Dec 19 20:03:43.110 INFO checking bahusvel/dssc against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 20:03:43.110 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:03:43.293 INFO [stdout] 20ebe20d6d4cf58a95c54fdb5197391792909fa790048c63c9b5003dd8f42626
Dec 19 20:03:43.298 INFO running `"docker" "start" "-a" "20ebe20d6d4cf58a95c54fdb5197391792909fa790048c63c9b5003dd8f42626"`
Dec 19 20:03:43.988 INFO [stderr]    Compiling zstd-sys v1.4.2+zstd.1.3.3
Dec 19 20:03:43.996 INFO [stderr]     Checking flate2 v1.0.1
Dec 19 20:04:19.679 INFO [stderr]     Checking zstd-safe v1.4.2+zstd.1.3.3
Dec 19 20:04:19.960 INFO [stderr]     Checking zstd v0.4.17+zstd.1.3.3
Dec 19 20:04:20.355 INFO [stderr]     Checking dssc v0.1.0 (/opt/crater/workdir)
Dec 19 20:04:20.657 INFO [stderr] warning: unused import: `self::fnv::FnvHashSet`
Dec 19 20:04:20.657 INFO [stderr]  --> src/chunkmap.rs:5:5
Dec 19 20:04:20.657 INFO [stderr]   |
Dec 19 20:04:20.658 INFO [stderr] 5 | use self::fnv::FnvHashSet;
Dec 19 20:04:20.658 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.658 INFO [stderr]   |
Dec 19 20:04:20.658 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 20:04:20.658 INFO [stderr] 
Dec 19 20:04:20.658 INFO [stderr] warning: unused import: `Hash`
Dec 19 20:04:20.664 INFO [stderr]   --> src/chunkmap.rs:12:17
Dec 19 20:04:20.664 INFO [stderr]    |
Dec 19 20:04:20.664 INFO [stderr] 12 | use std::hash::{Hash, Hasher};
Dec 19 20:04:20.664 INFO [stderr]    |                 ^^^^
Dec 19 20:04:20.664 INFO [stderr] 
Dec 19 20:04:20.664 INFO [stderr] warning: unused import: `self::fnv::FnvHashSet`
Dec 19 20:04:20.664 INFO [stderr]  --> src/chunkmap.rs:5:5
Dec 19 20:04:20.664 INFO [stderr]   |
Dec 19 20:04:20.664 INFO [stderr] 5 | use self::fnv::FnvHashSet;
Dec 19 20:04:20.664 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.664 INFO [stderr]   |
Dec 19 20:04:20.664 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 20:04:20.664 INFO [stderr] 
Dec 19 20:04:20.664 INFO [stderr] warning: unused import: `Hash`
Dec 19 20:04:20.664 INFO [stderr]   --> src/chunkmap.rs:12:17
Dec 19 20:04:20.664 INFO [stderr]    |
Dec 19 20:04:20.664 INFO [stderr] 12 | use std::hash::{Hash, Hasher};
Dec 19 20:04:20.664 INFO [stderr]    |                 ^^^^
Dec 19 20:04:20.664 INFO [stderr] 
Dec 19 20:04:20.880 INFO [stderr] warning: unused import: `Read`
Dec 19 20:04:20.880 INFO [stderr]   --> src/other.rs:10:33
Dec 19 20:04:20.880 INFO [stderr]    |
Dec 19 20:04:20.880 INFO [stderr] 10 | use std::io::{Error, ErrorKind, Read, Write};
Dec 19 20:04:20.880 INFO [stderr]    |                                 ^^^^
Dec 19 20:04:20.880 INFO [stderr] 
Dec 19 20:04:20.880 INFO [stderr] warning: unused import: `Hasher`
Dec 19 20:04:20.880 INFO [stderr]   --> src/chunkmap.rs:12:23
Dec 19 20:04:20.880 INFO [stderr]    |
Dec 19 20:04:20.880 INFO [stderr] 12 | use std::hash::{Hash, Hasher};
Dec 19 20:04:20.880 INFO [stderr]    |                       ^^^^^^
Dec 19 20:04:20.880 INFO [stderr] 
Dec 19 20:04:20.888 INFO [stderr] warning: unused import: `Read`
Dec 19 20:04:20.888 INFO [stderr]   --> src/other.rs:10:33
Dec 19 20:04:20.888 INFO [stderr]    |
Dec 19 20:04:20.888 INFO [stderr] 10 | use std::io::{Error, ErrorKind, Read, Write};
Dec 19 20:04:20.888 INFO [stderr]    |                                 ^^^^
Dec 19 20:04:20.888 INFO [stderr] 
Dec 19 20:04:20.888 INFO [stderr] warning: unused import: `Hasher`
Dec 19 20:04:20.888 INFO [stderr]   --> src/chunkmap.rs:12:23
Dec 19 20:04:20.888 INFO [stderr]    |
Dec 19 20:04:20.888 INFO [stderr] 12 | use std::hash::{Hash, Hasher};
Dec 19 20:04:20.888 INFO [stderr]    |                       ^^^^^^
Dec 19 20:04:20.888 INFO [stderr] 
Dec 19 20:04:20.960 INFO [stderr] warning: field is never used: `decoder`
Dec 19 20:04:20.960 INFO [stderr]   --> src/other.rs:78:5
Dec 19 20:04:20.968 INFO [stderr]    |
Dec 19 20:04:20.968 INFO [stderr] 78 |     decoder: DeflateDecoder<WriteProxy<Vec<u8>>>,
Dec 19 20:04:20.968 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.968 INFO [stderr]    |
Dec 19 20:04:20.968 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 20:04:20.968 INFO [stderr] 
Dec 19 20:04:20.968 INFO [stderr] warning: constant item is never used: `CHUNK_SIZE`
Dec 19 20:04:20.968 INFO [stderr]   --> src/chunkmap.rs:16:1
Dec 19 20:04:20.968 INFO [stderr]    |
Dec 19 20:04:20.968 INFO [stderr] 16 | const CHUNK_SIZE: usize = 4;
Dec 19 20:04:20.968 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.968 INFO [stderr] 
Dec 19 20:04:20.968 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 20:04:20.968 INFO [stderr]  --> src/lib.rs:2:12
Dec 19 20:04:20.968 INFO [stderr]   |
Dec 19 20:04:20.968 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 19 20:04:20.968 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.968 INFO [stderr]   |
Dec 19 20:04:20.968 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 20:04:20.968 INFO [stderr] 
Dec 19 20:04:20.968 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 19 20:04:20.968 INFO [stderr]  --> src/lib.rs:1:12
Dec 19 20:04:20.968 INFO [stderr]   |
Dec 19 20:04:20.968 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 19 20:04:20.968 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 19 20:04:20.968 INFO [stderr] 
Dec 19 20:04:20.968 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:04:20.968 INFO [stderr]   --> src/other.rs:93:9
Dec 19 20:04:20.968 INFO [stderr]    |
Dec 19 20:04:20.968 INFO [stderr] 93 |         self.encoder.write(&in_buf);
Dec 19 20:04:20.968 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.968 INFO [stderr]    |
Dec 19 20:04:20.968 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:04:20.968 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:04:20.968 INFO [stderr] 
Dec 19 20:04:20.968 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:04:20.968 INFO [stderr]   --> src/other.rs:94:9
Dec 19 20:04:20.968 INFO [stderr]    |
Dec 19 20:04:20.968 INFO [stderr] 94 |         self.encoder.flush();
Dec 19 20:04:20.968 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.968 INFO [stderr]    |
Dec 19 20:04:20.968 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:04:20.968 INFO [stderr] 
Dec 19 20:04:20.968 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:04:20.968 INFO [stderr]   --> src/other.rs:99:9
Dec 19 20:04:20.968 INFO [stderr]    |
Dec 19 20:04:20.968 INFO [stderr] 99 |         self.encoder.write(&in_buf);
Dec 19 20:04:20.968 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.968 INFO [stderr]    |
Dec 19 20:04:20.969 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:04:20.969 INFO [stderr] 
Dec 19 20:04:20.969 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:04:20.969 INFO [stderr]    --> src/other.rs:100:9
Dec 19 20:04:20.969 INFO [stderr]     |
Dec 19 20:04:20.969 INFO [stderr] 100 |         self.encoder.flush();
Dec 19 20:04:20.969 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.976 INFO [stderr]     |
Dec 19 20:04:20.976 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:04:20.976 INFO [stderr] 
Dec 19 20:04:20.976 INFO [stderr] warning: field is never used: `decoder`
Dec 19 20:04:20.976 INFO [stderr]   --> src/other.rs:78:5
Dec 19 20:04:20.976 INFO [stderr]    |
Dec 19 20:04:20.976 INFO [stderr] 78 |     decoder: DeflateDecoder<WriteProxy<Vec<u8>>>,
Dec 19 20:04:20.976 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.976 INFO [stderr]    |
Dec 19 20:04:20.976 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 20:04:20.976 INFO [stderr] 
Dec 19 20:04:20.976 INFO [stderr] warning: constant item is never used: `CHUNK_SIZE`
Dec 19 20:04:20.976 INFO [stderr]   --> src/chunkmap.rs:16:1
Dec 19 20:04:20.976 INFO [stderr]    |
Dec 19 20:04:20.976 INFO [stderr] 16 | const CHUNK_SIZE: usize = 4;
Dec 19 20:04:20.976 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.976 INFO [stderr] 
Dec 19 20:04:20.976 INFO [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 20:04:20.976 INFO [stderr]  --> src/lib.rs:2:12
Dec 19 20:04:20.976 INFO [stderr]   |
Dec 19 20:04:20.976 INFO [stderr] 2 | #![feature(conservative_impl_trait)]
Dec 19 20:04:20.976 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.976 INFO [stderr]   |
Dec 19 20:04:20.976 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 20:04:20.976 INFO [stderr] 
Dec 19 20:04:20.976 INFO [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
Dec 19 20:04:20.976 INFO [stderr]  --> src/lib.rs:1:12
Dec 19 20:04:20.976 INFO [stderr]   |
Dec 19 20:04:20.976 INFO [stderr] 1 | #![feature(iterator_step_by)]
Dec 19 20:04:20.976 INFO [stderr]   |            ^^^^^^^^^^^^^^^^
Dec 19 20:04:20.976 INFO [stderr] 
Dec 19 20:04:20.976 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:04:20.976 INFO [stderr]   --> src/other.rs:93:9
Dec 19 20:04:20.976 INFO [stderr]    |
Dec 19 20:04:20.976 INFO [stderr] 93 |         self.encoder.write(&in_buf);
Dec 19 20:04:20.976 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.980 INFO [stderr]    |
Dec 19 20:04:20.980 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 20:04:20.980 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:04:20.980 INFO [stderr] 
Dec 19 20:04:20.980 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:04:20.980 INFO [stderr]   --> src/other.rs:94:9
Dec 19 20:04:20.980 INFO [stderr]    |
Dec 19 20:04:20.980 INFO [stderr] 94 |         self.encoder.flush();
Dec 19 20:04:20.980 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.980 INFO [stderr]    |
Dec 19 20:04:20.980 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:04:20.980 INFO [stderr] 
Dec 19 20:04:20.980 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:04:20.980 INFO [stderr]   --> src/other.rs:99:9
Dec 19 20:04:20.980 INFO [stderr]    |
Dec 19 20:04:20.980 INFO [stderr] 99 |         self.encoder.write(&in_buf);
Dec 19 20:04:20.980 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.980 INFO [stderr]    |
Dec 19 20:04:20.980 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:04:20.980 INFO [stderr] 
Dec 19 20:04:20.980 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:04:20.980 INFO [stderr]    --> src/other.rs:100:9
Dec 19 20:04:20.980 INFO [stderr]     |
Dec 19 20:04:20.980 INFO [stderr] 100 |         self.encoder.flush();
Dec 19 20:04:20.980 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
Dec 19 20:04:20.980 INFO [stderr]     |
Dec 19 20:04:20.980 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:04:20.980 INFO [stderr] 
Dec 19 20:04:21.660 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.76s
Dec 19 20:04:22.348 INFO running `"docker" "inspect" "20ebe20d6d4cf58a95c54fdb5197391792909fa790048c63c9b5003dd8f42626"`
Dec 19 20:04:22.578 INFO running `"docker" "rm" "-f" "20ebe20d6d4cf58a95c54fdb5197391792909fa790048c63c9b5003dd8f42626"`
Dec 19 20:04:22.836 INFO [stdout] 20ebe20d6d4cf58a95c54fdb5197391792909fa790048c63c9b5003dd8f42626