Dec 17 14:58:12.024 INFO checking souvik1997/fsbench against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 14:58:12.024 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/souvik1997/fsbench:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 14:58:12.551 INFO [stdout] a48ebbf1ea4448ccd072e5729deaf7c9d1cf07e597dd0bcb12a7ae00c64ccdb1
Dec 17 14:58:12.553 INFO running `"docker" "start" "-a" "a48ebbf1ea4448ccd072e5729deaf7c9d1cf07e597dd0bcb12a7ae00c64ccdb1"`
Dec 17 14:58:15.448 INFO [stderr]    Compiling num-traits v0.2.2
Dec 17 14:58:15.451 INFO [stderr]     Checking log v0.4.1
Dec 17 14:58:15.451 INFO [stderr]     Checking num-complex v0.1.43
Dec 17 14:58:15.451 INFO [stderr]     Checking serde_json v1.0.11
Dec 17 14:58:15.451 INFO [stderr]     Checking num-bigint v0.1.43
Dec 17 14:58:15.451 INFO [stderr]     Checking crossbeam-epoch v0.3.0
Dec 17 14:58:16.394 INFO [stderr]     Checking fern v0.5.2
Dec 17 14:58:18.724 INFO [stderr]     Checking crossbeam-deque v0.2.0
Dec 17 14:58:19.447 INFO [stderr]     Checking rayon-core v1.4.0
Dec 17 14:58:22.186 INFO [stderr]    Compiling num-derive v0.2.0
Dec 17 14:58:22.481 INFO [stderr]     Checking rayon v1.0.0
Dec 17 14:58:24.428 INFO [stderr]     Checking num-rational v0.1.42
Dec 17 14:58:26.210 INFO [stderr]     Checking num v0.1.42
Dec 17 14:58:26.560 INFO [stderr]     Checking chrono v0.4.0
Dec 17 14:58:30.119 INFO [stderr]     Checking fsbench v0.1.0 (/opt/crater/workdir)
Dec 17 14:58:31.253 INFO [stderr] warning: unused import: `std::process::Command`
Dec 17 14:58:31.253 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:173:13
Dec 17 14:58:31.253 INFO [stderr]     |
Dec 17 14:58:31.253 INFO [stderr] 173 |         use std::process::Command;
Dec 17 14:58:31.253 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:31.253 INFO [stderr]     |
Dec 17 14:58:31.253 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 17 14:58:31.253 INFO [stderr] 
Dec 17 14:58:31.287 INFO [stderr] warning: unused import: `std::process::Command`
Dec 17 14:58:31.287 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:173:13
Dec 17 14:58:31.287 INFO [stderr]     |
Dec 17 14:58:31.287 INFO [stderr] 173 |         use std::process::Command;
Dec 17 14:58:31.287 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:31.287 INFO [stderr]     |
Dec 17 14:58:31.287 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 17 14:58:31.287 INFO [stderr] 
Dec 17 14:58:32.856 INFO [stderr] warning: unused variable: `split_string`
Dec 17 14:58:32.857 INFO [stderr]   --> src/fsbench/operation.rs:28:9
Dec 17 14:58:32.857 INFO [stderr]    |
Dec 17 14:58:32.857 INFO [stderr] 28 |     let split_string = vec![String::new()];
Dec 17 14:58:32.858 INFO [stderr]    |         ^^^^^^^^^^^^ help: consider using `_split_string` instead
Dec 17 14:58:32.858 INFO [stderr]    |
Dec 17 14:58:32.858 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:58:32.859 INFO [stderr] 
Dec 17 14:58:32.862 INFO [stderr] warning: variable `bytes` is assigned to, but never used
Dec 17 14:58:32.862 INFO [stderr]    --> src/fsbench/operation.rs:304:17
Dec 17 14:58:32.862 INFO [stderr]     |
Dec 17 14:58:32.862 INFO [stderr] 304 |         let mut bytes = 0;
Dec 17 14:58:32.863 INFO [stderr]     |                 ^^^^^
Dec 17 14:58:32.863 INFO [stderr]     |
Dec 17 14:58:32.863 INFO [stderr]     = note: consider using `_bytes` instead
Dec 17 14:58:32.864 INFO [stderr] 
Dec 17 14:58:32.924 INFO [stderr] warning: unused variable: `split_string`
Dec 17 14:58:32.925 INFO [stderr]   --> src/fsbench/operation.rs:28:9
Dec 17 14:58:32.925 INFO [stderr]    |
Dec 17 14:58:32.925 INFO [stderr] 28 |     let split_string = vec![String::new()];
Dec 17 14:58:32.925 INFO [stderr]    |         ^^^^^^^^^^^^ help: consider using `_split_string` instead
Dec 17 14:58:32.926 INFO [stderr]    |
Dec 17 14:58:32.926 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 14:58:32.926 INFO [stderr] 
Dec 17 14:58:32.930 INFO [stderr] warning: variable `bytes` is assigned to, but never used
Dec 17 14:58:32.930 INFO [stderr]    --> src/fsbench/operation.rs:304:17
Dec 17 14:58:32.931 INFO [stderr]     |
Dec 17 14:58:32.931 INFO [stderr] 304 |         let mut bytes = 0;
Dec 17 14:58:32.931 INFO [stderr]     |                 ^^^^^
Dec 17 14:58:32.931 INFO [stderr]     |
Dec 17 14:58:32.932 INFO [stderr]     = note: consider using `_bytes` instead
Dec 17 14:58:32.932 INFO [stderr] 
Dec 17 14:58:33.432 INFO [stderr] warning: constant item is never used: `SECTOR_SIZE`
Dec 17 14:58:33.433 INFO [stderr]  --> src/fsbench/blktrace/trace.rs:9:1
Dec 17 14:58:33.433 INFO [stderr]   |
Dec 17 14:58:33.433 INFO [stderr] 9 | pub const SECTOR_SIZE: usize = 512;
Dec 17 14:58:33.433 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.434 INFO [stderr]   |
Dec 17 14:58:33.434 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 14:58:33.434 INFO [stderr] 
Dec 17 14:58:33.435 INFO [stderr] warning: field is never used: `elapsed`
Dec 17 14:58:33.435 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:147:5
Dec 17 14:58:33.436 INFO [stderr]     |
Dec 17 14:58:33.436 INFO [stderr] 147 |     elapsed: Duration,
Dec 17 14:58:33.436 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.436 INFO [stderr] 
Dec 17 14:58:33.437 INFO [stderr] warning: method is never used: `total_duration`
Dec 17 14:58:33.437 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:243:5
Dec 17 14:58:33.438 INFO [stderr]     |
Dec 17 14:58:33.438 INFO [stderr] 243 |     pub fn total_duration(&self) -> Duration {
Dec 17 14:58:33.438 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.438 INFO [stderr] 
Dec 17 14:58:33.444 INFO [stderr] warning: struct is never constructed: `Read`
Dec 17 14:58:33.444 INFO [stderr]    --> src/fsbench/operation.rs:160:1
Dec 17 14:58:33.445 INFO [stderr]     |
Dec 17 14:58:33.445 INFO [stderr] 160 | pub struct Read {
Dec 17 14:58:33.445 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 17 14:58:33.445 INFO [stderr] 
Dec 17 14:58:33.446 INFO [stderr] warning: method is never used: `new`
Dec 17 14:58:33.446 INFO [stderr]    --> src/fsbench/operation.rs:165:5
Dec 17 14:58:33.446 INFO [stderr]     |
Dec 17 14:58:33.447 INFO [stderr] 165 |     pub fn new() -> Read {
Dec 17 14:58:33.447 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.447 INFO [stderr] 
Dec 17 14:58:33.447 INFO [stderr] warning: method is never used: `run`
Dec 17 14:58:33.448 INFO [stderr]    --> src/fsbench/operation.rs:171:5
Dec 17 14:58:33.448 INFO [stderr]     |
Dec 17 14:58:33.448 INFO [stderr] 171 |     pub fn run(&mut self, fd: RawFd, buf: &mut [u8]) -> nix::Result<usize> {
Dec 17 14:58:33.449 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.449 INFO [stderr] 
Dec 17 14:58:33.449 INFO [stderr] warning: struct is never constructed: `Write`
Dec 17 14:58:33.450 INFO [stderr]    --> src/fsbench/operation.rs:192:1
Dec 17 14:58:33.450 INFO [stderr]     |
Dec 17 14:58:33.450 INFO [stderr] 192 | pub struct Write {
Dec 17 14:58:33.450 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 14:58:33.451 INFO [stderr] 
Dec 17 14:58:33.451 INFO [stderr] warning: method is never used: `new`
Dec 17 14:58:33.451 INFO [stderr]    --> src/fsbench/operation.rs:197:5
Dec 17 14:58:33.452 INFO [stderr]     |
Dec 17 14:58:33.452 INFO [stderr] 197 |     pub fn new() -> Write {
Dec 17 14:58:33.452 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.453 INFO [stderr] 
Dec 17 14:58:33.453 INFO [stderr] warning: method is never used: `run`
Dec 17 14:58:33.453 INFO [stderr]    --> src/fsbench/operation.rs:203:5
Dec 17 14:58:33.454 INFO [stderr]     |
Dec 17 14:58:33.454 INFO [stderr] 203 |     pub fn run(&mut self, fd: RawFd, buf: &[u8]) -> nix::Result<usize> {
Dec 17 14:58:33.454 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.454 INFO [stderr] 
Dec 17 14:58:33.455 INFO [stderr] warning: method is never used: `ops_per_second`
Dec 17 14:58:33.455 INFO [stderr]   --> src/fsbench/statistics.rs:42:5
Dec 17 14:58:33.455 INFO [stderr]    |
Dec 17 14:58:33.456 INFO [stderr] 42 |     pub fn ops_per_second(&self) -> f64 {
Dec 17 14:58:33.456 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.456 INFO [stderr] 
Dec 17 14:58:33.472 INFO [stderr] warning: the feature `duration_extras` has been stable since 1.27.0 and no longer requires an attribute to enable
Dec 17 14:58:33.473 INFO [stderr]  --> src/main.rs:1:12
Dec 17 14:58:33.473 INFO [stderr]   |
Dec 17 14:58:33.473 INFO [stderr] 1 | #![feature(duration_extras)]
Dec 17 14:58:33.474 INFO [stderr]   |            ^^^^^^^^^^^^^^^
Dec 17 14:58:33.474 INFO [stderr]   |
Dec 17 14:58:33.474 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 14:58:33.474 INFO [stderr] 
Dec 17 14:58:33.600 INFO [stderr] warning: constant item is never used: `SECTOR_SIZE`
Dec 17 14:58:33.600 INFO [stderr]  --> src/fsbench/blktrace/trace.rs:9:1
Dec 17 14:58:33.600 INFO [stderr]   |
Dec 17 14:58:33.600 INFO [stderr] 9 | pub const SECTOR_SIZE: usize = 512;
Dec 17 14:58:33.600 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.600 INFO [stderr]   |
Dec 17 14:58:33.600 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 14:58:33.600 INFO [stderr] 
Dec 17 14:58:33.600 INFO [stderr] warning: field is never used: `elapsed`
Dec 17 14:58:33.600 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:147:5
Dec 17 14:58:33.600 INFO [stderr]     |
Dec 17 14:58:33.600 INFO [stderr] 147 |     elapsed: Duration,
Dec 17 14:58:33.600 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.600 INFO [stderr] 
Dec 17 14:58:33.600 INFO [stderr] warning: method is never used: `total_duration`
Dec 17 14:58:33.600 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:243:5
Dec 17 14:58:33.600 INFO [stderr]     |
Dec 17 14:58:33.600 INFO [stderr] 243 |     pub fn total_duration(&self) -> Duration {
Dec 17 14:58:33.600 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.600 INFO [stderr] 
Dec 17 14:58:33.600 INFO [stderr] warning: struct is never constructed: `Read`
Dec 17 14:58:33.600 INFO [stderr]    --> src/fsbench/operation.rs:160:1
Dec 17 14:58:33.600 INFO [stderr]     |
Dec 17 14:58:33.600 INFO [stderr] 160 | pub struct Read {
Dec 17 14:58:33.600 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 17 14:58:33.600 INFO [stderr] 
Dec 17 14:58:33.601 INFO [stderr] warning: method is never used: `new`
Dec 17 14:58:33.601 INFO [stderr]    --> src/fsbench/operation.rs:165:5
Dec 17 14:58:33.601 INFO [stderr]     |
Dec 17 14:58:33.601 INFO [stderr] 165 |     pub fn new() -> Read {
Dec 17 14:58:33.601 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.601 INFO [stderr] 
Dec 17 14:58:33.601 INFO [stderr] warning: method is never used: `run`
Dec 17 14:58:33.601 INFO [stderr]    --> src/fsbench/operation.rs:171:5
Dec 17 14:58:33.601 INFO [stderr]     |
Dec 17 14:58:33.601 INFO [stderr] 171 |     pub fn run(&mut self, fd: RawFd, buf: &mut [u8]) -> nix::Result<usize> {
Dec 17 14:58:33.601 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.601 INFO [stderr] 
Dec 17 14:58:33.601 INFO [stderr] warning: struct is never constructed: `Write`
Dec 17 14:58:33.601 INFO [stderr]    --> src/fsbench/operation.rs:192:1
Dec 17 14:58:33.601 INFO [stderr]     |
Dec 17 14:58:33.601 INFO [stderr] 192 | pub struct Write {
Dec 17 14:58:33.601 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 17 14:58:33.601 INFO [stderr] 
Dec 17 14:58:33.601 INFO [stderr] warning: method is never used: `new`
Dec 17 14:58:33.601 INFO [stderr]    --> src/fsbench/operation.rs:197:5
Dec 17 14:58:33.601 INFO [stderr]     |
Dec 17 14:58:33.601 INFO [stderr] 197 |     pub fn new() -> Write {
Dec 17 14:58:33.601 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.601 INFO [stderr] 
Dec 17 14:58:33.601 INFO [stderr] warning: method is never used: `run`
Dec 17 14:58:33.601 INFO [stderr]    --> src/fsbench/operation.rs:203:5
Dec 17 14:58:33.601 INFO [stderr]     |
Dec 17 14:58:33.601 INFO [stderr] 203 |     pub fn run(&mut self, fd: RawFd, buf: &[u8]) -> nix::Result<usize> {
Dec 17 14:58:33.601 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.601 INFO [stderr] 
Dec 17 14:58:33.601 INFO [stderr] warning: method is never used: `ops_per_second`
Dec 17 14:58:33.601 INFO [stderr]   --> src/fsbench/statistics.rs:42:5
Dec 17 14:58:33.601 INFO [stderr]    |
Dec 17 14:58:33.601 INFO [stderr] 42 |     pub fn ops_per_second(&self) -> f64 {
Dec 17 14:58:33.601 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 14:58:33.601 INFO [stderr] 
Dec 17 14:58:33.602 INFO [stderr] warning: the feature `duration_extras` has been stable since 1.27.0 and no longer requires an attribute to enable
Dec 17 14:58:33.602 INFO [stderr]  --> src/main.rs:1:12
Dec 17 14:58:33.602 INFO [stderr]   |
Dec 17 14:58:33.602 INFO [stderr] 1 | #![feature(duration_extras)]
Dec 17 14:58:33.602 INFO [stderr]   |            ^^^^^^^^^^^^^^^
Dec 17 14:58:33.602 INFO [stderr]   |
Dec 17 14:58:33.602 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 17 14:58:33.602 INFO [stderr] 
Dec 17 14:58:33.694 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.48s
Dec 17 14:58:35.184 INFO running `"docker" "inspect" "a48ebbf1ea4448ccd072e5729deaf7c9d1cf07e597dd0bcb12a7ae00c64ccdb1"`
Dec 17 14:58:35.502 INFO running `"docker" "rm" "-f" "a48ebbf1ea4448ccd072e5729deaf7c9d1cf07e597dd0bcb12a7ae00c64ccdb1"`
Dec 17 14:58:35.856 INFO [stdout] a48ebbf1ea4448ccd072e5729deaf7c9d1cf07e597dd0bcb12a7ae00c64ccdb1