Dec 15 08:58:21.800 INFO testing hematite-nbt-0.3.0 against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 15 08:58:21.800 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 08:58:22.207 INFO [stdout] 5a5890f8795f90f5abb1bb05e244656ce1df82e099506489d8dd9696b93619f5
Dec 15 08:58:22.209 INFO running `"docker" "start" "-a" "5a5890f8795f90f5abb1bb05e244656ce1df82e099506489d8dd9696b93619f5"`
Dec 15 08:58:22.856 INFO [stderr] usermod: no changes
Dec 15 08:58:22.915 INFO [stderr]    Compiling hematite-nbt v0.3.0 (/source)
Dec 15 08:58:23.922 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.922 INFO [stderr]   --> src/blob.rs:50:24
Dec 15 08:58:23.922 INFO [stderr]    |
Dec 15 08:58:23.923 INFO [stderr] 50 |     pub fn from_reader(mut src: &mut io::Read) -> Result<Blob> {
Dec 15 08:58:23.923 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 08:58:23.923 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 15 08:58:23.923 INFO [stderr] 
Dec 15 08:58:23.951 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.951 INFO [stderr]   --> src/value.rs:88:32
Dec 15 08:58:23.951 INFO [stderr]    |
Dec 15 08:58:23.951 INFO [stderr] 88 |     pub fn write_header(&self, mut dst: &mut io::Write, title: &str) -> Result<()> {
Dec 15 08:58:23.951 INFO [stderr]    |                                ----^^^
Dec 15 08:58:23.951 INFO [stderr]    |                                |
Dec 15 08:58:23.951 INFO [stderr]    |                                help: remove this `mut`
Dec 15 08:58:23.952 INFO [stderr] 
Dec 15 08:58:23.960 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.960 INFO [stderr]   --> src/value.rs:96:25
Dec 15 08:58:23.961 INFO [stderr]    |
Dec 15 08:58:23.961 INFO [stderr] 96 |     pub fn write(&self, mut dst: &mut io::Write) -> Result<()> {
Dec 15 08:58:23.961 INFO [stderr]    |                         ----^^^
Dec 15 08:58:23.961 INFO [stderr]    |                         |
Dec 15 08:58:23.961 INFO [stderr]    |                         help: remove this `mut`
Dec 15 08:58:23.961 INFO [stderr] 
Dec 15 08:58:23.963 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.963 INFO [stderr]    --> src/value.rs:155:24
Dec 15 08:58:23.963 INFO [stderr]     |
Dec 15 08:58:23.963 INFO [stderr] 155 |     pub fn read_header(mut src: &mut io::Read) -> Result<(u8, String)> {
Dec 15 08:58:23.963 INFO [stderr]     |                        ----^^^
Dec 15 08:58:23.963 INFO [stderr]     |                        |
Dec 15 08:58:23.963 INFO [stderr]     |                        help: remove this `mut`
Dec 15 08:58:23.963 INFO [stderr] 
Dec 15 08:58:23.969 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.969 INFO [stderr]    --> src/value.rs:170:32
Dec 15 08:58:23.969 INFO [stderr]     |
Dec 15 08:58:23.969 INFO [stderr] 170 |     pub fn from_reader(id: u8, mut src: &mut io::Read) -> Result<Value> {
Dec 15 08:58:23.969 INFO [stderr]     |                                ----^^^
Dec 15 08:58:23.969 INFO [stderr]     |                                |
Dec 15 08:58:23.969 INFO [stderr]     |                                help: remove this `mut`
Dec 15 08:58:23.969 INFO [stderr] 
Dec 15 08:58:23.985 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:23.985 INFO [stderr]    --> src/value.rs:309:14
Dec 15 08:58:23.985 INFO [stderr]     |
Dec 15 08:58:23.985 INFO [stderr] 309 | fn read_utf8(mut src: &mut io::Read, len: usize) -> Result<String> {
Dec 15 08:58:23.985 INFO [stderr]     |              ----^^^
Dec 15 08:58:23.985 INFO [stderr]     |              |
Dec 15 08:58:23.985 INFO [stderr]     |              help: remove this `mut`
Dec 15 08:58:23.985 INFO [stderr] 
Dec 15 08:58:25.484 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.60s
Dec 15 08:58:25.488 INFO [stderr] su: No module specific data is present
Dec 15 08:58:26.221 INFO running `"docker" "inspect" "5a5890f8795f90f5abb1bb05e244656ce1df82e099506489d8dd9696b93619f5"`
Dec 15 08:58:26.704 INFO running `"docker" "rm" "-f" "5a5890f8795f90f5abb1bb05e244656ce1df82e099506489d8dd9696b93619f5"`
Dec 15 08:58:27.045 INFO [stdout] 5a5890f8795f90f5abb1bb05e244656ce1df82e099506489d8dd9696b93619f5
Dec 15 08:58:27.051 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 08:58:27.563 INFO [stdout] 5e90b46aedd0eb9cfe67d4d01d316b4acc1ddd6be5ec0380af2a21d30563b037
Dec 15 08:58:27.568 INFO running `"docker" "start" "-a" "5e90b46aedd0eb9cfe67d4d01d316b4acc1ddd6be5ec0380af2a21d30563b037"`
Dec 15 08:58:28.709 INFO [stderr] usermod: no changes
Dec 15 08:58:28.759 INFO [stderr]    Compiling hematite-nbt v0.3.0 (/source)
Dec 15 08:58:29.944 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.944 INFO [stderr]   --> src/blob.rs:50:24
Dec 15 08:58:29.944 INFO [stderr]    |
Dec 15 08:58:29.944 INFO [stderr] 50 |     pub fn from_reader(mut src: &mut io::Read) -> Result<Blob> {
Dec 15 08:58:29.944 INFO [stderr]    |                        ----^^^
Dec 15 08:58:29.944 INFO [stderr]    |                        |
Dec 15 08:58:29.945 INFO [stderr]    |                        help: remove this `mut`
Dec 15 08:58:29.945 INFO [stderr]    |
Dec 15 08:58:29.945 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 15 08:58:29.945 INFO [stderr] 
Dec 15 08:58:29.970 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.970 INFO [stderr]   --> src/value.rs:88:32
Dec 15 08:58:29.971 INFO [stderr]    |
Dec 15 08:58:29.971 INFO [stderr] 88 |     pub fn write_header(&self, mut dst: &mut io::Write, title: &str) -> Result<()> {
Dec 15 08:58:29.971 INFO [stderr]    |                                ----^^^
Dec 15 08:58:29.971 INFO [stderr]    |                                |
Dec 15 08:58:29.971 INFO [stderr]    |                                help: remove this `mut`
Dec 15 08:58:29.971 INFO [stderr] 
Dec 15 08:58:29.979 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.979 INFO [stderr]   --> src/value.rs:96:25
Dec 15 08:58:29.979 INFO [stderr]    |
Dec 15 08:58:29.979 INFO [stderr] 96 |     pub fn write(&self, mut dst: &mut io::Write) -> Result<()> {
Dec 15 08:58:29.979 INFO [stderr]    |                         ----^^^
Dec 15 08:58:29.979 INFO [stderr]    |                         |
Dec 15 08:58:29.979 INFO [stderr]    |                         help: remove this `mut`
Dec 15 08:58:29.979 INFO [stderr] 
Dec 15 08:58:29.980 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.980 INFO [stderr]    --> src/value.rs:155:24
Dec 15 08:58:29.980 INFO [stderr]     |
Dec 15 08:58:29.980 INFO [stderr] 155 |     pub fn read_header(mut src: &mut io::Read) -> Result<(u8, String)> {
Dec 15 08:58:29.980 INFO [stderr]     |                        ----^^^
Dec 15 08:58:29.980 INFO [stderr]     |                        |
Dec 15 08:58:29.980 INFO [stderr]     |                        help: remove this `mut`
Dec 15 08:58:29.980 INFO [stderr] 
Dec 15 08:58:29.985 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.985 INFO [stderr]    --> src/value.rs:170:32
Dec 15 08:58:29.985 INFO [stderr]     |
Dec 15 08:58:29.985 INFO [stderr] 170 |     pub fn from_reader(id: u8, mut src: &mut io::Read) -> Result<Value> {
Dec 15 08:58:29.985 INFO [stderr]     |                                ----^^^
Dec 15 08:58:29.985 INFO [stderr]     |                                |
Dec 15 08:58:29.985 INFO [stderr]     |                                help: remove this `mut`
Dec 15 08:58:29.985 INFO [stderr] 
Dec 15 08:58:29.999 INFO [stderr] warning: variable does not need to be mutable
Dec 15 08:58:29.999 INFO [stderr]    --> src/value.rs:309:14
Dec 15 08:58:29.999 INFO [stderr]     |
Dec 15 08:58:29.999 INFO [stderr] 309 | fn read_utf8(mut src: &mut io::Read, len: usize) -> Result<String> {
Dec 15 08:58:29.999 INFO [stderr]     |              ----^^^
Dec 15 08:58:29.999 INFO [stderr]     |              |
Dec 15 08:58:29.999 INFO [stderr]     |              help: remove this `mut`
Dec 15 08:58:29.999 INFO [stderr] 
Dec 15 08:58:31.470 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.74s
Dec 15 08:58:31.471 INFO [stderr] su: No module specific data is present
Dec 15 08:58:31.784 INFO running `"docker" "inspect" "5e90b46aedd0eb9cfe67d4d01d316b4acc1ddd6be5ec0380af2a21d30563b037"`
Dec 15 08:58:31.852 INFO running `"docker" "rm" "-f" "5e90b46aedd0eb9cfe67d4d01d316b4acc1ddd6be5ec0380af2a21d30563b037"`
Dec 15 08:58:31.955 INFO [stdout] 5e90b46aedd0eb9cfe67d4d01d316b4acc1ddd6be5ec0380af2a21d30563b037
Dec 15 08:58:31.960 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-2/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/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 +bd47d6825bf4090517549d33cfef10d3300b4a75-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 08:58:32.224 INFO [stdout] c0fe12a90ae364c2e14a8fa9640758fd3676bfcde1d4bcc769f7153705620a18
Dec 15 08:58:32.225 INFO running `"docker" "start" "-a" "c0fe12a90ae364c2e14a8fa9640758fd3676bfcde1d4bcc769f7153705620a18"`
Dec 15 08:58:32.613 INFO [stderr] usermod: no changes
Dec 15 08:58:32.642 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 15 08:58:32.654 INFO [stderr]      Running /target/debug/deps/nbt-c846b016d1f68898
Dec 15 08:58:32.662 INFO [stdout] 
Dec 15 08:58:32.662 INFO [stdout] running 12 tests
Dec 15 08:58:32.667 INFO [stdout] test tests::nbt_bad_compression ... ok
Dec 15 08:58:32.667 INFO [stdout] test tests::nbt_nested_compound ... ok
Dec 15 08:58:32.667 INFO [stdout] test tests::nbt_bigtest ... ok
Dec 15 08:58:32.667 INFO [stdout] test tests::nbt_no_root ... ok
Dec 15 08:58:32.667 INFO [stdout] test tests::nbt_nonempty ... ok
Dec 15 08:58:32.667 INFO [stdout] test tests::nbt_no_end_tag ... ok
Dec 15 08:58:32.667 INFO [stdout] test tests::serialize_basic_types ... ok
Dec 15 08:58:32.671 INFO [stdout] test tests::nbt_compression ... ok
Dec 15 08:58:32.671 INFO [stdout] test tests::nbt_empty_list ... ok
Dec 15 08:58:32.671 INFO [stdout] test tests::nbt_invalid_list ... ok
Dec 15 08:58:32.671 INFO [stdout] test tests::nbt_empty_nbtfile ... ok
Dec 15 08:58:32.671 INFO [stdout] test tests::nbt_invalid_id ... ok
Dec 15 08:58:32.671 INFO [stdout] 
Dec 15 08:58:32.671 INFO [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 15 08:58:32.671 INFO [stdout] 
Dec 15 08:58:32.675 INFO [stderr]    Doc-tests nbt
Dec 15 08:58:33.995 INFO [stdout] 
Dec 15 08:58:33.995 INFO [stdout] running 3 tests
Dec 15 08:58:33.995 INFO [stdout] test src/serialize/mod.rs - serialize::NbtFmt (line 30) ... ignored
Dec 15 08:58:36.523 INFO [stdout] test src/serialize/mod.rs - serialize::NbtFmt (line 59) ... ok
Dec 15 08:58:36.821 INFO [stdout] test src/blob.rs - blob::Blob (line 23) ... ok
Dec 15 08:58:36.821 INFO [stdout] 
Dec 15 08:58:36.821 INFO [stdout] test result: ok. 2 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
Dec 15 08:58:36.821 INFO [stdout] 
Dec 15 08:58:36.835 INFO [stderr] su: No module specific data is present
Dec 15 08:58:37.607 INFO running `"docker" "inspect" "c0fe12a90ae364c2e14a8fa9640758fd3676bfcde1d4bcc769f7153705620a18"`
Dec 15 08:58:37.819 INFO running `"docker" "rm" "-f" "c0fe12a90ae364c2e14a8fa9640758fd3676bfcde1d4bcc769f7153705620a18"`
Dec 15 08:58:38.099 INFO [stdout] c0fe12a90ae364c2e14a8fa9640758fd3676bfcde1d4bcc769f7153705620a18