[INFO] fetching crate csv-groupby 0.10.0...
[INFO] building csv-groupby-0.10.0 against try#615edd3ad1cf6871c977dc900317cb6c2070fd6b for pr-97334
[INFO] extracting crate csv-groupby 0.10.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate csv-groupby 0.10.0 on toolchain 615edd3ad1cf6871c977dc900317cb6c2070fd6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate csv-groupby 0.10.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate csv-groupby 0.10.0
[INFO] tweaked toml for crates.io crate csv-groupby 0.10.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate csv-groupby 0.10.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: version requirement `0.9.0+zstd.1.5.0` for dependency `zstd` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f79c408f23ce08ad985d43b701d4ea9c71fdbaec3261f444a90b6b0c0bba06a2
[INFO] running `Command { std: "docker" "start" "-a" "f79c408f23ce08ad985d43b701d4ea9c71fdbaec3261f444a90b6b0c0bba06a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f79c408f23ce08ad985d43b701d4ea9c71fdbaec3261f444a90b6b0c0bba06a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f79c408f23ce08ad985d43b701d4ea9c71fdbaec3261f444a90b6b0c0bba06a2", kill_on_drop: false }`
[INFO] [stdout] f79c408f23ce08ad985d43b701d4ea9c71fdbaec3261f444a90b6b0c0bba06a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d54fbe7e6f1ded87a2007e66219a81a6fcef42ba90c060792a76f5bc9c9f9e98
[INFO] running `Command { std: "docker" "start" "-a" "d54fbe7e6f1ded87a2007e66219a81a6fcef42ba90c060792a76f5bc9c9f9e98", kill_on_drop: false }`
[INFO] [stderr] warning: version requirement `0.9.0+zstd.1.5.0` for dependency `zstd` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling scopeguard v1.1.0
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[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling zstd-safe v4.1.1+zstd.1.5.0
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[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling treeline v0.1.0
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[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling csv-groupby v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling encode_unicode v0.3.6
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stdout] warning: unused import: `std::thread::LocalKey`
[INFO] [stdout]  --> build.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread::LocalKey;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling predicates-tree v1.0.2
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
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[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling getrandom v0.2.3
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[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling num_cpus v1.13.0
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[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling rand_core v0.6.3
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[INFO] [stderr]    Compiling term v0.5.2
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[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling addr2line v0.15.2
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
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[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling zstd-sys v1.6.1+zstd.1.5.0
[INFO] [stderr]    Compiling jemalloc-sys v0.3.2
[INFO] [stderr]    Compiling pcre2-sys v0.2.5
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling predicates v1.0.8
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[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling paste v0.1.18
[INFO] [stderr]    Compiling pcre2 v0.2.3
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling globset v0.4.8
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling assert_cmd v0.10.2
[INFO] [stderr]    Compiling ignore v0.4.18
[INFO] [stderr]    Compiling grep-cli v0.1.6
[INFO] [stderr]    Compiling zstd v0.9.0+zstd.1.5.0
[INFO] [stderr]    Compiling jemallocator v0.3.2
[INFO] [stderr]    Compiling jemalloc-ctl v0.3.3
[INFO] [stdout] warning: function is never used: `gettid`
[INFO] [stdout]   --> src/gen.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn gettid() -> usize {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mem_metric`
[INFO] [stdout]   --> src/gen.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn mem_metric<'a>(v: usize) -> (f64, &'a str) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sig_dig`
[INFO] [stdout]    --> src/gen.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn sig_dig(v: f64, digits: usize) -> String {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mem_metric_digit`
[INFO] [stdout]    --> src/gen.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub fn mem_metric_digit(v: usize, sig: usize) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `greek`
[INFO] [stdout]    --> src/gen.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn greek(v: f64) -> String {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `user_pause`
[INFO] [stdout]    --> src/gen.rs:207:8
[INFO] [stdout]     |
[INFO] [stdout] 207 | pub fn user_pause() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/gen.rs:223:12
[INFO] [stdout]     |
[INFO] [stdout] 223 |     pub fn new() -> IoSlicerStatus {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill_buff`
[INFO] [stdout]    --> src/gen.rs:241:4
[INFO] [stdout]     |
[INFO] [stdout] 241 | fn fill_buff(handle: &mut dyn Read, buff: &mut [u8]) -> Result<usize, std::io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `io_thread_slicer`
[INFO] [stdout]    --> src/gen.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 | pub fn io_thread_slicer(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `caps_to_vec_strings`
[INFO] [stdout]    --> src/gen.rs:379:8
[INFO] [stdout]     |
[INFO] [stdout] 379 | pub fn caps_to_vec_strings(caps: &Captures_pcre2) -> Vec<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subs_from_path_buff`
[INFO] [stdout]    --> src/gen.rs:389:8
[INFO] [stdout]     |
[INFO] [stdout] 389 | pub fn subs_from_path_buff(path: &PathBuf, regex: &Option<Regex_pre2>) -> (bool, Vec<String>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `per_file_thread`
[INFO] [stdout]    --> src/gen.rs:402:8
[INFO] [stdout]     |
[INFO] [stdout] 402 | pub fn per_file_thread(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:315:22
[INFO] [stdout]     |
[INFO] [stdout] 315 |     pub head: Option<(u64)>,
[INFO] [stdout]     |                      ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 315 -     pub head: Option<(u64)>,
[INFO] [stdout] 315 +     pub head: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:319:22
[INFO] [stdout]     |
[INFO] [stdout] 319 |     pub tail: Option<(u64)>,
[INFO] [stdout]     |                      ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 319 -     pub tail: Option<(u64)>,
[INFO] [stdout] 319 +     pub tail: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:331:26
[INFO] [stdout]     |
[INFO] [stdout] 331 |     pub count_le: Option<(u64)>,
[INFO] [stdout]     |                          ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 331 -     pub count_le: Option<(u64)>,
[INFO] [stdout] 331 +     pub count_le: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:335:26
[INFO] [stdout]     |
[INFO] [stdout] 335 |     pub count_ge: Option<(u64)>,
[INFO] [stdout]     |                          ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 335 -     pub count_ge: Option<(u64)>,
[INFO] [stdout] 335 +     pub count_ge: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/keysum.rs:104:16
[INFO] [stdout]     |
[INFO] [stdout] 104 |             if ( v.is_none()) {
[INFO] [stdout]     |                ^^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -             if ( v.is_none()) {
[INFO] [stdout] 104 +             if v.is_none() {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `print_skipped`
[INFO] [stdout]    --> src/main.rs:496:21
[INFO] [stdout]     |
[INFO] [stdout] 496 |             let mut print_skipped = false; // for the stuff after head and before tail
[INFO] [stdout]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_print_skipped`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `inner_count`
[INFO] [stdout]    --> src/main.rs:843:30
[INFO] [stdout]     |
[INFO] [stdout] 843 |             'LINE_LOOP: for (inner_count, line) in slice.split(|c| *c == b'\n').enumerate() {
[INFO] [stdout]     |                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_inner_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/main.rs:987:56
[INFO] [stdout]     |
[INFO] [stdout] 987 | ...                   csv::ErrorKind::Utf8 { ref err, pos } => {
[INFO] [stdout]     |                                              ^^^^^^^ help: try ignoring the field: `err: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `cnt_rec` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:999:25
[INFO] [stdout]     |
[INFO] [stdout] 999 |                 let mut cnt_rec = 0usize;
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_cnt_rec` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]     --> src/main.rs:1021:56
[INFO] [stdout]      |
[INFO] [stdout] 1021 | ...                   csv::ErrorKind::Utf8 { ref err, pos } => {
[INFO] [stdout]      |                                              ^^^^^^^ help: try ignoring the field: `err: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]     --> src/main.rs:1148:28
[INFO] [stdout]      |
[INFO] [stdout] 1148 |                 if let Err(e) = line {
[INFO] [stdout]      |                            ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ss`
[INFO] [stdout]    --> src/keysum.rs:167:53
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn schema_rec<T>(matrix: &mut Vec<Vec<String>>, ss: &mut String, line: &str, record: &T, rec_len: usize, map: &mut MyMap, cfg: &CliCf...
[INFO] [stdout]     |                                                     ^^ help: if this is intentional, prefix it with an underscore: `_ss`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/keysum.rs:167:70
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...Vec<String>>, ss: &mut String, line: &str, record: &T, rec_len: usize, map: &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,...
[INFO] [stdout]     |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]    --> src/keysum.rs:167:110
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...tr, record: &T, rec_len: usize, map: &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,usize)
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]    --> src/keysum.rs:167:127
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...ec_len: usize, map: &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,usize)
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rowcount`
[INFO] [stdout]    --> src/keysum.rs:167:141
[INFO] [stdout]     |
[INFO] [stdout] 167 | ... &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,usize)
[INFO] [stdout]     |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rowcount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `null_str`
[INFO] [stdout]    --> src/keysum.rs:140:17
[INFO] [stdout]     |
[INFO] [stdout] 140 |             let null_str = String::from("NULL");
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_null_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/keysum.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |             let mut v = self.matrix.get_mut(i);
[INFO] [stdout]     |                 ----^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/keysum.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     let mut lines_filtered = 0usize;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:496:17
[INFO] [stdout]     |
[INFO] [stdout] 496 |             let mut print_skipped = false; // for the stuff after head and before tail
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:922:9
[INFO] [stdout]     |
[INFO] [stdout] 922 |     let mut csv_builder = create_csv_builder(&cfg);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1215:13
[INFO] [stdout]      |
[INFO] [stdout] 1215 |         let mut b = slice[pos];
[INFO] [stdout]      |             ----^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:761:20
[INFO] [stdout]     |
[INFO] [stdout] 761 |             panic!(err_msg);
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 761 |             panic!("{}", err_msg);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:908:20
[INFO] [stdout]     |
[INFO] [stdout] 908 |             panic!(err_msg);
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 908 |             panic!("{}", err_msg);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/main.rs:1049:20
[INFO] [stdout]      |
[INFO] [stdout] 1049 |             panic!(err_msg);
[INFO] [stdout]      |                    ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1049 |             panic!("{}", err_msg);
[INFO] [stdout]      |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `ISO_8859` should have a snake case name
[INFO] [stdout]    --> src/cli.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |     pub ISO_8859: bool,
[INFO] [stdout]     |         ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `iso_8859`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "d54fbe7e6f1ded87a2007e66219a81a6fcef42ba90c060792a76f5bc9c9f9e98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d54fbe7e6f1ded87a2007e66219a81a6fcef42ba90c060792a76f5bc9c9f9e98", kill_on_drop: false }`
[INFO] [stdout] d54fbe7e6f1ded87a2007e66219a81a6fcef42ba90c060792a76f5bc9c9f9e98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c77d0baed927f90771ac3e869626952f9584e0dc3da18d1cf4e7849b9a474617
[INFO] running `Command { std: "docker" "start" "-a" "c77d0baed927f90771ac3e869626952f9584e0dc3da18d1cf4e7849b9a474617", kill_on_drop: false }`
[INFO] [stderr] warning: version requirement `0.9.0+zstd.1.5.0` for dependency `zstd` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stdout] warning: unused import: `std::thread::LocalKey`
[INFO] [stdout]  --> build.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread::LocalKey;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling encode_unicode v0.3.6
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling cpu-time v1.0.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling paste v0.1.18
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling jemalloc-sys v0.3.2
[INFO] [stderr]    Compiling zstd-sys v1.6.1+zstd.1.5.0
[INFO] [stderr]    Compiling pcre2-sys v0.2.5
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:315:22
[INFO] [stdout]     |
[INFO] [stdout] 315 |     pub head: Option<(u64)>,
[INFO] [stdout]     |                      ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 315 -     pub head: Option<(u64)>,
[INFO] [stdout] 315 +     pub head: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:319:22
[INFO] [stdout]     |
[INFO] [stdout] 319 |     pub tail: Option<(u64)>,
[INFO] [stdout]     |                      ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 319 -     pub tail: Option<(u64)>,
[INFO] [stdout] 319 +     pub tail: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:331:26
[INFO] [stdout]     |
[INFO] [stdout] 331 |     pub count_le: Option<(u64)>,
[INFO] [stdout]     |                          ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 331 -     pub count_le: Option<(u64)>,
[INFO] [stdout] 331 +     pub count_le: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:335:26
[INFO] [stdout]     |
[INFO] [stdout] 335 |     pub count_ge: Option<(u64)>,
[INFO] [stdout]     |                          ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 335 -     pub count_ge: Option<(u64)>,
[INFO] [stdout] 335 +     pub count_ge: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/keysum.rs:104:16
[INFO] [stdout]     |
[INFO] [stdout] 104 |             if ( v.is_none()) {
[INFO] [stdout]     |                ^^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -             if ( v.is_none()) {
[INFO] [stdout] 104 +             if v.is_none() {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `print_skipped`
[INFO] [stdout]    --> src/main.rs:496:21
[INFO] [stdout]     |
[INFO] [stdout] 496 |             let mut print_skipped = false; // for the stuff after head and before tail
[INFO] [stdout]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_print_skipped`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `inner_count`
[INFO] [stdout]    --> src/main.rs:843:30
[INFO] [stdout]     |
[INFO] [stdout] 843 |             'LINE_LOOP: for (inner_count, line) in slice.split(|c| *c == b'\n').enumerate() {
[INFO] [stdout]     |                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_inner_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/main.rs:987:56
[INFO] [stdout]     |
[INFO] [stdout] 987 | ...                   csv::ErrorKind::Utf8 { ref err, pos } => {
[INFO] [stdout]     |                                              ^^^^^^^ help: try ignoring the field: `err: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `cnt_rec` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:999:25
[INFO] [stdout]     |
[INFO] [stdout] 999 |                 let mut cnt_rec = 0usize;
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_cnt_rec` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]     --> src/main.rs:1021:56
[INFO] [stdout]      |
[INFO] [stdout] 1021 | ...                   csv::ErrorKind::Utf8 { ref err, pos } => {
[INFO] [stdout]      |                                              ^^^^^^^ help: try ignoring the field: `err: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]     --> src/main.rs:1148:28
[INFO] [stdout]      |
[INFO] [stdout] 1148 |                 if let Err(e) = line {
[INFO] [stdout]      |                            ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ss`
[INFO] [stdout]    --> src/keysum.rs:167:53
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn schema_rec<T>(matrix: &mut Vec<Vec<String>>, ss: &mut String, line: &str, record: &T, rec_len: usize, map: &mut MyMap, cfg: &CliCf...
[INFO] [stdout]     |                                                     ^^ help: if this is intentional, prefix it with an underscore: `_ss`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/keysum.rs:167:70
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...Vec<String>>, ss: &mut String, line: &str, record: &T, rec_len: usize, map: &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,...
[INFO] [stdout]     |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]    --> src/keysum.rs:167:110
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...tr, record: &T, rec_len: usize, map: &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,usize)
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]    --> src/keysum.rs:167:127
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...ec_len: usize, map: &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,usize)
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rowcount`
[INFO] [stdout]    --> src/keysum.rs:167:141
[INFO] [stdout]     |
[INFO] [stdout] 167 | ... &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,usize)
[INFO] [stdout]     |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rowcount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `null_str`
[INFO] [stdout]    --> src/keysum.rs:140:17
[INFO] [stdout]     |
[INFO] [stdout] 140 |             let null_str = String::from("NULL");
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_null_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/keysum.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |             let mut v = self.matrix.get_mut(i);
[INFO] [stdout]     |                 ----^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/keysum.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     let mut lines_filtered = 0usize;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:496:17
[INFO] [stdout]     |
[INFO] [stdout] 496 |             let mut print_skipped = false; // for the stuff after head and before tail
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:922:9
[INFO] [stdout]     |
[INFO] [stdout] 922 |     let mut csv_builder = create_csv_builder(&cfg);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1215:13
[INFO] [stdout]      |
[INFO] [stdout] 1215 |         let mut b = slice[pos];
[INFO] [stdout]      |             ----^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:761:20
[INFO] [stdout]     |
[INFO] [stdout] 761 |             panic!(err_msg);
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 761 |             panic!("{}", err_msg);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:908:20
[INFO] [stdout]     |
[INFO] [stdout] 908 |             panic!(err_msg);
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 908 |             panic!("{}", err_msg);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/main.rs:1049:20
[INFO] [stdout]      |
[INFO] [stdout] 1049 |             panic!(err_msg);
[INFO] [stdout]      |                    ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1049 |             panic!("{}", err_msg);
[INFO] [stdout]      |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `ISO_8859` should have a snake case name
[INFO] [stdout]    --> src/cli.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |     pub ISO_8859: bool,
[INFO] [stdout]     |         ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `iso_8859`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gettid`
[INFO] [stdout]   --> src/gen.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn gettid() -> usize {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mem_metric`
[INFO] [stdout]   --> src/gen.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn mem_metric<'a>(v: usize) -> (f64, &'a str) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sig_dig`
[INFO] [stdout]    --> src/gen.rs:112:4
[INFO] [stdout]     |
[INFO] [stdout] 112 | fn sig_dig(v: f64, digits: usize) -> String {
[INFO] [stdout]     |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mem_metric_digit`
[INFO] [stdout]    --> src/gen.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub fn mem_metric_digit(v: usize, sig: usize) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `greek`
[INFO] [stdout]    --> src/gen.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn greek(v: f64) -> String {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `user_pause`
[INFO] [stdout]    --> src/gen.rs:207:8
[INFO] [stdout]     |
[INFO] [stdout] 207 | pub fn user_pause() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/gen.rs:223:12
[INFO] [stdout]     |
[INFO] [stdout] 223 |     pub fn new() -> IoSlicerStatus {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill_buff`
[INFO] [stdout]    --> src/gen.rs:241:4
[INFO] [stdout]     |
[INFO] [stdout] 241 | fn fill_buff(handle: &mut dyn Read, buff: &mut [u8]) -> Result<usize, std::io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `io_thread_slicer`
[INFO] [stdout]    --> src/gen.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 | pub fn io_thread_slicer(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `caps_to_vec_strings`
[INFO] [stdout]    --> src/gen.rs:379:8
[INFO] [stdout]     |
[INFO] [stdout] 379 | pub fn caps_to_vec_strings(caps: &Captures_pcre2) -> Vec<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subs_from_path_buff`
[INFO] [stdout]    --> src/gen.rs:389:8
[INFO] [stdout]     |
[INFO] [stdout] 389 | pub fn subs_from_path_buff(path: &PathBuf, regex: &Option<Regex_pre2>) -> (bool, Vec<String>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `per_file_thread`
[INFO] [stdout]    --> src/gen.rs:402:8
[INFO] [stdout]     |
[INFO] [stdout] 402 | pub fn per_file_thread(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling predicates-tree v1.0.2
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling jemalloc-ctl v0.3.3
[INFO] [stderr]    Compiling jemallocator v0.3.2
[INFO] [stderr]    Compiling zstd-safe v4.1.1+zstd.1.5.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling pcre2 v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling zstd v0.9.0+zstd.1.5.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling chan v0.1.23
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling predicates v1.0.8
[INFO] [stderr]    Compiling globset v0.4.8
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]    Compiling grep-cli v0.1.6
[INFO] [stderr]    Compiling ignore v0.4.18
[INFO] [stderr]    Compiling assert_cmd v0.10.2
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling csv-groupby v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:315:22
[INFO] [stdout]     |
[INFO] [stdout] 315 |     pub head: Option<(u64)>,
[INFO] [stdout]     |                      ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 315 -     pub head: Option<(u64)>,
[INFO] [stdout] 315 +     pub head: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:319:22
[INFO] [stdout]     |
[INFO] [stdout] 319 |     pub tail: Option<(u64)>,
[INFO] [stdout]     |                      ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 319 -     pub tail: Option<(u64)>,
[INFO] [stdout] 319 +     pub tail: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:331:26
[INFO] [stdout]     |
[INFO] [stdout] 331 |     pub count_le: Option<(u64)>,
[INFO] [stdout]     |                          ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 331 -     pub count_le: Option<(u64)>,
[INFO] [stdout] 331 +     pub count_le: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/cli.rs:335:26
[INFO] [stdout]     |
[INFO] [stdout] 335 |     pub count_ge: Option<(u64)>,
[INFO] [stdout]     |                          ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 335 -     pub count_ge: Option<(u64)>,
[INFO] [stdout] 335 +     pub count_ge: Option<u64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/keysum.rs:104:16
[INFO] [stdout]     |
[INFO] [stdout] 104 |             if ( v.is_none()) {
[INFO] [stdout]     |                ^^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -             if ( v.is_none()) {
[INFO] [stdout] 104 +             if v.is_none() {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gettid`
[INFO] [stdout]   --> src/gen.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn gettid() -> usize {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `greek`
[INFO] [stdout]    --> src/gen.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub fn greek(v: f64) -> String {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `user_pause`
[INFO] [stdout]    --> src/gen.rs:207:8
[INFO] [stdout]     |
[INFO] [stdout] 207 | pub fn user_pause() {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/gen.rs:223:12
[INFO] [stdout]     |
[INFO] [stdout] 223 |     pub fn new() -> IoSlicerStatus {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fill_buff`
[INFO] [stdout]    --> src/gen.rs:241:4
[INFO] [stdout]     |
[INFO] [stdout] 241 | fn fill_buff(handle: &mut dyn Read, buff: &mut [u8]) -> Result<usize, std::io::Error> {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `io_thread_slicer`
[INFO] [stdout]    --> src/gen.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 | pub fn io_thread_slicer(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `caps_to_vec_strings`
[INFO] [stdout]    --> src/gen.rs:379:8
[INFO] [stdout]     |
[INFO] [stdout] 379 | pub fn caps_to_vec_strings(caps: &Captures_pcre2) -> Vec<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subs_from_path_buff`
[INFO] [stdout]    --> src/gen.rs:389:8
[INFO] [stdout]     |
[INFO] [stdout] 389 | pub fn subs_from_path_buff(path: &PathBuf, regex: &Option<Regex_pre2>) -> (bool, Vec<String>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `per_file_thread`
[INFO] [stdout]    --> src/gen.rs:402:8
[INFO] [stdout]     |
[INFO] [stdout] 402 | pub fn per_file_thread(
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `print_skipped`
[INFO] [stdout]    --> src/main.rs:496:21
[INFO] [stdout]     |
[INFO] [stdout] 496 |             let mut print_skipped = false; // for the stuff after head and before tail
[INFO] [stdout]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_print_skipped`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `inner_count`
[INFO] [stdout]    --> src/main.rs:843:30
[INFO] [stdout]     |
[INFO] [stdout] 843 |             'LINE_LOOP: for (inner_count, line) in slice.split(|c| *c == b'\n').enumerate() {
[INFO] [stdout]     |                              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_inner_count`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/main.rs:987:56
[INFO] [stdout]     |
[INFO] [stdout] 987 | ...                   csv::ErrorKind::Utf8 { ref err, pos } => {
[INFO] [stdout]     |                                              ^^^^^^^ help: try ignoring the field: `err: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `cnt_rec` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:999:25
[INFO] [stdout]     |
[INFO] [stdout] 999 |                 let mut cnt_rec = 0usize;
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_cnt_rec` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]     --> src/main.rs:1021:56
[INFO] [stdout]      |
[INFO] [stdout] 1021 | ...                   csv::ErrorKind::Utf8 { ref err, pos } => {
[INFO] [stdout]      |                                              ^^^^^^^ help: try ignoring the field: `err: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]     --> src/main.rs:1148:28
[INFO] [stdout]      |
[INFO] [stdout] 1148 |                 if let Err(e) = line {
[INFO] [stdout]      |                            ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ss`
[INFO] [stdout]    --> src/keysum.rs:167:53
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn schema_rec<T>(matrix: &mut Vec<Vec<String>>, ss: &mut String, line: &str, record: &T, rec_len: usize, map: &mut MyMap, cfg: &CliCf...
[INFO] [stdout]     |                                                     ^^ help: if this is intentional, prefix it with an underscore: `_ss`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/keysum.rs:167:70
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...Vec<String>>, ss: &mut String, line: &str, record: &T, rec_len: usize, map: &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,...
[INFO] [stdout]     |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]    --> src/keysum.rs:167:110
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...tr, record: &T, rec_len: usize, map: &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,usize)
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cfg`
[INFO] [stdout]    --> src/keysum.rs:167:127
[INFO] [stdout]     |
[INFO] [stdout] 167 | ...ec_len: usize, map: &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,usize)
[INFO] [stdout]     |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_cfg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rowcount`
[INFO] [stdout]    --> src/keysum.rs:167:141
[INFO] [stdout]     |
[INFO] [stdout] 167 | ... &mut MyMap, cfg: &CliCfg, rowcount: &mut usize) -> (usize,usize)
[INFO] [stdout]     |                               ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rowcount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `null_str`
[INFO] [stdout]    --> src/keysum.rs:140:17
[INFO] [stdout]     |
[INFO] [stdout] 140 |             let null_str = String::from("NULL");
[INFO] [stdout]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_null_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/keysum.rs:103:17
[INFO] [stdout]     |
[INFO] [stdout] 103 |             let mut v = self.matrix.get_mut(i);
[INFO] [stdout]     |                 ----^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/keysum.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     let mut lines_filtered = 0usize;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:496:17
[INFO] [stdout]     |
[INFO] [stdout] 496 |             let mut print_skipped = false; // for the stuff after head and before tail
[INFO] [stdout]     |                 ----^^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:922:9
[INFO] [stdout]     |
[INFO] [stdout] 922 |     let mut csv_builder = create_csv_builder(&cfg);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/main.rs:1215:13
[INFO] [stdout]      |
[INFO] [stdout] 1215 |         let mut b = slice[pos];
[INFO] [stdout]      |             ----^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:761:20
[INFO] [stdout]     |
[INFO] [stdout] 761 |             panic!(err_msg);
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 761 |             panic!("{}", err_msg);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:908:20
[INFO] [stdout]     |
[INFO] [stdout] 908 |             panic!(err_msg);
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 908 |             panic!("{}", err_msg);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/main.rs:1049:20
[INFO] [stdout]      |
[INFO] [stdout] 1049 |             panic!(err_msg);
[INFO] [stdout]      |                    ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1049 |             panic!("{}", err_msg);
[INFO] [stdout]      |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `ISO_8859` should have a snake case name
[INFO] [stdout]    --> src/cli.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |     pub ISO_8859: bool,
[INFO] [stdout]     |         ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `iso_8859`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 22.52s
[INFO] [stderr]   Executable unittests src/append.rs (/opt/rustwide/target/debug/deps/append-0847d4afeb63939e)
[INFO] [stderr]   Executable unittests src/create_very_large_file.rs (/opt/rustwide/target/debug/deps/create_very_large_file-8c85278ad08dccf8)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/gb-f7145b491c26a896)
[INFO] [stderr]   Executable unittests src/quick.rs (/opt/rustwide/target/debug/deps/quick-1f133f336a899eb6)
[INFO] [stderr]   Executable src/test.rs (/opt/rustwide/target/debug/deps/general_tests-76e286a2a494a5e1)
[INFO] running `Command { std: "docker" "inspect" "c77d0baed927f90771ac3e869626952f9584e0dc3da18d1cf4e7849b9a474617", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c77d0baed927f90771ac3e869626952f9584e0dc3da18d1cf4e7849b9a474617", kill_on_drop: false }`
[INFO] [stdout] c77d0baed927f90771ac3e869626952f9584e0dc3da18d1cf4e7849b9a474617