[INFO] updating cached repository julian-goldsmith/huffman-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/julian-goldsmith/huffman-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/julian-goldsmith/huffman-rust" "work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/julian-goldsmith/huffman-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/julian-goldsmith/huffman-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/julian-goldsmith/huffman-rust" "work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/julian-goldsmith/huffman-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/julian-goldsmith/huffman-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 00bbdcbbf28f2644feb89eaf59f88b5f716ee33b
[INFO] sha for GitHub repo julian-goldsmith/huffman-rust: 00bbdcbbf28f2644feb89eaf59f88b5f716ee33b
[INFO] validating manifest of julian-goldsmith/huffman-rust on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of julian-goldsmith/huffman-rust on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing julian-goldsmith/huffman-rust
[INFO] finished frobbing julian-goldsmith/huffman-rust
[INFO] frobbed toml for julian-goldsmith/huffman-rust written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/julian-goldsmith/huffman-rust/Cargo.toml
[INFO] started frobbing julian-goldsmith/huffman-rust
[INFO] finished frobbing julian-goldsmith/huffman-rust
[INFO] frobbed toml for julian-goldsmith/huffman-rust written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/gh/julian-goldsmith/huffman-rust/Cargo.toml
[INFO] crate julian-goldsmith/huffman-rust has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking julian-goldsmith/huffman-rust against master#f66e4697ae286985ddefc53c3a047614568458bb for pr-58592
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58592/worker-4/master#f66e4697ae286985ddefc53c3a047614568458bb:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/gh/julian-goldsmith/huffman-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7f6c27f3a0b0fc47af2540af35c6eaa9086d5d425656435a99d53f7080c63744
[INFO] running `"docker" "start" "-a" "7f6c27f3a0b0fc47af2540af35c6eaa9086d5d425656435a99d53f7080c63744"`
[INFO] [stderr]     Checking huffman-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `ReadBytesExt`, `WriteBytesExt`
[INFO] [stderr]  --> src/huffman/mod.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 | use byteorder::{ReadBytesExt, WriteBytesExt};
[INFO] [stderr]   |                 ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/rle.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::iter;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ReadBytesExt`, `WriteBytesExt`
[INFO] [stderr]  --> src/huffman/mod.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 | use byteorder::{ReadBytesExt, WriteBytesExt};
[INFO] [stderr]   |                 ^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]  --> src/rle.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::iter;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/bitstream.rs:108:17
[INFO] [stderr]     |
[INFO] [stderr] 108 |             Err(err) => return Ok(None),        // FIXME: handle non-EOF
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/huffman/mod.rs:25:27
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn write_freqs(&self, mut writer: &mut Write) -> io::Result<usize> {
[INFO] [stderr]    |                           ----^^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/bitstream.rs:108:17
[INFO] [stderr]     |
[INFO] [stderr] 108 |             Err(err) => return Ok(None),        // FIXME: handle non-EOF
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/huffman/mod.rs:25:27
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn write_freqs(&self, mut writer: &mut Write) -> io::Result<usize> {
[INFO] [stderr]    |                           ----^^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "7f6c27f3a0b0fc47af2540af35c6eaa9086d5d425656435a99d53f7080c63744"`
[INFO] running `"docker" "rm" "-f" "7f6c27f3a0b0fc47af2540af35c6eaa9086d5d425656435a99d53f7080c63744"`
[INFO] [stdout] 7f6c27f3a0b0fc47af2540af35c6eaa9086d5d425656435a99d53f7080c63744