Dec 18 03:32:18.019 INFO checking bahusvel/dssc against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 03:32:18.019 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/bahusvel/dssc:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:32:18.266 INFO [stdout] 842751cef79df72711718106213ae1b033e6a4b76939b2ccf9bac7ae4302bfa6
Dec 18 03:32:18.268 INFO running `"docker" "start" "-a" "842751cef79df72711718106213ae1b033e6a4b76939b2ccf9bac7ae4302bfa6"`
Dec 18 03:32:19.248 INFO [stderr]    Compiling zstd-sys v1.4.2+zstd.1.3.3
Dec 18 03:32:53.312 INFO [stderr]     Checking zstd-safe v1.4.2+zstd.1.3.3
Dec 18 03:32:53.727 INFO [stderr]     Checking zstd v0.4.17+zstd.1.3.3
Dec 18 03:32:54.264 INFO [stderr]     Checking dssc v0.1.0 (/opt/crater/workdir)
Dec 18 03:32:54.660 INFO [stderr] warning: unused import: `self::fnv::FnvHashSet`
Dec 18 03:32:54.660 INFO [stderr]  --> src/chunkmap.rs:5:5
Dec 18 03:32:54.660 INFO [stderr]   |
Dec 18 03:32:54.660 INFO [stderr] 5 | use self::fnv::FnvHashSet;
Dec 18 03:32:54.660 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:54.660 INFO [stderr]   |
Dec 18 03:32:54.660 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 03:32:54.660 INFO [stderr] 
Dec 18 03:32:54.660 INFO [stderr] warning: unused import: `Hash`
Dec 18 03:32:54.660 INFO [stderr]   --> src/chunkmap.rs:12:17
Dec 18 03:32:54.660 INFO [stderr]    |
Dec 18 03:32:54.660 INFO [stderr] 12 | use std::hash::{Hash, Hasher};
Dec 18 03:32:54.660 INFO [stderr]    |                 ^^^^
Dec 18 03:32:54.660 INFO [stderr] 
Dec 18 03:32:54.668 INFO [stderr] warning: unused import: `self::fnv::FnvHashSet`
Dec 18 03:32:54.668 INFO [stderr]  --> src/chunkmap.rs:5:5
Dec 18 03:32:54.668 INFO [stderr]   |
Dec 18 03:32:54.668 INFO [stderr] 5 | use self::fnv::FnvHashSet;
Dec 18 03:32:54.668 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:54.668 INFO [stderr]   |
Dec 18 03:32:54.668 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 03:32:54.668 INFO [stderr] 
Dec 18 03:32:54.668 INFO [stderr] warning: unused import: `Hash`
Dec 18 03:32:54.668 INFO [stderr]   --> src/chunkmap.rs:12:17
Dec 18 03:32:54.668 INFO [stderr]    |
Dec 18 03:32:54.668 INFO [stderr] 12 | use std::hash::{Hash, Hasher};
Dec 18 03:32:54.668 INFO [stderr]    |                 ^^^^
Dec 18 03:32:54.668 INFO [stderr] 
Dec 18 03:32:55.028 INFO [stderr] warning: unused import: `Read`
Dec 18 03:32:55.028 INFO [stderr]   --> src/other.rs:10:33
Dec 18 03:32:55.028 INFO [stderr]    |
Dec 18 03:32:55.028 INFO [stderr] 10 | use std::io::{Error, ErrorKind, Read, Write};
Dec 18 03:32:55.029 INFO [stderr]    |                                 ^^^^
Dec 18 03:32:55.029 INFO [stderr] 
Dec 18 03:32:55.029 INFO [stderr] warning: unused import: `Hasher`
Dec 18 03:32:55.029 INFO [stderr]   --> src/chunkmap.rs:12:23
Dec 18 03:32:55.030 INFO [stderr]    |
Dec 18 03:32:55.030 INFO [stderr] 12 | use std::hash::{Hash, Hasher};
Dec 18 03:32:55.030 INFO [stderr]    |                       ^^^^^^
Dec 18 03:32:55.030 INFO [stderr] 
Dec 18 03:32:55.052 INFO [stderr] warning: unused import: `Read`
Dec 18 03:32:55.063 INFO [stderr]   --> src/other.rs:10:33
Dec 18 03:32:55.063 INFO [stderr]    |
Dec 18 03:32:55.063 INFO [stderr] 10 | use std::io::{Error, ErrorKind, Read, Write};
Dec 18 03:32:55.063 INFO [stderr]    |                                 ^^^^
Dec 18 03:32:55.063 INFO [stderr] 
Dec 18 03:32:55.063 INFO [stderr] warning: unused import: `Hasher`
Dec 18 03:32:55.063 INFO [stderr]   --> src/chunkmap.rs:12:23
Dec 18 03:32:55.063 INFO [stderr]    |
Dec 18 03:32:55.063 INFO [stderr] 12 | use std::hash::{Hash, Hasher};
Dec 18 03:32:55.063 INFO [stderr]    |                       ^^^^^^
Dec 18 03:32:55.063 INFO [stderr] 
Dec 18 03:32:55.228 INFO [stderr] warning: field is never used: `decoder`
Dec 18 03:32:55.228 INFO [stderr]   --> src/other.rs:78:5
Dec 18 03:32:55.228 INFO [stderr]    |
Dec 18 03:32:55.228 INFO [stderr] 78 |     decoder: DeflateDecoder<WriteProxy<Vec<u8>>>,
Dec 18 03:32:55.229 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.229 INFO [stderr]    |
Dec 18 03:32:55.229 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 03:32:55.229 INFO [stderr] 
Dec 18 03:32:55.229 INFO [stderr] warning: constant item is never used: `CHUNK_SIZE`
Dec 18 03:32:55.229 INFO [stderr]   --> src/chunkmap.rs:16:1
Dec 18 03:32:55.229 INFO [stderr]    |
Dec 18 03:32:55.229 INFO [stderr] 16 | const CHUNK_SIZE: usize = 4;
Dec 18 03:32:55.229 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.229 INFO [stderr] 
Dec 18 03:32:55.229 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 18 03:32:55.229 INFO [stderr]  --> src/lib.rs:2:12
Dec 18 03:32:55.229 INFO [stderr]   |
Dec 18 03:32:55.229 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 18 03:32:55.230 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.230 INFO [stderr]   |
Dec 18 03:32:55.230 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 03:32:55.230 INFO [stderr] 
Dec 18 03:32:55.230 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 18 03:32:55.230 INFO [stderr]  --> src/lib.rs:1:12
Dec 18 03:32:55.230 INFO [stderr]   |
Dec 18 03:32:55.230 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 18 03:32:55.231 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 18 03:32:55.231 INFO [stderr] 
Dec 18 03:32:55.240 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:32:55.240 INFO [stderr]   --> src/other.rs:93:9
Dec 18 03:32:55.240 INFO [stderr]    |
Dec 18 03:32:55.240 INFO [stderr] 93 |         self.encoder.write(&in_buf);
Dec 18 03:32:55.240 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.240 INFO [stderr]    |
Dec 18 03:32:55.240 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:32:55.240 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:32:55.240 INFO [stderr] 
Dec 18 03:32:55.241 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:32:55.241 INFO [stderr]   --> src/other.rs:94:9
Dec 18 03:32:55.241 INFO [stderr]    |
Dec 18 03:32:55.241 INFO [stderr] 94 |         self.encoder.flush();
Dec 18 03:32:55.241 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.241 INFO [stderr]    |
Dec 18 03:32:55.241 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:32:55.241 INFO [stderr] 
Dec 18 03:32:55.241 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:32:55.241 INFO [stderr]   --> src/other.rs:99:9
Dec 18 03:32:55.241 INFO [stderr]    |
Dec 18 03:32:55.241 INFO [stderr] 99 |         self.encoder.write(&in_buf);
Dec 18 03:32:55.241 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.241 INFO [stderr]    |
Dec 18 03:32:55.241 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:32:55.241 INFO [stderr] 
Dec 18 03:32:55.241 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:32:55.241 INFO [stderr]    --> src/other.rs:100:9
Dec 18 03:32:55.241 INFO [stderr]     |
Dec 18 03:32:55.241 INFO [stderr] 100 |         self.encoder.flush();
Dec 18 03:32:55.241 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.241 INFO [stderr]     |
Dec 18 03:32:55.241 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:32:55.241 INFO [stderr] 
Dec 18 03:32:55.289 INFO [stderr] warning: field is never used: `decoder`
Dec 18 03:32:55.289 INFO [stderr]   --> src/other.rs:78:5
Dec 18 03:32:55.289 INFO [stderr]    |
Dec 18 03:32:55.289 INFO [stderr] 78 |     decoder: DeflateDecoder<WriteProxy<Vec<u8>>>,
Dec 18 03:32:55.289 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.289 INFO [stderr]    |
Dec 18 03:32:55.289 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 03:32:55.289 INFO [stderr] 
Dec 18 03:32:55.289 INFO [stderr] warning: constant item is never used: `CHUNK_SIZE`
Dec 18 03:32:55.289 INFO [stderr]   --> src/chunkmap.rs:16:1
Dec 18 03:32:55.289 INFO [stderr]    |
Dec 18 03:32:55.289 INFO [stderr] 16 | const CHUNK_SIZE: usize = 4;
Dec 18 03:32:55.289 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.289 INFO [stderr] 
Dec 18 03:32:55.289 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 18 03:32:55.290 INFO [stderr]  --> src/lib.rs:2:12
Dec 18 03:32:55.290 INFO [stderr]   |
Dec 18 03:32:55.290 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 18 03:32:55.290 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.290 INFO [stderr]   |
Dec 18 03:32:55.290 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 03:32:55.290 INFO [stderr] 
Dec 18 03:32:55.290 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 18 03:32:55.290 INFO [stderr]  --> src/lib.rs:1:12
Dec 18 03:32:55.290 INFO [stderr]   |
Dec 18 03:32:55.290 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 18 03:32:55.290 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 18 03:32:55.290 INFO [stderr] 
Dec 18 03:32:55.292 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:32:55.292 INFO [stderr]   --> src/other.rs:93:9
Dec 18 03:32:55.292 INFO [stderr]    |
Dec 18 03:32:55.292 INFO [stderr] 93 |         self.encoder.write(&in_buf);
Dec 18 03:32:55.292 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.292 INFO [stderr]    |
Dec 18 03:32:55.292 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 03:32:55.292 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:32:55.292 INFO [stderr] 
Dec 18 03:32:55.292 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:32:55.292 INFO [stderr]   --> src/other.rs:94:9
Dec 18 03:32:55.292 INFO [stderr]    |
Dec 18 03:32:55.292 INFO [stderr] 94 |         self.encoder.flush();
Dec 18 03:32:55.292 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.292 INFO [stderr]    |
Dec 18 03:32:55.292 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:32:55.293 INFO [stderr] 
Dec 18 03:32:55.293 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:32:55.293 INFO [stderr]   --> src/other.rs:99:9
Dec 18 03:32:55.293 INFO [stderr]    |
Dec 18 03:32:55.293 INFO [stderr] 99 |         self.encoder.write(&in_buf);
Dec 18 03:32:55.293 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.293 INFO [stderr]    |
Dec 18 03:32:55.293 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:32:55.293 INFO [stderr] 
Dec 18 03:32:55.293 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 03:32:55.293 INFO [stderr]    --> src/other.rs:100:9
Dec 18 03:32:55.293 INFO [stderr]     |
Dec 18 03:32:55.293 INFO [stderr] 100 |         self.encoder.flush();
Dec 18 03:32:55.293 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 18 03:32:55.293 INFO [stderr]     |
Dec 18 03:32:55.293 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 03:32:55.293 INFO [stderr] 
Dec 18 03:32:56.344 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.21s
Dec 18 03:32:56.875 INFO running `"docker" "inspect" "842751cef79df72711718106213ae1b033e6a4b76939b2ccf9bac7ae4302bfa6"`
Dec 18 03:32:57.066 INFO running `"docker" "rm" "-f" "842751cef79df72711718106213ae1b033e6a4b76939b2ccf9bac7ae4302bfa6"`
Dec 18 03:32:57.348 INFO [stdout] 842751cef79df72711718106213ae1b033e6a4b76939b2ccf9bac7ae4302bfa6