm" "-f" "8c9b881e797e3b085d4661ae47f5dcbdd1649ced6d62974a505ad7d2c36feda0"`
Nov 01 23:14:00.864 INFO blam! 8c9b881e797e3b085d4661ae47f5dcbdd1649ced6d62974a505ad7d2c36feda0