Dec 19 08:22:58.131 INFO checking souvik1997/fsbench against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 08:22:58.131 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 08:22:58.658 INFO [stdout] edad5bee72eb86e8d3bfc9b237b564265a38c2fa563549dd5f3fa0f954186743
Dec 19 08:22:58.660 INFO running `"docker" "start" "-a" "edad5bee72eb86e8d3bfc9b237b564265a38c2fa563549dd5f3fa0f954186743"`
Dec 19 08:23:01.498 INFO [stderr]     Checking serde v1.0.29
Dec 19 08:23:01.500 INFO [stderr]    Compiling num-traits v0.2.2
Dec 19 08:23:01.503 INFO [stderr]     Checking log v0.4.1
Dec 19 08:23:01.503 INFO [stderr]     Checking num-integer v0.1.36
Dec 19 08:23:01.552 INFO [stderr]     Checking num-complex v0.1.43
Dec 19 08:23:01.552 INFO [stderr]     Checking clap v2.29.2
Dec 19 08:23:01.564 INFO [stderr]    Compiling serde_derive_internals v0.20.0
Dec 19 08:23:01.564 INFO [stderr]     Checking rayon-core v1.4.0
Dec 19 08:23:03.478 INFO [stderr]     Checking num-bigint v0.1.43
Dec 19 08:23:03.781 INFO [stderr]     Checking num-iter v0.1.35
Dec 19 08:23:05.241 INFO [stderr]     Checking fern v0.5.2
Dec 19 08:23:06.117 INFO [stderr]     Checking rayon v1.0.0
Dec 19 08:23:15.352 INFO [stderr]     Checking num-rational v0.1.42
Dec 19 08:23:15.498 INFO [stderr]    Compiling num-derive v0.2.0
Dec 19 08:23:16.050 INFO [stderr]    Compiling serde_derive v1.0.29
Dec 19 08:23:19.059 INFO [stderr]     Checking num v0.1.42
Dec 19 08:23:19.838 INFO [stderr]     Checking chrono v0.4.0
Dec 19 08:23:37.750 INFO [stderr]     Checking serde_json v1.0.11
Dec 19 08:23:39.792 INFO [stderr]     Checking fsbench v0.1.0 (/opt/crater/workdir)
Dec 19 08:23:40.892 INFO [stderr] warning: unused import: `std::process::Command`
Dec 19 08:23:40.892 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:173:13
Dec 19 08:23:40.892 INFO [stderr]     |
Dec 19 08:23:40.892 INFO [stderr] 173 |         use std::process::Command;
Dec 19 08:23:40.892 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:40.892 INFO [stderr]     |
Dec 19 08:23:40.892 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 19 08:23:40.892 INFO [stderr] 
Dec 19 08:23:40.900 INFO [stderr] warning: unused import: `std::process::Command`
Dec 19 08:23:40.900 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:173:13
Dec 19 08:23:40.900 INFO [stderr]     |
Dec 19 08:23:40.900 INFO [stderr] 173 |         use std::process::Command;
Dec 19 08:23:40.900 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:40.900 INFO [stderr]     |
Dec 19 08:23:40.900 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 19 08:23:40.900 INFO [stderr] 
Dec 19 08:23:42.639 INFO [stderr] warning: unused variable: `split_string`
Dec 19 08:23:42.639 INFO [stderr]   --> src/fsbench/operation.rs:28:9
Dec 19 08:23:42.639 INFO [stderr]    |
Dec 19 08:23:42.639 INFO [stderr] 28 |     let split_string = vec![String::new()];
Dec 19 08:23:42.639 INFO [stderr]    |         ^^^^^^^^^^^^ help: consider using `_split_string` instead
Dec 19 08:23:42.639 INFO [stderr]    |
Dec 19 08:23:42.639 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 08:23:42.639 INFO [stderr] 
Dec 19 08:23:42.642 INFO [stderr] warning: variable `bytes` is assigned to, but never used
Dec 19 08:23:42.642 INFO [stderr]    --> src/fsbench/operation.rs:304:17
Dec 19 08:23:42.642 INFO [stderr]     |
Dec 19 08:23:42.642 INFO [stderr] 304 |         let mut bytes = 0;
Dec 19 08:23:42.642 INFO [stderr]     |                 ^^^^^
Dec 19 08:23:42.642 INFO [stderr]     |
Dec 19 08:23:42.642 INFO [stderr]     = note: consider using `_bytes` instead
Dec 19 08:23:42.642 INFO [stderr] 
Dec 19 08:23:42.688 INFO [stderr] warning: unused variable: `split_string`
Dec 19 08:23:42.689 INFO [stderr]   --> src/fsbench/operation.rs:28:9
Dec 19 08:23:42.689 INFO [stderr]    |
Dec 19 08:23:42.689 INFO [stderr] 28 |     let split_string = vec![String::new()];
Dec 19 08:23:42.689 INFO [stderr]    |         ^^^^^^^^^^^^ help: consider using `_split_string` instead
Dec 19 08:23:42.689 INFO [stderr]    |
Dec 19 08:23:42.689 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 08:23:42.689 INFO [stderr] 
Dec 19 08:23:42.689 INFO [stderr] warning: variable `bytes` is assigned to, but never used
Dec 19 08:23:42.689 INFO [stderr]    --> src/fsbench/operation.rs:304:17
Dec 19 08:23:42.689 INFO [stderr]     |
Dec 19 08:23:42.689 INFO [stderr] 304 |         let mut bytes = 0;
Dec 19 08:23:42.689 INFO [stderr]     |                 ^^^^^
Dec 19 08:23:42.689 INFO [stderr]     |
Dec 19 08:23:42.689 INFO [stderr]     = note: consider using `_bytes` instead
Dec 19 08:23:42.689 INFO [stderr] 
Dec 19 08:23:43.132 INFO [stderr] warning: constant item is never used: `SECTOR_SIZE`
Dec 19 08:23:43.132 INFO [stderr]  --> src/fsbench/blktrace/trace.rs:9:1
Dec 19 08:23:43.132 INFO [stderr]   |
Dec 19 08:23:43.132 INFO [stderr] 9 | pub const SECTOR_SIZE: usize = 512;
Dec 19 08:23:43.132 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.132 INFO [stderr]   |
Dec 19 08:23:43.132 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 08:23:43.132 INFO [stderr] 
Dec 19 08:23:43.133 INFO [stderr] warning: field is never used: `elapsed`
Dec 19 08:23:43.133 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:147:5
Dec 19 08:23:43.133 INFO [stderr]     |
Dec 19 08:23:43.133 INFO [stderr] 147 |     elapsed: Duration,
Dec 19 08:23:43.133 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.133 INFO [stderr] 
Dec 19 08:23:43.133 INFO [stderr] warning: method is never used: `total_duration`
Dec 19 08:23:43.133 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:243:5
Dec 19 08:23:43.133 INFO [stderr]     |
Dec 19 08:23:43.133 INFO [stderr] 243 |     pub fn total_duration(&self) -> Duration {
Dec 19 08:23:43.133 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.134 INFO [stderr] 
Dec 19 08:23:43.134 INFO [stderr] warning: struct is never constructed: `Read`
Dec 19 08:23:43.134 INFO [stderr]    --> src/fsbench/operation.rs:160:1
Dec 19 08:23:43.134 INFO [stderr]     |
Dec 19 08:23:43.134 INFO [stderr] 160 | pub struct Read {
Dec 19 08:23:43.134 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 19 08:23:43.134 INFO [stderr] 
Dec 19 08:23:43.134 INFO [stderr] warning: method is never used: `new`
Dec 19 08:23:43.134 INFO [stderr]    --> src/fsbench/operation.rs:165:5
Dec 19 08:23:43.134 INFO [stderr]     |
Dec 19 08:23:43.134 INFO [stderr] 165 |     pub fn new() -> Read {
Dec 19 08:23:43.134 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.134 INFO [stderr] 
Dec 19 08:23:43.134 INFO [stderr] warning: method is never used: `run`
Dec 19 08:23:43.134 INFO [stderr]    --> src/fsbench/operation.rs:171:5
Dec 19 08:23:43.134 INFO [stderr]     |
Dec 19 08:23:43.134 INFO [stderr] 171 |     pub fn run(&mut self, fd: RawFd, buf: &mut [u8]) -> nix::Result<usize> {
Dec 19 08:23:43.134 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.134 INFO [stderr] 
Dec 19 08:23:43.141 INFO [stderr] warning: struct is never constructed: `Write`
Dec 19 08:23:43.141 INFO [stderr]    --> src/fsbench/operation.rs:192:1
Dec 19 08:23:43.141 INFO [stderr]     |
Dec 19 08:23:43.141 INFO [stderr] 192 | pub struct Write {
Dec 19 08:23:43.141 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 19 08:23:43.141 INFO [stderr] 
Dec 19 08:23:43.141 INFO [stderr] warning: method is never used: `new`
Dec 19 08:23:43.141 INFO [stderr]    --> src/fsbench/operation.rs:197:5
Dec 19 08:23:43.141 INFO [stderr]     |
Dec 19 08:23:43.141 INFO [stderr] 197 |     pub fn new() -> Write {
Dec 19 08:23:43.141 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.141 INFO [stderr] 
Dec 19 08:23:43.141 INFO [stderr] warning: method is never used: `run`
Dec 19 08:23:43.141 INFO [stderr]    --> src/fsbench/operation.rs:203:5
Dec 19 08:23:43.141 INFO [stderr]     |
Dec 19 08:23:43.141 INFO [stderr] 203 |     pub fn run(&mut self, fd: RawFd, buf: &[u8]) -> nix::Result<usize> {
Dec 19 08:23:43.141 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.141 INFO [stderr] 
Dec 19 08:23:43.141 INFO [stderr] warning: method is never used: `ops_per_second`
Dec 19 08:23:43.141 INFO [stderr]   --> src/fsbench/statistics.rs:42:5
Dec 19 08:23:43.141 INFO [stderr]    |
Dec 19 08:23:43.141 INFO [stderr] 42 |     pub fn ops_per_second(&self) -> f64 {
Dec 19 08:23:43.141 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.141 INFO [stderr] 
Dec 19 08:23:43.143 INFO [stderr] warning: the feature `duration_extras` has been stable since 1.27.0 and no longer requires an attribute to enable
Dec 19 08:23:43.143 INFO [stderr]  --> src/main.rs:1:12
Dec 19 08:23:43.143 INFO [stderr]   |
Dec 19 08:23:43.143 INFO [stderr] 1 | #![feature(duration_extras)]
Dec 19 08:23:43.143 INFO [stderr]   |            ^^^^^^^^^^^^^^^
Dec 19 08:23:43.143 INFO [stderr]   |
Dec 19 08:23:43.143 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 08:23:43.143 INFO [stderr] 
Dec 19 08:23:43.200 INFO [stderr] warning: constant item is never used: `SECTOR_SIZE`
Dec 19 08:23:43.200 INFO [stderr]  --> src/fsbench/blktrace/trace.rs:9:1
Dec 19 08:23:43.201 INFO [stderr]   |
Dec 19 08:23:43.201 INFO [stderr] 9 | pub const SECTOR_SIZE: usize = 512;
Dec 19 08:23:43.201 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.201 INFO [stderr]   |
Dec 19 08:23:43.201 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 08:23:43.201 INFO [stderr] 
Dec 19 08:23:43.202 INFO [stderr] warning: field is never used: `elapsed`
Dec 19 08:23:43.202 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:147:5
Dec 19 08:23:43.202 INFO [stderr]     |
Dec 19 08:23:43.202 INFO [stderr] 147 |     elapsed: Duration,
Dec 19 08:23:43.202 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.202 INFO [stderr] 
Dec 19 08:23:43.203 INFO [stderr] warning: method is never used: `total_duration`
Dec 19 08:23:43.203 INFO [stderr]    --> src/fsbench/blktrace/trace.rs:243:5
Dec 19 08:23:43.203 INFO [stderr]     |
Dec 19 08:23:43.203 INFO [stderr] 243 |     pub fn total_duration(&self) -> Duration {
Dec 19 08:23:43.203 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.203 INFO [stderr] 
Dec 19 08:23:43.203 INFO [stderr] warning: struct is never constructed: `Read`
Dec 19 08:23:43.203 INFO [stderr]    --> src/fsbench/operation.rs:160:1
Dec 19 08:23:43.203 INFO [stderr]     |
Dec 19 08:23:43.203 INFO [stderr] 160 | pub struct Read {
Dec 19 08:23:43.203 INFO [stderr]     | ^^^^^^^^^^^^^^^
Dec 19 08:23:43.203 INFO [stderr] 
Dec 19 08:23:43.203 INFO [stderr] warning: method is never used: `new`
Dec 19 08:23:43.203 INFO [stderr]    --> src/fsbench/operation.rs:165:5
Dec 19 08:23:43.203 INFO [stderr]     |
Dec 19 08:23:43.203 INFO [stderr] 165 |     pub fn new() -> Read {
Dec 19 08:23:43.203 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.203 INFO [stderr] 
Dec 19 08:23:43.203 INFO [stderr] warning: method is never used: `run`
Dec 19 08:23:43.203 INFO [stderr]    --> src/fsbench/operation.rs:171:5
Dec 19 08:23:43.203 INFO [stderr]     |
Dec 19 08:23:43.203 INFO [stderr] 171 |     pub fn run(&mut self, fd: RawFd, buf: &mut [u8]) -> nix::Result<usize> {
Dec 19 08:23:43.203 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.204 INFO [stderr] 
Dec 19 08:23:43.204 INFO [stderr] warning: struct is never constructed: `Write`
Dec 19 08:23:43.204 INFO [stderr]    --> src/fsbench/operation.rs:192:1
Dec 19 08:23:43.204 INFO [stderr]     |
Dec 19 08:23:43.204 INFO [stderr] 192 | pub struct Write {
Dec 19 08:23:43.204 INFO [stderr]     | ^^^^^^^^^^^^^^^^
Dec 19 08:23:43.204 INFO [stderr] 
Dec 19 08:23:43.204 INFO [stderr] warning: method is never used: `new`
Dec 19 08:23:43.204 INFO [stderr]    --> src/fsbench/operation.rs:197:5
Dec 19 08:23:43.204 INFO [stderr]     |
Dec 19 08:23:43.204 INFO [stderr] 197 |     pub fn new() -> Write {
Dec 19 08:23:43.204 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.204 INFO [stderr] 
Dec 19 08:23:43.204 INFO [stderr] warning: method is never used: `run`
Dec 19 08:23:43.204 INFO [stderr]    --> src/fsbench/operation.rs:203:5
Dec 19 08:23:43.204 INFO [stderr]     |
Dec 19 08:23:43.204 INFO [stderr] 203 |     pub fn run(&mut self, fd: RawFd, buf: &[u8]) -> nix::Result<usize> {
Dec 19 08:23:43.204 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.204 INFO [stderr] 
Dec 19 08:23:43.206 INFO [stderr] warning: method is never used: `ops_per_second`
Dec 19 08:23:43.206 INFO [stderr]   --> src/fsbench/statistics.rs:42:5
Dec 19 08:23:43.206 INFO [stderr]    |
Dec 19 08:23:43.206 INFO [stderr] 42 |     pub fn ops_per_second(&self) -> f64 {
Dec 19 08:23:43.206 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 08:23:43.206 INFO [stderr] 
Dec 19 08:23:43.206 INFO [stderr] warning: the feature `duration_extras` has been stable since 1.27.0 and no longer requires an attribute to enable
Dec 19 08:23:43.207 INFO [stderr]  --> src/main.rs:1:12
Dec 19 08:23:43.207 INFO [stderr]   |
Dec 19 08:23:43.207 INFO [stderr] 1 | #![feature(duration_extras)]
Dec 19 08:23:43.207 INFO [stderr]   |            ^^^^^^^^^^^^^^^
Dec 19 08:23:43.207 INFO [stderr]   |
Dec 19 08:23:43.212 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 08:23:43.212 INFO [stderr] 
Dec 19 08:23:43.275 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.98s
Dec 19 08:23:44.310 INFO running `"docker" "inspect" "edad5bee72eb86e8d3bfc9b237b564265a38c2fa563549dd5f3fa0f954186743"`
Dec 19 08:23:44.544 INFO running `"docker" "rm" "-f" "edad5bee72eb86e8d3bfc9b237b564265a38c2fa563549dd5f3fa0f954186743"`
Dec 19 08:23:44.896 INFO [stdout] edad5bee72eb86e8d3bfc9b237b564265a38c2fa563549dd5f3fa0f954186743