[INFO] crate csv-groupby 0.7.2 is already in cache
[INFO] testing csv-groupby-0.7.2 against 1.44.0 for beta-1.45-1
[INFO] extracting crate csv-groupby 0.7.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate csv-groupby 0.7.2 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate csv-groupby 0.7.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate csv-groupby 0.7.2
[INFO] tweaked toml for crates.io crate csv-groupby 0.7.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate csv-groupby 0.7.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: version requirement `0.5.1+zstd.1.4.4` for dependency `zstd` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 32be47315824632a2643c348a7744a563fc05a23db7e1c69218a80c7c2e9d885
[INFO] running `"docker" "start" "-a" "32be47315824632a2643c348a7744a563fc05a23db7e1c69218a80c7c2e9d885"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: version requirement `0.5.1+zstd.1.4.4` for dependency `zstd` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling fs_extra v1.1.0
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]    Compiling predicates-core v1.0.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling adler32 v1.0.4
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling encode_unicode v0.3.6
[INFO] [stderr]    Compiling csv-groupby v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling seahash v3.0.7
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling miniz_oxide v0.3.6
[INFO] [stderr]    Compiling predicates-tree v1.0.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling cpu-time v0.1.0
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling float-cmp v0.6.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling chan v0.1.23
[INFO] [stderr]    Compiling prettytable-rs v0.6.7
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling zstd-sys v1.4.15+zstd.1.4.4
[INFO] [stderr]    Compiling jemalloc-sys v0.3.2
[INFO] [stderr]    Compiling pcre2-sys v0.2.2
[INFO] [stderr]    Compiling predicates v1.0.4
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling pcre2 v0.2.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling paste-impl v0.1.11
[INFO] [stderr]    Compiling paste v0.1.11
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]    Compiling structopt v0.3.14
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling serde_json v1.0.52
[INFO] [stderr]    Compiling globset v0.4.5
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling zstd-safe v2.0.3+zstd.1.4.4
[INFO] [stderr]    Compiling zstd v0.5.1+zstd.1.4.4
[INFO] [stderr]    Compiling assert_cmd v0.10.2
[INFO] [stderr]    Compiling grep-cli v0.1.4
[INFO] [stderr]    Compiling ignore v0.4.14
[INFO] [stderr]    Compiling jemalloc-ctl v0.3.3
[INFO] [stderr]    Compiling jemallocator v0.3.2
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/create_very_large_file.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffered`
[INFO] [stderr]  --> src/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[INFO] [stderr]   |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffered`
[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/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[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/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `distro_format`
[INFO] [stderr]   --> src/gen.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn distro_format<T,S>(map: &HashMap<T, usize, S>, upper: usize, bottom: usize) -> String
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mem_metric`
[INFO] [stderr]   --> src/gen.rs:86:4
[INFO] [stderr]    |
[INFO] [stderr] 86 | fn mem_metric<'a>(v: usize) -> (f64, &'a str) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sig_dig`
[INFO] [stderr]    --> src/gen.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn sig_dig(v: f64, digits: usize) -> String {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mem_metric_digit`
[INFO] [stderr]    --> src/gen.rs:124:8
[INFO] [stderr]     |
[INFO] [stderr] 124 | pub fn mem_metric_digit(v: usize, sig: usize) -> String {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greek`
[INFO] [stderr]    --> src/gen.rs:151:8
[INFO] [stderr]     |
[INFO] [stderr] 151 | pub fn greek(v: f64) -> String {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `user_pause`
[INFO] [stderr]    --> src/gen.rs:194:8
[INFO] [stderr]     |
[INFO] [stderr] 194 | pub fn user_pause() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/gen.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     pub fn new() -> IoSlicerStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fill_buff`
[INFO] [stderr]    --> src/gen.rs:228:4
[INFO] [stderr]     |
[INFO] [stderr] 228 | fn fill_buff(handle: &mut dyn Read, buff: &mut [u8]) -> Result<usize, std::io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `io_thread_slicer`
[INFO] [stderr]    --> src/gen.rs:251:8
[INFO] [stderr]     |
[INFO] [stderr] 251 | pub fn io_thread_slicer(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `caps_to_vec_strings`
[INFO] [stderr]    --> src/gen.rs:367:8
[INFO] [stderr]     |
[INFO] [stderr] 367 | pub fn caps_to_vec_strings(caps: &Captures_pcre2) -> Vec<String> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `subs_from_path_buff`
[INFO] [stderr]    --> src/gen.rs:377:8
[INFO] [stderr]     |
[INFO] [stderr] 377 | pub fn subs_from_path_buff(path: &PathBuf, regex: &Option<Regex_pre2>) -> (bool, Vec<String>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `per_file_thread`
[INFO] [stderr]    --> src/gen.rs:390:8
[INFO] [stderr]     |
[INFO] [stderr] 390 | pub fn per_file_thread(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/main.rs:387:9
[INFO] [stderr]     |
[INFO] [stderr] 387 |         (v + 1.into())
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 24s
[INFO] running `"docker" "inspect" "32be47315824632a2643c348a7744a563fc05a23db7e1c69218a80c7c2e9d885"`
[INFO] running `"docker" "rm" "-f" "32be47315824632a2643c348a7744a563fc05a23db7e1c69218a80c7c2e9d885"`
[INFO] [stdout] 32be47315824632a2643c348a7744a563fc05a23db7e1c69218a80c7c2e9d885
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f7aeb79bf05d1d587dfa6a8f1fa7339adee4f1895b171d2c578949731ac7cea0
[INFO] running `"docker" "start" "-a" "f7aeb79bf05d1d587dfa6a8f1fa7339adee4f1895b171d2c578949731ac7cea0"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: version requirement `0.5.1+zstd.1.4.4` for dependency `zstd` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling predicates-core v1.0.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling encode_unicode v0.3.6
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling seahash v3.0.7
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling cpu-time v0.1.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling predicates-tree v1.0.0
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling float-cmp v0.6.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling zstd-sys v1.4.15+zstd.1.4.4
[INFO] [stderr]    Compiling jemalloc-sys v0.3.2
[INFO] [stderr]    Compiling pcre2-sys v0.2.2
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling paste v0.1.11
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling jemallocator v0.3.2
[INFO] [stderr]    Compiling prettytable-rs v0.6.7
[INFO] [stderr]    Compiling zstd-safe v2.0.3+zstd.1.4.4
[INFO] [stderr]    Compiling jemalloc-ctl v0.3.3
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling pcre2 v0.2.3
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling chan v0.1.23
[INFO] [stderr]    Compiling zstd v0.5.1+zstd.1.4.4
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/create_very_large_file.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffered`
[INFO] [stderr]  --> src/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[INFO] [stderr]   |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffered`
[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/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[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: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/main.rs:387:9
[INFO] [stderr]     |
[INFO] [stderr] 387 |         (v + 1.into())
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `distro_format`
[INFO] [stderr]   --> src/gen.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn distro_format<T,S>(map: &HashMap<T, usize, S>, upper: usize, bottom: usize) -> String
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mem_metric`
[INFO] [stderr]   --> src/gen.rs:86:4
[INFO] [stderr]    |
[INFO] [stderr] 86 | fn mem_metric<'a>(v: usize) -> (f64, &'a str) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sig_dig`
[INFO] [stderr]    --> src/gen.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn sig_dig(v: f64, digits: usize) -> String {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mem_metric_digit`
[INFO] [stderr]    --> src/gen.rs:124:8
[INFO] [stderr]     |
[INFO] [stderr] 124 | pub fn mem_metric_digit(v: usize, sig: usize) -> String {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greek`
[INFO] [stderr]    --> src/gen.rs:151:8
[INFO] [stderr]     |
[INFO] [stderr] 151 | pub fn greek(v: f64) -> String {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `user_pause`
[INFO] [stderr]    --> src/gen.rs:194:8
[INFO] [stderr]     |
[INFO] [stderr] 194 | pub fn user_pause() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/gen.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     pub fn new() -> IoSlicerStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fill_buff`
[INFO] [stderr]    --> src/gen.rs:228:4
[INFO] [stderr]     |
[INFO] [stderr] 228 | fn fill_buff(handle: &mut dyn Read, buff: &mut [u8]) -> Result<usize, std::io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `io_thread_slicer`
[INFO] [stderr]    --> src/gen.rs:251:8
[INFO] [stderr]     |
[INFO] [stderr] 251 | pub fn io_thread_slicer(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `caps_to_vec_strings`
[INFO] [stderr]    --> src/gen.rs:367:8
[INFO] [stderr]     |
[INFO] [stderr] 367 | pub fn caps_to_vec_strings(caps: &Captures_pcre2) -> Vec<String> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `subs_from_path_buff`
[INFO] [stderr]    --> src/gen.rs:377:8
[INFO] [stderr]     |
[INFO] [stderr] 377 | pub fn subs_from_path_buff(path: &PathBuf, regex: &Option<Regex_pre2>) -> (bool, Vec<String>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `per_file_thread`
[INFO] [stderr]    --> src/gen.rs:390:8
[INFO] [stderr]     |
[INFO] [stderr] 390 | pub fn per_file_thread(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling structopt v0.3.14
[INFO] [stderr]    Compiling predicates v1.0.4
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling serde_json v1.0.52
[INFO] [stderr]    Compiling globset v0.4.5
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]    Compiling grep-cli v0.1.4
[INFO] [stderr]    Compiling ignore v0.4.14
[INFO] [stderr]    Compiling assert_cmd v0.10.2
[INFO] [stderr]    Compiling csv-groupby v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/create_very_large_file.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffered`
[INFO] [stderr]  --> src/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[INFO] [stderr]   |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffered`
[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/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[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/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/main.rs:387:9
[INFO] [stderr]     |
[INFO] [stderr] 387 |         (v + 1.into())
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greek`
[INFO] [stderr]    --> src/gen.rs:151:8
[INFO] [stderr]     |
[INFO] [stderr] 151 | pub fn greek(v: f64) -> String {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `user_pause`
[INFO] [stderr]    --> src/gen.rs:194:8
[INFO] [stderr]     |
[INFO] [stderr] 194 | pub fn user_pause() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/gen.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     pub fn new() -> IoSlicerStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fill_buff`
[INFO] [stderr]    --> src/gen.rs:228:4
[INFO] [stderr]     |
[INFO] [stderr] 228 | fn fill_buff(handle: &mut dyn Read, buff: &mut [u8]) -> Result<usize, std::io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `io_thread_slicer`
[INFO] [stderr]    --> src/gen.rs:251:8
[INFO] [stderr]     |
[INFO] [stderr] 251 | pub fn io_thread_slicer(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `caps_to_vec_strings`
[INFO] [stderr]    --> src/gen.rs:367:8
[INFO] [stderr]     |
[INFO] [stderr] 367 | pub fn caps_to_vec_strings(caps: &Captures_pcre2) -> Vec<String> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `subs_from_path_buff`
[INFO] [stderr]    --> src/gen.rs:377:8
[INFO] [stderr]     |
[INFO] [stderr] 377 | pub fn subs_from_path_buff(path: &PathBuf, regex: &Option<Regex_pre2>) -> (bool, Vec<String>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `per_file_thread`
[INFO] [stderr]    --> src/gen.rs:390:8
[INFO] [stderr]     |
[INFO] [stderr] 390 | pub fn per_file_thread(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `"docker" "inspect" "f7aeb79bf05d1d587dfa6a8f1fa7339adee4f1895b171d2c578949731ac7cea0"`
[INFO] running `"docker" "rm" "-f" "f7aeb79bf05d1d587dfa6a8f1fa7339adee4f1895b171d2c578949731ac7cea0"`
[INFO] [stdout] f7aeb79bf05d1d587dfa6a8f1fa7339adee4f1895b171d2c578949731ac7cea0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e5e1586dd455fe50f43d8552d18223ae32cb6b91f66ca3c101abbb5b2792740f
[INFO] running `"docker" "start" "-a" "e5e1586dd455fe50f43d8552d18223ae32cb6b91f66ca3c101abbb5b2792740f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: version requirement `0.5.1+zstd.1.4.4` for dependency `zstd` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/create_very_large_file.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffered`
[INFO] [stderr]  --> src/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[INFO] [stderr]   |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffered`
[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/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[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: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `distro_format`
[INFO] [stderr]   --> src/gen.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn distro_format<T,S>(map: &HashMap<T, usize, S>, upper: usize, bottom: usize) -> String
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mem_metric`
[INFO] [stderr]   --> src/gen.rs:86:4
[INFO] [stderr]    |
[INFO] [stderr] 86 | fn mem_metric<'a>(v: usize) -> (f64, &'a str) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sig_dig`
[INFO] [stderr]    --> src/gen.rs:100:4
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn sig_dig(v: f64, digits: usize) -> String {
[INFO] [stderr]     |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mem_metric_digit`
[INFO] [stderr]    --> src/gen.rs:124:8
[INFO] [stderr]     |
[INFO] [stderr] 124 | pub fn mem_metric_digit(v: usize, sig: usize) -> String {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greek`
[INFO] [stderr]    --> src/gen.rs:151:8
[INFO] [stderr]     |
[INFO] [stderr] 151 | pub fn greek(v: f64) -> String {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `user_pause`
[INFO] [stderr]    --> src/gen.rs:194:8
[INFO] [stderr]     |
[INFO] [stderr] 194 | pub fn user_pause() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/gen.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     pub fn new() -> IoSlicerStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fill_buff`
[INFO] [stderr]    --> src/gen.rs:228:4
[INFO] [stderr]     |
[INFO] [stderr] 228 | fn fill_buff(handle: &mut dyn Read, buff: &mut [u8]) -> Result<usize, std::io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `io_thread_slicer`
[INFO] [stderr]    --> src/gen.rs:251:8
[INFO] [stderr]     |
[INFO] [stderr] 251 | pub fn io_thread_slicer(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `caps_to_vec_strings`
[INFO] [stderr]    --> src/gen.rs:367:8
[INFO] [stderr]     |
[INFO] [stderr] 367 | pub fn caps_to_vec_strings(caps: &Captures_pcre2) -> Vec<String> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `subs_from_path_buff`
[INFO] [stderr]    --> src/gen.rs:377:8
[INFO] [stderr]     |
[INFO] [stderr] 377 | pub fn subs_from_path_buff(path: &PathBuf, regex: &Option<Regex_pre2>) -> (bool, Vec<String>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `per_file_thread`
[INFO] [stderr]    --> src/gen.rs:390:8
[INFO] [stderr]     |
[INFO] [stderr] 390 | pub fn per_file_thread(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/main.rs:387:9
[INFO] [stderr]     |
[INFO] [stderr] 387 |         (v + 1.into())
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greek`
[INFO] [stderr]    --> src/gen.rs:151:8
[INFO] [stderr]     |
[INFO] [stderr] 151 | pub fn greek(v: f64) -> String {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `user_pause`
[INFO] [stderr]    --> src/gen.rs:194:8
[INFO] [stderr]     |
[INFO] [stderr] 194 | pub fn user_pause() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/gen.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     pub fn new() -> IoSlicerStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fill_buff`
[INFO] [stderr]    --> src/gen.rs:228:4
[INFO] [stderr]     |
[INFO] [stderr] 228 | fn fill_buff(handle: &mut dyn Read, buff: &mut [u8]) -> Result<usize, std::io::Error> {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `io_thread_slicer`
[INFO] [stderr]    --> src/gen.rs:251:8
[INFO] [stderr]     |
[INFO] [stderr] 251 | pub fn io_thread_slicer(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `caps_to_vec_strings`
[INFO] [stderr]    --> src/gen.rs:367:8
[INFO] [stderr]     |
[INFO] [stderr] 367 | pub fn caps_to_vec_strings(caps: &Captures_pcre2) -> Vec<String> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `subs_from_path_buff`
[INFO] [stderr]    --> src/gen.rs:377:8
[INFO] [stderr]     |
[INFO] [stderr] 377 | pub fn subs_from_path_buff(path: &PathBuf, regex: &Option<Regex_pre2>) -> (bool, Vec<String>) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `per_file_thread`
[INFO] [stderr]    --> src/gen.rs:390:8
[INFO] [stderr]     |
[INFO] [stderr] 390 | pub fn per_file_thread(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/gen.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |         let mut rdr:Box<Read> = match &ext[..] {
[INFO] [stderr]     |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/main.rs:387:9
[INFO] [stderr]     |
[INFO] [stderr] 387 |         (v + 1.into())
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/create_very_large_file.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buffered`
[INFO] [stderr]  --> src/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[INFO] [stderr]   |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_buffered`
[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/create_very_large_file.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut buffered = BufWriter::new(stdout.lock());
[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: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.30s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/append-be415268e39d92a0
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/create_very_large_file-4dd0039c3fc58bad
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test gen::test_distro_format ... ok
[INFO] [stdout] test gen::test_mem_metric_digit ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gb-5dde1c602c9a7183
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/quick-7222e2229f0609e0
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test gen::test_mem_metric_digit ... ok
[INFO] [stdout] test gen::test_distro_format ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test gen::test_distro_format ... ok
[INFO] [stdout] test gen::test_mem_metric_digit ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/general_tests-40ce09cf11b27f31
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test tests::force_threaded_varied_block_size ... test tests::force_threaded_varied_block_size has been running for over 60 seconds
[INFO] [stdout] test tests::force_threaded_varied_block_size_keyones ... test tests::force_threaded_varied_block_size_keyones has been running for over 60 seconds
[INFO] [stdout] test tests::re_force_thread_small_block ... test tests::re_force_thread_small_block has been running for over 60 seconds
[INFO] [stdout] test tests::run_easy ... test tests::run_easy has been running for over 60 seconds
[INFO] [stdout] test tests::write_distros ... test tests::write_distros has been running for over 60 seconds
[INFO] [stdout] test tests::force_threaded_varied_block_size_no_final_newline ... test tests::force_threaded_varied_block_size_no_final_newline has been running for over 60 seconds
[INFO] [stdout] test tests::force_threaded_small_block ... test tests::force_threaded_small_block has been running for over 60 seconds
[INFO] [stdout] test tests::re_force_thread_small_block_afile ... test tests::re_force_thread_small_block_afile has been running for over 60 seconds
[INFO] [stdout] test tests::re_force_thread_small_block ... ok
[INFO] [stdout] test tests::force_threaded_small_block ... ok
[INFO] [stdout] test tests::re_force_thread_small_block_afile ... ok
[INFO] [stdout] test tests::run_easy ... ok
[INFO] [stdout] test tests::write_distros ... ok
[INFO] [stdout] test tests::force_threaded_varied_block_size_keyones ... ok
[INFO] [stdout] test tests::force_threaded_varied_block_size_no_final_newline ... ok
[INFO] [stdout] test tests::force_threaded_varied_block_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e5e1586dd455fe50f43d8552d18223ae32cb6b91f66ca3c101abbb5b2792740f"`
[INFO] running `"docker" "rm" "-f" "e5e1586dd455fe50f43d8552d18223ae32cb6b91f66ca3c101abbb5b2792740f"`
[INFO] [stdout] e5e1586dd455fe50f43d8552d18223ae32cb6b91f66ca3c101abbb5b2792740f