Nov 30 21:16:11.338 INFO checking hematite-nbt-0.3.0 against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 21:16:11.338 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-7/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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 30 21:16:11.768 INFO [stdout] eb25a46267775297ef3a67a48a778eca9dbfc331f3c7d3fa0641ac6654ff36cd
Nov 30 21:16:11.776 INFO running `"docker" "start" "-a" "eb25a46267775297ef3a67a48a778eca9dbfc331f3c7d3fa0641ac6654ff36cd"`
Nov 30 21:16:13.052 INFO [stderr] usermod: no changes
Nov 30 21:16:13.132 INFO [stderr]     Checking hematite-nbt v0.3.0 (/source)
Nov 30 21:16:14.700 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:14.700 INFO [stderr]   --> src/blob.rs:50:24
Nov 30 21:16:14.700 INFO [stderr]    |
Nov 30 21:16:14.700 INFO [stderr] 50 |     pub fn from_reader(mut src: &mut io::Read) -> Result<Blob> {
Nov 30 21:16:14.700 INFO [stderr]    |                        ----^^^
Nov 30 21:16:14.700 INFO [stderr]    |                        |
Nov 30 21:16:14.700 INFO [stderr]    |                        help: remove this `mut`
Nov 30 21:16:14.700 INFO [stderr]    |
Nov 30 21:16:14.700 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 21:16:14.700 INFO [stderr] 
Nov 30 21:16:14.766 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:14.766 INFO [stderr]   --> src/value.rs:88:32
Nov 30 21:16:14.766 INFO [stderr]    |
Nov 30 21:16:14.766 INFO [stderr] 88 |     pub fn write_header(&self, mut dst: &mut io::Write, title: &str) -> Result<()> {
Nov 30 21:16:14.766 INFO [stderr]    |                                ----^^^
Nov 30 21:16:14.767 INFO [stderr]    |                                |
Nov 30 21:16:14.767 INFO [stderr]    |                                help: remove this `mut`
Nov 30 21:16:14.767 INFO [stderr] 
Nov 30 21:16:14.796 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:14.796 INFO [stderr]   --> src/value.rs:96:25
Nov 30 21:16:14.796 INFO [stderr]    |
Nov 30 21:16:14.796 INFO [stderr] 96 |     pub fn write(&self, mut dst: &mut io::Write) -> Result<()> {
Nov 30 21:16:14.796 INFO [stderr]    |                         ----^^^
Nov 30 21:16:14.796 INFO [stderr]    |                         |
Nov 30 21:16:14.796 INFO [stderr]    |                         help: remove this `mut`
Nov 30 21:16:14.796 INFO [stderr] 
Nov 30 21:16:14.808 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:14.808 INFO [stderr]    --> src/value.rs:155:24
Nov 30 21:16:14.808 INFO [stderr]     |
Nov 30 21:16:14.808 INFO [stderr] 155 |     pub fn read_header(mut src: &mut io::Read) -> Result<(u8, String)> {
Nov 30 21:16:14.808 INFO [stderr]     |                        ----^^^
Nov 30 21:16:14.808 INFO [stderr]     |                        |
Nov 30 21:16:14.808 INFO [stderr]     |                        help: remove this `mut`
Nov 30 21:16:14.808 INFO [stderr] 
Nov 30 21:16:14.820 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:14.820 INFO [stderr]    --> src/value.rs:170:32
Nov 30 21:16:14.820 INFO [stderr]     |
Nov 30 21:16:14.820 INFO [stderr] 170 |     pub fn from_reader(id: u8, mut src: &mut io::Read) -> Result<Value> {
Nov 30 21:16:14.820 INFO [stderr]     |                                ----^^^
Nov 30 21:16:14.820 INFO [stderr]     |                                |
Nov 30 21:16:14.820 INFO [stderr]     |                                help: remove this `mut`
Nov 30 21:16:14.820 INFO [stderr] 
Nov 30 21:16:14.876 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:14.876 INFO [stderr]    --> src/value.rs:309:14
Nov 30 21:16:14.876 INFO [stderr]     |
Nov 30 21:16:14.876 INFO [stderr] 309 | fn read_utf8(mut src: &mut io::Read, len: usize) -> Result<String> {
Nov 30 21:16:14.876 INFO [stderr]     |              ----^^^
Nov 30 21:16:14.876 INFO [stderr]     |              |
Nov 30 21:16:14.876 INFO [stderr]     |              help: remove this `mut`
Nov 30 21:16:14.876 INFO [stderr] 
Nov 30 21:16:15.276 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:15.276 INFO [stderr]   --> src/blob.rs:50:24
Nov 30 21:16:15.276 INFO [stderr]    |
Nov 30 21:16:15.276 INFO [stderr] 50 |     pub fn from_reader(mut src: &mut io::Read) -> Result<Blob> {
Nov 30 21:16:15.277 INFO [stderr]    |                        ----^^^
Nov 30 21:16:15.277 INFO [stderr]    |                        |
Nov 30 21:16:15.277 INFO [stderr]    |                        help: remove this `mut`
Nov 30 21:16:15.277 INFO [stderr]    |
Nov 30 21:16:15.277 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 21:16:15.277 INFO [stderr] 
Nov 30 21:16:15.298 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:15.298 INFO [stderr]   --> src/value.rs:88:32
Nov 30 21:16:15.298 INFO [stderr]    |
Nov 30 21:16:15.298 INFO [stderr] 88 |     pub fn write_header(&self, mut dst: &mut io::Write, title: &str) -> Result<()> {
Nov 30 21:16:15.298 INFO [stderr]    |                                ----^^^
Nov 30 21:16:15.298 INFO [stderr]    |                                |
Nov 30 21:16:15.298 INFO [stderr]    |                                help: remove this `mut`
Nov 30 21:16:15.298 INFO [stderr] 
Nov 30 21:16:15.310 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:15.310 INFO [stderr]   --> src/value.rs:96:25
Nov 30 21:16:15.310 INFO [stderr]    |
Nov 30 21:16:15.310 INFO [stderr] 96 |     pub fn write(&self, mut dst: &mut io::Write) -> Result<()> {
Nov 30 21:16:15.310 INFO [stderr]    |                         ----^^^
Nov 30 21:16:15.310 INFO [stderr]    |                         |
Nov 30 21:16:15.310 INFO [stderr]    |                         help: remove this `mut`
Nov 30 21:16:15.310 INFO [stderr] 
Nov 30 21:16:15.311 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:15.311 INFO [stderr]    --> src/value.rs:155:24
Nov 30 21:16:15.311 INFO [stderr]     |
Nov 30 21:16:15.312 INFO [stderr] 155 |     pub fn read_header(mut src: &mut io::Read) -> Result<(u8, String)> {
Nov 30 21:16:15.312 INFO [stderr]     |                        ----^^^
Nov 30 21:16:15.312 INFO [stderr]     |                        |
Nov 30 21:16:15.312 INFO [stderr]     |                        help: remove this `mut`
Nov 30 21:16:15.312 INFO [stderr] 
Nov 30 21:16:15.317 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:15.317 INFO [stderr]    --> src/value.rs:170:32
Nov 30 21:16:15.317 INFO [stderr]     |
Nov 30 21:16:15.317 INFO [stderr] 170 |     pub fn from_reader(id: u8, mut src: &mut io::Read) -> Result<Value> {
Nov 30 21:16:15.317 INFO [stderr]     |                                ----^^^
Nov 30 21:16:15.317 INFO [stderr]     |                                |
Nov 30 21:16:15.317 INFO [stderr]     |                                help: remove this `mut`
Nov 30 21:16:15.317 INFO [stderr] 
Nov 30 21:16:15.335 INFO [stderr] warning: variable does not need to be mutable
Nov 30 21:16:15.335 INFO [stderr]    --> src/value.rs:309:14
Nov 30 21:16:15.335 INFO [stderr]     |
Nov 30 21:16:15.335 INFO [stderr] 309 | fn read_utf8(mut src: &mut io::Read, len: usize) -> Result<String> {
Nov 30 21:16:15.335 INFO [stderr]     |              ----^^^
Nov 30 21:16:15.335 INFO [stderr]     |              |
Nov 30 21:16:15.335 INFO [stderr]     |              help: remove this `mut`
Nov 30 21:16:15.335 INFO [stderr] 
Nov 30 21:16:15.432 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.35s
Nov 30 21:16:15.435 INFO [stderr] su: No module specific data is present
Nov 30 21:16:16.812 INFO running `"docker" "inspect" "eb25a46267775297ef3a67a48a778eca9dbfc331f3c7d3fa0641ac6654ff36cd"`
Nov 30 21:16:17.102 INFO running `"docker" "rm" "-f" "eb25a46267775297ef3a67a48a778eca9dbfc331f3c7d3fa0641ac6654ff36cd"`
Nov 30 21:16:17.528 INFO [stdout] eb25a46267775297ef3a67a48a778eca9dbfc331f3c7d3fa0641ac6654ff36cd