Dec 12 13:17:05.437 INFO checking hematite-nbt-0.3.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 13:17:05.437 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 12 13:17:05.900 INFO [stdout] 52d93e2978fb74eab774c089d9608ff9efc1536a861e993a7fdaac5ad9eb68c6
Dec 12 13:17:05.904 INFO running `"docker" "start" "-a" "52d93e2978fb74eab774c089d9608ff9efc1536a861e993a7fdaac5ad9eb68c6"`
Dec 12 13:17:07.207 INFO [stderr] usermod: no changes
Dec 12 13:17:07.300 INFO [stderr]     Checking hematite-nbt v0.3.0 (/source)
Dec 12 13:17:08.926 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:08.926 INFO [stderr]   --> src/blob.rs:50:24
Dec 12 13:17:08.926 INFO [stderr]    |
Dec 12 13:17:08.926 INFO [stderr] 50 |     pub fn from_reader(mut src: &mut io::Read) -> Result<Blob> {
Dec 12 13:17:08.926 INFO [stderr]    |                        ----^^^
Dec 12 13:17:08.926 INFO [stderr]    |                        |
Dec 12 13:17:08.926 INFO [stderr]    |                        help: remove this `mut`
Dec 12 13:17:08.926 INFO [stderr]    |
Dec 12 13:17:08.932 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 13:17:08.932 INFO [stderr] 
Dec 12 13:17:08.979 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:08.979 INFO [stderr]   --> src/value.rs:88:32
Dec 12 13:17:08.979 INFO [stderr]    |
Dec 12 13:17:08.979 INFO [stderr] 88 |     pub fn write_header(&self, mut dst: &mut io::Write, title: &str) -> Result<()> {
Dec 12 13:17:08.979 INFO [stderr]    |                                ----^^^
Dec 12 13:17:08.979 INFO [stderr]    |                                |
Dec 12 13:17:08.979 INFO [stderr]    |                                help: remove this `mut`
Dec 12 13:17:08.979 INFO [stderr] 
Dec 12 13:17:08.988 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:08.988 INFO [stderr]   --> src/value.rs:96:25
Dec 12 13:17:08.988 INFO [stderr]    |
Dec 12 13:17:08.988 INFO [stderr] 96 |     pub fn write(&self, mut dst: &mut io::Write) -> Result<()> {
Dec 12 13:17:08.988 INFO [stderr]    |                         ----^^^
Dec 12 13:17:08.988 INFO [stderr]    |                         |
Dec 12 13:17:08.988 INFO [stderr]    |                         help: remove this `mut`
Dec 12 13:17:08.988 INFO [stderr] 
Dec 12 13:17:08.996 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:08.996 INFO [stderr]    --> src/value.rs:155:24
Dec 12 13:17:08.996 INFO [stderr]     |
Dec 12 13:17:08.996 INFO [stderr] 155 |     pub fn read_header(mut src: &mut io::Read) -> Result<(u8, String)> {
Dec 12 13:17:08.996 INFO [stderr]     |                        ----^^^
Dec 12 13:17:08.996 INFO [stderr]     |                        |
Dec 12 13:17:08.996 INFO [stderr]     |                        help: remove this `mut`
Dec 12 13:17:08.996 INFO [stderr] 
Dec 12 13:17:09.004 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:09.004 INFO [stderr]    --> src/value.rs:170:32
Dec 12 13:17:09.004 INFO [stderr]     |
Dec 12 13:17:09.004 INFO [stderr] 170 |     pub fn from_reader(id: u8, mut src: &mut io::Read) -> Result<Value> {
Dec 12 13:17:09.004 INFO [stderr]     |                                ----^^^
Dec 12 13:17:09.004 INFO [stderr]     |                                |
Dec 12 13:17:09.004 INFO [stderr]     |                                help: remove this `mut`
Dec 12 13:17:09.004 INFO [stderr] 
Dec 12 13:17:09.024 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:09.024 INFO [stderr]    --> src/value.rs:309:14
Dec 12 13:17:09.024 INFO [stderr]     |
Dec 12 13:17:09.024 INFO [stderr] 309 | fn read_utf8(mut src: &mut io::Read, len: usize) -> Result<String> {
Dec 12 13:17:09.024 INFO [stderr]     |              ----^^^
Dec 12 13:17:09.024 INFO [stderr]     |              |
Dec 12 13:17:09.024 INFO [stderr]     |              help: remove this `mut`
Dec 12 13:17:09.024 INFO [stderr] 
Dec 12 13:17:09.293 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:09.293 INFO [stderr]   --> src/blob.rs:50:24
Dec 12 13:17:09.293 INFO [stderr]    |
Dec 12 13:17:09.293 INFO [stderr] 50 |     pub fn from_reader(mut src: &mut io::Read) -> Result<Blob> {
Dec 12 13:17:09.293 INFO [stderr]    |                        ----^^^
Dec 12 13:17:09.293 INFO [stderr]    |                        |
Dec 12 13:17:09.293 INFO [stderr]    |                        help: remove this `mut`
Dec 12 13:17:09.293 INFO [stderr]    |
Dec 12 13:17:09.296 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 12 13:17:09.296 INFO [stderr] 
Dec 12 13:17:09.328 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:09.328 INFO [stderr]   --> src/value.rs:88:32
Dec 12 13:17:09.328 INFO [stderr]    |
Dec 12 13:17:09.328 INFO [stderr] 88 |     pub fn write_header(&self, mut dst: &mut io::Write, title: &str) -> Result<()> {
Dec 12 13:17:09.328 INFO [stderr]    |                                ----^^^
Dec 12 13:17:09.328 INFO [stderr]    |                                |
Dec 12 13:17:09.328 INFO [stderr]    |                                help: remove this `mut`
Dec 12 13:17:09.328 INFO [stderr] 
Dec 12 13:17:09.336 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:09.336 INFO [stderr]   --> src/value.rs:96:25
Dec 12 13:17:09.336 INFO [stderr]    |
Dec 12 13:17:09.336 INFO [stderr] 96 |     pub fn write(&self, mut dst: &mut io::Write) -> Result<()> {
Dec 12 13:17:09.336 INFO [stderr]    |                         ----^^^
Dec 12 13:17:09.336 INFO [stderr]    |                         |
Dec 12 13:17:09.336 INFO [stderr]    |                         help: remove this `mut`
Dec 12 13:17:09.336 INFO [stderr] 
Dec 12 13:17:09.336 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:09.336 INFO [stderr]    --> src/value.rs:155:24
Dec 12 13:17:09.336 INFO [stderr]     |
Dec 12 13:17:09.336 INFO [stderr] 155 |     pub fn read_header(mut src: &mut io::Read) -> Result<(u8, String)> {
Dec 12 13:17:09.336 INFO [stderr]     |                        ----^^^
Dec 12 13:17:09.336 INFO [stderr]     |                        |
Dec 12 13:17:09.336 INFO [stderr]     |                        help: remove this `mut`
Dec 12 13:17:09.336 INFO [stderr] 
Dec 12 13:17:09.340 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:09.340 INFO [stderr]    --> src/value.rs:170:32
Dec 12 13:17:09.340 INFO [stderr]     |
Dec 12 13:17:09.340 INFO [stderr] 170 |     pub fn from_reader(id: u8, mut src: &mut io::Read) -> Result<Value> {
Dec 12 13:17:09.340 INFO [stderr]     |                                ----^^^
Dec 12 13:17:09.340 INFO [stderr]     |                                |
Dec 12 13:17:09.340 INFO [stderr]     |                                help: remove this `mut`
Dec 12 13:17:09.340 INFO [stderr] 
Dec 12 13:17:09.353 INFO [stderr] warning: variable does not need to be mutable
Dec 12 13:17:09.353 INFO [stderr]    --> src/value.rs:309:14
Dec 12 13:17:09.353 INFO [stderr]     |
Dec 12 13:17:09.353 INFO [stderr] 309 | fn read_utf8(mut src: &mut io::Read, len: usize) -> Result<String> {
Dec 12 13:17:09.353 INFO [stderr]     |              ----^^^
Dec 12 13:17:09.353 INFO [stderr]     |              |
Dec 12 13:17:09.353 INFO [stderr]     |              help: remove this `mut`
Dec 12 13:17:09.353 INFO [stderr] 
Dec 12 13:17:09.444 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.21s
Dec 12 13:17:09.444 INFO [stderr] su: No module specific data is present
Dec 12 13:17:10.394 INFO running `"docker" "inspect" "52d93e2978fb74eab774c089d9608ff9efc1536a861e993a7fdaac5ad9eb68c6"`
Dec 12 13:17:10.682 INFO running `"docker" "rm" "-f" "52d93e2978fb74eab774c089d9608ff9efc1536a861e993a7fdaac5ad9eb68c6"`
Dec 12 13:17:11.044 INFO [stdout] 52d93e2978fb74eab774c089d9608ff9efc1536a861e993a7fdaac5ad9eb68c6