[INFO] cloning repository https://github.com/mobiltracker/rs-async-log-watcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mobiltracker/rs-async-log-watcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmobiltracker%2Frs-async-log-watcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmobiltracker%2Frs-async-log-watcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 960d80ca2570b2c7188b0d5b52508e3ca42663da
[INFO] checking mobiltracker/rs-async-log-watcher against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmobiltracker%2Frs-async-log-watcher" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mobiltracker/rs-async-log-watcher on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mobiltracker/rs-async-log-watcher
[INFO] finished tweaking git repo https://github.com/mobiltracker/rs-async-log-watcher
[INFO] tweaked toml for git repo https://github.com/mobiltracker/rs-async-log-watcher written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mobiltracker/rs-async-log-watcher already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 635cef98ac1c5db12bbd3689aa9999f5941cbc974c60f41c4ba565824d7d8143
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "635cef98ac1c5db12bbd3689aa9999f5941cbc974c60f41c4ba565824d7d8143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "635cef98ac1c5db12bbd3689aa9999f5941cbc974c60f41c4ba565824d7d8143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "635cef98ac1c5db12bbd3689aa9999f5941cbc974c60f41c4ba565824d7d8143", kill_on_drop: false }`
[INFO] [stdout] 635cef98ac1c5db12bbd3689aa9999f5941cbc974c60f41c4ba565824d7d8143
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d94f23458fecd1ae496ea97416748411decc1e0030865ccd1992003fb1fa80e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3d94f23458fecd1ae496ea97416748411decc1e0030865ccd1992003fb1fa80e", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking vec-arena v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]     Checking nb-connect v1.0.2
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]     Checking async-lock v2.3.0
[INFO] [stderr]     Checking async-mutex v1.4.0
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking polling v2.0.2
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking futures-lite v1.11.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking async-io v1.3.1
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]     Checking async-global-executor v1.4.3
[INFO] [stderr]     Checking async-process v1.0.1
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]     Checking async-std v1.8.0
[INFO] [stderr]     Checking async-log-watcher v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `todo`
[INFO] [stdout]  --> src/pretty_state.rs:2:54
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{os::unix::fs::MetadataExt, time::Duration, todo};
[INFO] [stdout]   |                                                      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::BufReadExt`
[INFO] [stdout]   --> src/pretty_state.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     io::{prelude::BufReadExt, prelude::SeekExt, BufReader, ReadExt},
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_lite::AsyncBufReadExt`
[INFO] [stdout]   --> src/pretty_state.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use futures_lite::AsyncBufReadExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Initilizing`
[INFO] [stdout]    --> src/pretty_state.rs:140:35
[INFO] [stdout]     |
[INFO] [stdout] 140 |     use super::{FileWatcherState, Initilizing};
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `todo`
[INFO] [stdout]  --> src/pretty_state.rs:2:54
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{os::unix::fs::MetadataExt, time::Duration, todo};
[INFO] [stdout]   |                                                      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::BufReadExt`
[INFO] [stdout]   --> src/pretty_state.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     io::{prelude::BufReadExt, prelude::SeekExt, BufReader, ReadExt},
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_lite::AsyncBufReadExt`
[INFO] [stdout]   --> src/pretty_state.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use futures_lite::AsyncBufReadExt;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `file_watcher` is never read
[INFO] [stdout]    --> src/pretty_state.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |         file_watcher = file_watcher
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `MAX_BUFFER_SIZE`
[INFO] [stdout]   --> src/pretty_state.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | static MAX_BUFFER_SIZE: usize = 1024 * 16; //16KB
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `MAX_BUFFER_SIZE`
[INFO] [stdout]   --> src/pretty_state.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | static MAX_BUFFER_SIZE: usize = 1024 * 16; //16KB
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]  --> tests/mod.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 |     use std::time::{Duration, Instant};
[INFO] [stdout]   |                               ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stop`
[INFO] [stdout]   --> tests/scenario.rs:81:18
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub async fn stop(&mut self) {
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.14s
[INFO] running `Command { std: "docker" "inspect" "3d94f23458fecd1ae496ea97416748411decc1e0030865ccd1992003fb1fa80e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d94f23458fecd1ae496ea97416748411decc1e0030865ccd1992003fb1fa80e", kill_on_drop: false }`
[INFO] [stdout] 3d94f23458fecd1ae496ea97416748411decc1e0030865ccd1992003fb1fa80e