Dec 15 08:58:21.733 INFO testing hematite-nbt-0.3.0 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 15 08:58:21.733 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-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 15 08:58:22.167 INFO [stdout] e09f5e385ace2851a07d873c0df06e5568a0664aff7c24ec40aafef797c7851f
Dec 15 08:58:22.169 INFO running `"docker" "start" "-a" "e09f5e385ace2851a07d873c0df06e5568a0664aff7c24ec40aafef797c7851f"`
Dec 15 08:58:22.787 INFO [stderr] usermod: no changes
Dec 15 08:58:22.831 INFO [stderr]    Compiling hematite-nbt v0.3.0 (/source)
Dec 15 08:58:23.851 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.851 INFO [stderr]   --> src/blob.rs:50:24
Dec 15 08:58:23.852 INFO [stderr]    |
Dec 15 08:58:23.852 INFO [stderr] 50 |     pub fn from_reader(mut src: &mut io::Read) -> Result<Blob> {
Dec 15 08:58:23.852 INFO [stderr]    |                        ----^^^
Dec 15 08:58:23.853 INFO [stderr]    |                        |
Dec 15 08:58:23.853 INFO [stderr]    |                        help: remove this `mut`
Dec 15 08:58:23.853 INFO [stderr]    |
Dec 15 08:58:23.854 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 15 08:58:23.854 INFO [stderr] 
Dec 15 08:58:23.879 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.879 INFO [stderr]   --> src/value.rs:88:32
Dec 15 08:58:23.879 INFO [stderr]    |
Dec 15 08:58:23.879 INFO [stderr] 88 |     pub fn write_header(&self, mut dst: &mut io::Write, title: &str) -> Result<()> {
Dec 15 08:58:23.880 INFO [stderr]    |                                ----^^^
Dec 15 08:58:23.880 INFO [stderr]    |                                |
Dec 15 08:58:23.880 INFO [stderr]    |                                help: remove this `mut`
Dec 15 08:58:23.881 INFO [stderr] 
Dec 15 08:58:23.890 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.890 INFO [stderr]   --> src/value.rs:96:25
Dec 15 08:58:23.890 INFO [stderr]    |
Dec 15 08:58:23.891 INFO [stderr] 96 |     pub fn write(&self, mut dst: &mut io::Write) -> Result<()> {
Dec 15 08:58:23.891 INFO [stderr]    |                         ----^^^
Dec 15 08:58:23.891 INFO [stderr]    |                         |
Dec 15 08:58:23.892 INFO [stderr]    |                         help: remove this `mut`
Dec 15 08:58:23.892 INFO [stderr] 
Dec 15 08:58:23.894 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.894 INFO [stderr]    --> src/value.rs:155:24
Dec 15 08:58:23.895 INFO [stderr]     |
Dec 15 08:58:23.895 INFO [stderr] 155 |     pub fn read_header(mut src: &mut io::Read) -> Result<(u8, String)> {
Dec 15 08:58:23.895 INFO [stderr]     |                        ----^^^
Dec 15 08:58:23.895 INFO [stderr]     |                        |
Dec 15 08:58:23.896 INFO [stderr]     |                        help: remove this `mut`
Dec 15 08:58:23.896 INFO [stderr] 
Dec 15 08:58:23.903 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.903 INFO [stderr]    --> src/value.rs:170:32
Dec 15 08:58:23.903 INFO [stderr]     |
Dec 15 08:58:23.904 INFO [stderr] 170 |     pub fn from_reader(id: u8, mut src: &mut io::Read) -> Result<Value> {
Dec 15 08:58:23.904 INFO [stderr]     |                                ----^^^
Dec 15 08:58:23.904 INFO [stderr]     |                                |
Dec 15 08:58:23.905 INFO [stderr]     |                                help: remove this `mut`
Dec 15 08:58:23.905 INFO [stderr] 
Dec 15 08:58:23.921 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.921 INFO [stderr]    --> src/value.rs:309:14
Dec 15 08:58:23.921 INFO [stderr]     |
Dec 15 08:58:23.922 INFO [stderr] 309 | fn read_utf8(mut src: &mut io::Read, len: usize) -> Result<String> {
Dec 15 08:58:23.922 INFO [stderr]     |              ----^^^
Dec 15 08:58:23.923 INFO [stderr]     |              |
Dec 15 08:58:23.923 INFO [stderr]     |              help: remove this `mut`
Dec 15 08:58:23.923 INFO [stderr] 
Dec 15 08:58:25.405 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.60s
Dec 15 08:58:25.408 INFO [stderr] su: No module specific data is present
Dec 15 08:58:26.239 INFO running `"docker" "inspect" "e09f5e385ace2851a07d873c0df06e5568a0664aff7c24ec40aafef797c7851f"`
Dec 15 08:58:26.617 INFO running `"docker" "rm" "-f" "e09f5e385ace2851a07d873c0df06e5568a0664aff7c24ec40aafef797c7851f"`
Dec 15 08:58:26.899 INFO [stdout] e09f5e385ace2851a07d873c0df06e5568a0664aff7c24ec40aafef797c7851f
Dec 15 08:58:26.901 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-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 15 08:58:27.359 INFO [stdout] 2daf9d3b3a69cefac07abaa5f80dc0ab94a10ca34d4a1ca1fb6af78aedc9eea2
Dec 15 08:58:27.364 INFO running `"docker" "start" "-a" "2daf9d3b3a69cefac07abaa5f80dc0ab94a10ca34d4a1ca1fb6af78aedc9eea2"`
Dec 15 08:58:28.656 INFO [stderr] usermod: no changes
Dec 15 08:58:28.703 INFO [stderr]    Compiling hematite-nbt v0.3.0 (/source)
Dec 15 08:58:29.850 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.850 INFO [stderr]   --> src/blob.rs:50:24
Dec 15 08:58:29.850 INFO [stderr]    |
Dec 15 08:58:29.850 INFO [stderr] 50 |     pub fn from_reader(mut src: &mut io::Read) -> Result<Blob> {
Dec 15 08:58:29.850 INFO [stderr]    |                        ----^^^
Dec 15 08:58:29.850 INFO [stderr]    |                        |
Dec 15 08:58:29.850 INFO [stderr]    |                        help: remove this `mut`
Dec 15 08:58:29.850 INFO [stderr]    |
Dec 15 08:58:29.850 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 15 08:58:29.850 INFO [stderr] 
Dec 15 08:58:29.871 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.871 INFO [stderr]   --> src/value.rs:88:32
Dec 15 08:58:29.871 INFO [stderr]    |
Dec 15 08:58:29.871 INFO [stderr] 88 |     pub fn write_header(&self, mut dst: &mut io::Write, title: &str) -> Result<()> {
Dec 15 08:58:29.871 INFO [stderr]    |                                ----^^^
Dec 15 08:58:29.871 INFO [stderr]    |                                |
Dec 15 08:58:29.871 INFO [stderr]    |                                help: remove this `mut`
Dec 15 08:58:29.871 INFO [stderr] 
Dec 15 08:58:29.876 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.876 INFO [stderr]   --> src/value.rs:96:25
Dec 15 08:58:29.876 INFO [stderr]    |
Dec 15 08:58:29.876 INFO [stderr] 96 |     pub fn write(&self, mut dst: &mut io::Write) -> Result<()> {
Dec 15 08:58:29.876 INFO [stderr]    |                         ----^^^
Dec 15 08:58:29.876 INFO [stderr]    |                         |
Dec 15 08:58:29.876 INFO [stderr]    |                         help: remove this `mut`
Dec 15 08:58:29.876 INFO [stderr] 
Dec 15 08:58:29.877 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.877 INFO [stderr]    --> src/value.rs:155:24
Dec 15 08:58:29.877 INFO [stderr]     |
Dec 15 08:58:29.877 INFO [stderr] 155 |     pub fn read_header(mut src: &mut io::Read) -> Result<(u8, String)> {
Dec 15 08:58:29.877 INFO [stderr]     |                        ----^^^
Dec 15 08:58:29.877 INFO [stderr]     |                        |
Dec 15 08:58:29.877 INFO [stderr]     |                        help: remove this `mut`
Dec 15 08:58:29.877 INFO [stderr] 
Dec 15 08:58:29.881 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.881 INFO [stderr]    --> src/value.rs:170:32
Dec 15 08:58:29.881 INFO [stderr]     |
Dec 15 08:58:29.881 INFO [stderr] 170 |     pub fn from_reader(id: u8, mut src: &mut io::Read) -> Result<Value> {
Dec 15 08:58:29.881 INFO [stderr]     |                                ----^^^
Dec 15 08:58:29.881 INFO [stderr]     |                                |
Dec 15 08:58:29.881 INFO [stderr]     |                                help: remove this `mut`
Dec 15 08:58:29.881 INFO [stderr] 
Dec 15 08:58:29.891 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.891 INFO [stderr]    --> src/value.rs:309:14
Dec 15 08:58:29.891 INFO [stderr]     |
Dec 15 08:58:29.891 INFO [stderr] 309 | fn read_utf8(mut src: &mut io::Read, len: usize) -> Result<String> {
Dec 15 08:58:29.891 INFO [stderr]     |              ----^^^
Dec 15 08:58:29.891 INFO [stderr]     |              |
Dec 15 08:58:29.891 INFO [stderr]     |              help: remove this `mut`
Dec 15 08:58:29.891 INFO [stderr] 
Dec 15 08:58:31.271 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.59s
Dec 15 08:58:31.272 INFO [stderr] su: No module specific data is present
Dec 15 08:58:31.788 INFO running `"docker" "inspect" "2daf9d3b3a69cefac07abaa5f80dc0ab94a10ca34d4a1ca1fb6af78aedc9eea2"`
Dec 15 08:58:31.880 INFO running `"docker" "rm" "-f" "2daf9d3b3a69cefac07abaa5f80dc0ab94a10ca34d4a1ca1fb6af78aedc9eea2"`
Dec 15 08:58:31.982 INFO [stdout] 2daf9d3b3a69cefac07abaa5f80dc0ab94a10ca34d4a1ca1fb6af78aedc9eea2
Dec 15 08:58:31.984 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen" "-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 15 08:58:32.271 INFO [stdout] 99af25c8f918c6e5e309f6cbf6aec4c1f1f98dc37983a040656fd8bde9a98f18
Dec 15 08:58:32.274 INFO running `"docker" "start" "-a" "99af25c8f918c6e5e309f6cbf6aec4c1f1f98dc37983a040656fd8bde9a98f18"`
Dec 15 08:58:32.881 INFO [stderr] usermod: no changes
Dec 15 08:58:33.007 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
Dec 15 08:58:33.023 INFO [stderr]      Running /target/debug/deps/nbt-170714122b09fdc5
Dec 15 08:58:33.023 INFO [stdout] 
Dec 15 08:58:33.023 INFO [stdout] running 12 tests
Dec 15 08:58:33.034 INFO [stdout] test tests::nbt_empty_list ... ok
Dec 15 08:58:33.035 INFO [stdout] test tests::nbt_empty_nbtfile ... ok
Dec 15 08:58:33.035 INFO [stdout] test tests::nbt_bigtest ... ok
Dec 15 08:58:33.035 INFO [stdout] test tests::nbt_compression ... ok
Dec 15 08:58:33.035 INFO [stdout] test tests::nbt_bad_compression ... ok
Dec 15 08:58:33.035 INFO [stdout] test tests::nbt_nonempty ... ok
Dec 15 08:58:33.035 INFO [stdout] test tests::nbt_no_root ... ok
Dec 15 08:58:33.035 INFO [stdout] test tests::serialize_basic_types ... ok
Dec 15 08:58:33.035 INFO [stdout] test tests::nbt_no_end_tag ... ok
Dec 15 08:58:33.036 INFO [stdout] test tests::nbt_invalid_list ... ok
Dec 15 08:58:33.036 INFO [stdout] test tests::nbt_nested_compound ... ok
Dec 15 08:58:33.036 INFO [stdout] test tests::nbt_invalid_id ... ok
Dec 15 08:58:33.036 INFO [stdout] 
Dec 15 08:58:33.036 INFO [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 15 08:58:33.036 INFO [stdout] 
Dec 15 08:58:33.039 INFO [stderr]    Doc-tests nbt
Dec 15 08:58:34.367 INFO [stdout] 
Dec 15 08:58:34.367 INFO [stdout] running 3 tests
Dec 15 08:58:34.367 INFO [stdout] test src/serialize/mod.rs - serialize::NbtFmt (line 30) ... ignored
Dec 15 08:58:36.592 INFO [stdout] test src/serialize/mod.rs - serialize::NbtFmt (line 59) ... ok
Dec 15 08:58:37.441 INFO [stdout] test src/blob.rs - blob::Blob (line 23) ... ok
Dec 15 08:58:37.441 INFO [stdout] 
Dec 15 08:58:37.441 INFO [stdout] test result: ok. 2 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
Dec 15 08:58:37.441 INFO [stdout] 
Dec 15 08:58:37.453 INFO [stderr] su: No module specific data is present
Dec 15 08:58:38.103 INFO running `"docker" "inspect" "99af25c8f918c6e5e309f6cbf6aec4c1f1f98dc37983a040656fd8bde9a98f18"`
Dec 15 08:58:38.443 INFO running `"docker" "rm" "-f" "99af25c8f918c6e5e309f6cbf6aec4c1f1f98dc37983a040656fd8bde9a98f18"`
Dec 15 08:58:38.723 INFO [stdout] 99af25c8f918c6e5e309f6cbf6aec4c1f1f98dc37983a040656fd8bde9a98f18