[INFO] crate fast_log 1.0.3 is already in cache
[INFO] checking fast_log-1.0.3 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate fast_log 1.0.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate fast_log 1.0.3 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fast_log 1.0.3
[INFO] finished tweaking crates.io crate fast_log 1.0.3
[INFO] tweaked toml for crates.io crate fast_log 1.0.3 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] b60a26f22186fd9be52b92851f4eef8ee6bf14a40ecc40cb41033cc74ed08397
[INFO] running `"docker" "start" "-a" "b60a26f22186fd9be52b92851f4eef8ee6bf14a40ecc40cb41033cc74ed08397"`
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking tokio v0.2.17
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking fast_log v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stderr]  --> src/log.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/log.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stderr]  --> src/log.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stderr]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/log.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/log.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::intrinsics::write_bytes`
[INFO] [stderr]  --> src/log.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::intrinsics::write_bytes;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `MutexGuard`, `Mutex`
[INFO] [stderr]  --> src/log.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::sync::{Mutex, MutexGuard};
[INFO] [stderr]   |                 ^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Utc`
[INFO] [stderr]   --> src/log.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 | use chrono::{DateTime, Local, Utc};
[INFO] [stderr]    |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `error`, `warn`
[INFO] [stderr]   --> src/log.rs:15:11
[INFO] [stderr]    |
[INFO] [stderr] 15 | use log::{error, info, warn};
[INFO] [stderr]    |           ^^^^^        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SetLoggerError`
[INFO] [stderr]   --> src/log.rs:16:49
[INFO] [stderr]    |
[INFO] [stderr] 16 | use log::{Level, LevelFilter, Metadata, Record, SetLoggerError};
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/log.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error`
[INFO] [stderr]  --> src/error.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{error, fmt};
[INFO] [stderr]   |           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::intrinsics::write_bytes`
[INFO] [stderr]  --> src/log.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::intrinsics::write_bytes;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `MutexGuard`, `Mutex`
[INFO] [stderr]  --> src/log.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::sync::{Mutex, MutexGuard};
[INFO] [stderr]   |                 ^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]   --> src/log.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::thread::sleep;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Duration`, `SystemTime`
[INFO] [stderr]   --> src/log.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::time::{Duration, SystemTime};
[INFO] [stderr]    |                 ^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Utc`
[INFO] [stderr]   --> src/log.rs:14:31
[INFO] [stderr]    |
[INFO] [stderr] 14 | use chrono::{DateTime, Local, Utc};
[INFO] [stderr]    |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `error`, `info`, `warn`
[INFO] [stderr]   --> src/log.rs:15:11
[INFO] [stderr]    |
[INFO] [stderr] 15 | use log::{error, info, warn};
[INFO] [stderr]    |           ^^^^^  ^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SetLoggerError`
[INFO] [stderr]   --> src/log.rs:16:49
[INFO] [stderr]    |
[INFO] [stderr] 16 | use log::{Level, LevelFilter, Metadata, Record, SetLoggerError};
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::time_util`
[INFO] [stderr]   --> src/log.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use crate::time_util;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error`
[INFO] [stderr]  --> src/error.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{error, fmt};
[INFO] [stderr]   |           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/log.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let mut file = open_file(log_file_path).await;
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/log.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 152 |     let mut file = tokio::fs::OpenOptions::new().write(true).create(true).open(log_file_path).await?;
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/log.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let mut file = open_file(log_file_path).await;
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/log.rs:152:9
[INFO] [stderr]     |
[INFO] [stderr] 152 |     let mut file = tokio::fs::OpenOptions::new().write(true).create(true).open(log_file_path).await?;
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/log.rs:173:9
[INFO] [stderr]     |
[INFO] [stderr] 173 |     for i in 0..total {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/log.rs:189:9
[INFO] [stderr]     |
[INFO] [stderr] 189 |     for i in 0..total {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/time_util.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut time = SystemTime::now().duration_since(start).unwrap();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/time_util.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut time = SystemTime::now().duration_since(start).unwrap();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `e`
[INFO] [stderr]   --> src/error.rs:69:4
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn e() -> Result<String, LogError> {
[INFO] [stderr]    |    ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/log.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |         self.sender.send(arg);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |                 file.write(s.as_bytes());
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:105:17
[INFO] [stderr]     |
[INFO] [stderr] 105 |                 file.flush();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:136:17
[INFO] [stderr]     |
[INFO] [stderr] 136 |                 file.write_all(s.as_bytes()).await;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:137:17
[INFO] [stderr]     |
[INFO] [stderr] 137 |                 file.sync_data().await;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/time_util.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut time = SystemTime::now().duration_since(start).unwrap();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/time_util.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut time = SystemTime::now().duration_since(start).unwrap();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/log.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |         self.sender.send(arg);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |                 file.write(s.as_bytes());
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:105:17
[INFO] [stderr]     |
[INFO] [stderr] 105 |                 file.flush();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:136:17
[INFO] [stderr]     |
[INFO] [stderr] 136 |                 file.write_all(s.as_bytes()).await;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:137:17
[INFO] [stderr]     |
[INFO] [stderr] 137 |                 file.sync_data().await;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:159:5
[INFO] [stderr]     |
[INFO] [stderr] 159 |     init_log("requests.log");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:169:5
[INFO] [stderr]     |
[INFO] [stderr] 169 |     init_log("requests.log");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/log.rs:185:5
[INFO] [stderr]     |
[INFO] [stderr] 185 |     init_async_log("requests.log").await;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.93s
[INFO] running `"docker" "inspect" "b60a26f22186fd9be52b92851f4eef8ee6bf14a40ecc40cb41033cc74ed08397"`
[INFO] running `"docker" "rm" "-f" "b60a26f22186fd9be52b92851f4eef8ee6bf14a40ecc40cb41033cc74ed08397"`
[INFO] [stdout] b60a26f22186fd9be52b92851f4eef8ee6bf14a40ecc40cb41033cc74ed08397
