[INFO] updating cached repository https://github.com/bahusvel/dssc
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6ffe0353802ea6da6ff5835d7d41923852183359
[INFO] checking bahusvel/dssc against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbahusvel%2Fdssc" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bahusvel/dssc on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bahusvel/dssc
[INFO] finished tweaking git repo https://github.com/bahusvel/dssc
[INFO] tweaked toml for git repo https://github.com/bahusvel/dssc written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/bahusvel/dssc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3f5301e6f7e59d5934420e96d9d9710fc5445702f5b0b99385e2fd972d7a56cd
[INFO] running `"docker" "start" "-a" "3f5301e6f7e59d5934420e96d9d9710fc5445702f5b0b99385e2fd972d7a56cd"`
[INFO] [stderr]    Compiling zstd-sys v1.4.2+zstd.1.3.3
[INFO] [stderr]     Checking zstd-safe v1.4.2+zstd.1.3.3
[INFO] [stderr]     Checking zstd v0.4.17+zstd.1.3.3
[INFO] [stderr]     Checking dssc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/chunked.rs:219:19
[INFO] [stderr]     |
[INFO] [stderr] 219 |         (self as &fmt::Display).fmt(f)
[INFO] [stderr]     |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::fnv::FnvHashSet`
[INFO] [stderr]  --> src/chunkmap.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use self::fnv::FnvHashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Hash`
[INFO] [stderr]   --> src/chunkmap.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::hash::{Hash, Hasher};
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/chunkmap.rs:50:19
[INFO] [stderr]    |
[INFO] [stderr] 50 |         (self as &fmt::Display).fmt(f)
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/varint.rs:32:29
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn read_uvarint(r: &mut Read) -> Result<u64, Error> {
[INFO] [stderr]    |                             ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]   --> src/other.rs:10:33
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::io::{Error, ErrorKind, Read, Write};
[INFO] [stderr]    |                                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Hasher`
[INFO] [stderr]   --> src/chunkmap.rs:12:23
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::hash::{Hash, Hasher};
[INFO] [stderr]    |                       ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `decoder`
[INFO] [stderr]   --> src/other.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     decoder: DeflateDecoder<WriteProxy<Vec<u8>>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CHUNK_SIZE`
[INFO] [stderr]   --> src/chunkmap.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | const CHUNK_SIZE: usize = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(iterator_step_by)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/other.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         self.encoder.write(&in_buf);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/other.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |         self.encoder.flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/other.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |         self.encoder.write(&in_buf);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/other.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         self.encoder.flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/chunked.rs:219:19
[INFO] [stderr]     |
[INFO] [stderr] 219 |         (self as &fmt::Display).fmt(f)
[INFO] [stderr]     |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::fnv::FnvHashSet`
[INFO] [stderr]  --> src/chunkmap.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use self::fnv::FnvHashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Hash`
[INFO] [stderr]   --> src/chunkmap.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::hash::{Hash, Hasher};
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/chunkmap.rs:50:19
[INFO] [stderr]    |
[INFO] [stderr] 50 |         (self as &fmt::Display).fmt(f)
[INFO] [stderr]    |                   ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/varint.rs:32:29
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn read_uvarint(r: &mut Read) -> Result<u64, Error> {
[INFO] [stderr]    |                             ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]   --> src/other.rs:10:33
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::io::{Error, ErrorKind, Read, Write};
[INFO] [stderr]    |                                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Hasher`
[INFO] [stderr]   --> src/chunkmap.rs:12:23
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::hash::{Hash, Hasher};
[INFO] [stderr]    |                       ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `decoder`
[INFO] [stderr]   --> src/other.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     decoder: DeflateDecoder<WriteProxy<Vec<u8>>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CHUNK_SIZE`
[INFO] [stderr]   --> src/chunkmap.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | const CHUNK_SIZE: usize = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(conservative_impl_trait)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(iterator_step_by)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/other.rs:93:9
[INFO] [stderr]    |
[INFO] [stderr] 93 |         self.encoder.write(&in_buf);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/other.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |         self.encoder.flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/other.rs:99:9
[INFO] [stderr]    |
[INFO] [stderr] 99 |         self.encoder.write(&in_buf);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/other.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         self.encoder.flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/linedssc/main.rs:17:41
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn encode<R: Read, W: Write>(comp: &mut Compressor, input: R, mut output: W) -> Result<(), Error> {
[INFO] [stderr]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Compressor`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/linedssc/main.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |     comp: &mut Compressor,
[INFO] [stderr]    |                ^^^^^^^^^^ help: use `dyn`: `dyn Compressor`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/linedssc/main.rs:98:23
[INFO] [stderr]    |
[INFO] [stderr] 98 |     let mut comp: Box<Compressor> = match matches.value_of("algorithm") {
[INFO] [stderr]    |                       ^^^^^^^^^^ help: use `dyn`: `dyn Compressor`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/linedssc/main.rs:105:20
[INFO] [stderr]     |
[INFO] [stderr] 105 |     let input: Box<Read> = match matches.value_of("input") {
[INFO] [stderr]     |                    ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/linedssc/main.rs:111:21
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let output: Box<Write> = match matches.value_of("output") {
[INFO] [stderr]     |                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/linedssc/main.rs:17:41
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn encode<R: Read, W: Write>(comp: &mut Compressor, input: R, mut output: W) -> Result<(), Error> {
[INFO] [stderr]    |                                         ^^^^^^^^^^ help: use `dyn`: `dyn Compressor`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/linedssc/main.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |     comp: &mut Compressor,
[INFO] [stderr]    |                ^^^^^^^^^^ help: use `dyn`: `dyn Compressor`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/linedssc/main.rs:98:23
[INFO] [stderr]    |
[INFO] [stderr] 98 |     let mut comp: Box<Compressor> = match matches.value_of("algorithm") {
[INFO] [stderr]    |                       ^^^^^^^^^^ help: use `dyn`: `dyn Compressor`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/linedssc/main.rs:105:20
[INFO] [stderr]     |
[INFO] [stderr] 105 |     let input: Box<Read> = match matches.value_of("input") {
[INFO] [stderr]     |                    ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/linedssc/main.rs:111:21
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let output: Box<Write> = match matches.value_of("output") {
[INFO] [stderr]     |                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.73s
[INFO] running `"docker" "inspect" "3f5301e6f7e59d5934420e96d9d9710fc5445702f5b0b99385e2fd972d7a56cd"`
[INFO] running `"docker" "rm" "-f" "3f5301e6f7e59d5934420e96d9d9710fc5445702f5b0b99385e2fd972d7a56cd"`
[INFO] [stdout] 3f5301e6f7e59d5934420e96d9d9710fc5445702f5b0b99385e2fd972d7a56cd