[INFO] crate csv-groupby 0.6.2 is already in cache
[INFO] checking csv-groupby-0.6.2 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate csv-groupby 0.6.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate csv-groupby 0.6.2 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate csv-groupby 0.6.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate csv-groupby 0.6.2
[INFO] tweaked toml for crates.io crate csv-groupby 0.6.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate csv-groupby 0.6.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6b7123cb4411cdb558355f2e522b2592ea6f35e38ab603d2664c65d8c77c7a6a
[INFO] running `"docker" "start" "-a" "6b7123cb4411cdb558355f2e522b2592ea6f35e38ab603d2664c65d8c77c7a6a"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking cfg-if v0.1.10
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[INFO] [stderr]    Compiling winapi v0.3.8
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]    Compiling csv-groupby v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking itoa v0.4.4
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[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:6:13
[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: 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:6:13
[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: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/main.rs:358:9
[INFO] [stderr]     |
[INFO] [stderr] 358 |         (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: `distro_format`
[INFO] [stderr]   --> src/gen.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | 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:85:4
[INFO] [stderr]    |
[INFO] [stderr] 85 | 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:99:4
[INFO] [stderr]    |
[INFO] [stderr] 99 | 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:123:8
[INFO] [stderr]     |
[INFO] [stderr] 123 | 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:150:8
[INFO] [stderr]     |
[INFO] [stderr] 150 | pub fn greek(v: f64) -> String {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `user_pause`
[INFO] [stderr]    --> src/gen.rs:193:8
[INFO] [stderr]     |
[INFO] [stderr] 193 | pub fn user_pause() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/gen.rs:209:5
[INFO] [stderr]     |
[INFO] [stderr] 209 |     pub fn new() -> IoSlicerStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `io_thread_slicer`
[INFO] [stderr]    --> src/gen.rs:227:8
[INFO] [stderr]     |
[INFO] [stderr] 227 | 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:342:8
[INFO] [stderr]     |
[INFO] [stderr] 342 | 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:352:8
[INFO] [stderr]     |
[INFO] [stderr] 352 | 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:365:8
[INFO] [stderr]     |
[INFO] [stderr] 365 | pub fn per_file_thread(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `greek`
[INFO] [stderr]    --> src/gen.rs:150:8
[INFO] [stderr]     |
[INFO] [stderr] 150 | 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:193:8
[INFO] [stderr]     |
[INFO] [stderr] 193 | pub fn user_pause() {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/gen.rs:209:5
[INFO] [stderr]     |
[INFO] [stderr] 209 |     pub fn new() -> IoSlicerStatus {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `io_thread_slicer`
[INFO] [stderr]    --> src/gen.rs:227:8
[INFO] [stderr]     |
[INFO] [stderr] 227 | 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:342:8
[INFO] [stderr]     |
[INFO] [stderr] 342 | 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:352:8
[INFO] [stderr]     |
[INFO] [stderr] 352 | 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:365:8
[INFO] [stderr]     |
[INFO] [stderr] 365 | pub fn per_file_thread(
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/main.rs:358:9
[INFO] [stderr]     |
[INFO] [stderr] 358 |         (v + 1.into())
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 19s
[INFO] running `"docker" "inspect" "6b7123cb4411cdb558355f2e522b2592ea6f35e38ab603d2664c65d8c77c7a6a"`
[INFO] running `"docker" "rm" "-f" "6b7123cb4411cdb558355f2e522b2592ea6f35e38ab603d2664c65d8c77c7a6a"`
[INFO] [stdout] 6b7123cb4411cdb558355f2e522b2592ea6f35e38ab603d2664c65d8c77c7a6a
