[INFO] cloning repository https://github.com/levidavidmurray/nfs-watcher [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/levidavidmurray/nfs-watcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevidavidmurray%2Fnfs-watcher", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevidavidmurray%2Fnfs-watcher'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 9e4ddd8ed54ff94bbfa4b60182be9e1107be4c7f [INFO] testing levidavidmurray/nfs-watcher against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevidavidmurray%2Fnfs-watcher" "/workspace/builds/worker-32/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/levidavidmurray/nfs-watcher on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/levidavidmurray/nfs-watcher [INFO] finished tweaking git repo https://github.com/levidavidmurray/nfs-watcher [INFO] tweaked toml for git repo https://github.com/levidavidmurray/nfs-watcher written to /workspace/builds/worker-32/source/Cargo.toml [INFO] crate git repo https://github.com/levidavidmurray/nfs-watcher already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--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-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 87da8a41143c96965241d65389a166e290c39efd575f277fcca9a6145180a232 [INFO] running `Command { std: "docker" "start" "-a" "87da8a41143c96965241d65389a166e290c39efd575f277fcca9a6145180a232", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "87da8a41143c96965241d65389a166e290c39efd575f277fcca9a6145180a232", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "87da8a41143c96965241d65389a166e290c39efd575f277fcca9a6145180a232", kill_on_drop: false }` [INFO] [stdout] 87da8a41143c96965241d65389a166e290c39efd575f277fcca9a6145180a232 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d1491cce45ae64c541a02d5df875d93636469032128a12a60cd904c8322a6f9a [INFO] running `Command { std: "docker" "start" "-a" "d1491cce45ae64c541a02d5df875d93636469032128a12a60cd904c8322a6f9a", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.68 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling proc-macro2 v1.0.10 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.17 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling serde v1.0.106 [INFO] [stderr] Compiling stable_deref_trait v1.1.1 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling regex-syntax v0.6.17 [INFO] [stderr] Compiling slab v0.4.2 [INFO] [stderr] Compiling ryu v1.0.3 [INFO] [stderr] Compiling smallvec v1.3.0 [INFO] [stderr] Compiling lazycell v1.2.1 [INFO] [stderr] Compiling same-file v1.0.6 [INFO] [stderr] Compiling anymap v0.12.1 [INFO] [stderr] Compiling std_prelude v0.2.12 [INFO] [stderr] Compiling itoa v0.4.5 [INFO] [stderr] Compiling owning_ref v0.3.3 [INFO] [stderr] Compiling thread_local v1.0.1 [INFO] [stderr] Compiling lock_api v0.3.4 [INFO] [stderr] Compiling walkdir v2.3.1 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling smallvec v0.6.13 [INFO] [stderr] Compiling aho-corasick v0.7.10 [INFO] [stderr] Compiling quote v1.0.3 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling net2 v0.2.33 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling parking_lot_core v0.7.1 [INFO] [stderr] Compiling inotify-sys v0.1.3 [INFO] [stderr] Compiling filetime v0.2.9 [INFO] [stderr] Compiling crossbeam-channel v0.4.2 [INFO] [stderr] Compiling mio v0.6.21 [INFO] [stderr] Compiling inotify v0.8.2 [INFO] [stderr] Compiling parking_lot v0.10.2 [INFO] [stderr] Compiling parking_lot_core v0.2.14 [INFO] [stderr] Compiling openssl-sys v0.9.55 [INFO] [stderr] Compiling libz-sys v1.0.25 [INFO] [stderr] Compiling libssh2-sys v0.2.16 [INFO] [stderr] Compiling parking_lot v0.4.8 [INFO] [stderr] Compiling regex v1.3.6 [INFO] [stderr] Compiling chashmap v2.2.2 [INFO] [stderr] Compiling mio-extras v2.0.6 [INFO] [stderr] Compiling notify v5.0.0-pre.2 [INFO] [stderr] Compiling stfu8 v0.2.4 [INFO] [stderr] Compiling serde_derive v1.0.106 [INFO] [stderr] Compiling ssh2 v0.8.0 [INFO] [stderr] Compiling serde_json v1.0.51 [INFO] [stderr] Compiling path_abs v0.5.0 [INFO] [stderr] Compiling nfs-watcher v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `CreateKind`, `MetadataKind` [INFO] [stdout] --> src/main.rs:9:33 [INFO] [stdout] | [INFO] [stdout] 9 | use notify::event::{ModifyKind, CreateKind, MetadataKind}; [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Instant` [INFO] [stdout] --> src/main.rs:10:27 [INFO] [stdout] | [INFO] [stdout] 10 | use std::time::{Duration, Instant}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `MutexGuard` [INFO] [stdout] --> src/main.rs:14:35 [INFO] [stdout] | [INFO] [stdout] 14 | use std::sync::{mpsc, Arc, Mutex, MutexGuard}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `res` [INFO] [stdout] --> src/main.rs:80:17 [INFO] [stdout] | [INFO] [stdout] 80 | for res in rx { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `trigger_update` [INFO] [stdout] --> src/main.rs:169:4 [INFO] [stdout] | [INFO] [stdout] 169 | fn trigger_update(session: &mut Session, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:150:33 [INFO] [stdout] | [INFO] [stdout] 150 | ... &c_map.insert(path_buf.clone(), file.clone()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 150 | let _ = &c_map.insert(path_buf.clone(), file.clone()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:154:37 [INFO] [stdout] | [INFO] [stdout] 154 | ... &r_map.insert(path_buf.clone(), file.clone()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 154 | let _ = &r_map.insert(path_buf.clone(), file.clone()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 56.33s [INFO] running `Command { std: "docker" "inspect" "d1491cce45ae64c541a02d5df875d93636469032128a12a60cd904c8322a6f9a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d1491cce45ae64c541a02d5df875d93636469032128a12a60cd904c8322a6f9a", kill_on_drop: false }` [INFO] [stdout] d1491cce45ae64c541a02d5df875d93636469032128a12a60cd904c8322a6f9a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a63fd06d702834874360f14f5b03d6a61cdc78cc5b53d9abc1884ff685e911c5 [INFO] running `Command { std: "docker" "start" "-a" "a63fd06d702834874360f14f5b03d6a61cdc78cc5b53d9abc1884ff685e911c5", kill_on_drop: false }` [INFO] [stderr] Compiling nfs-watcher v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `CreateKind`, `MetadataKind` [INFO] [stdout] --> src/main.rs:9:33 [INFO] [stdout] | [INFO] [stdout] 9 | use notify::event::{ModifyKind, CreateKind, MetadataKind}; [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Instant` [INFO] [stdout] --> src/main.rs:10:27 [INFO] [stdout] | [INFO] [stdout] 10 | use std::time::{Duration, Instant}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `MutexGuard` [INFO] [stdout] --> src/main.rs:14:35 [INFO] [stdout] | [INFO] [stdout] 14 | use std::sync::{mpsc, Arc, Mutex, MutexGuard}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `res` [INFO] [stdout] --> src/main.rs:80:17 [INFO] [stdout] | [INFO] [stdout] 80 | for res in rx { [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `trigger_update` [INFO] [stdout] --> src/main.rs:169:4 [INFO] [stdout] | [INFO] [stdout] 169 | fn trigger_update(session: &mut Session, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:150:33 [INFO] [stdout] | [INFO] [stdout] 150 | ... &c_map.insert(path_buf.clone(), file.clone()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 150 | let _ = &c_map.insert(path_buf.clone(), file.clone()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/main.rs:154:37 [INFO] [stdout] | [INFO] [stdout] 154 | ... &r_map.insert(path_buf.clone(), file.clone()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 154 | let _ = &r_map.insert(path_buf.clone(), file.clone()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 7 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.56s [INFO] running `Command { std: "docker" "inspect" "a63fd06d702834874360f14f5b03d6a61cdc78cc5b53d9abc1884ff685e911c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a63fd06d702834874360f14f5b03d6a61cdc78cc5b53d9abc1884ff685e911c5", kill_on_drop: false }` [INFO] [stdout] a63fd06d702834874360f14f5b03d6a61cdc78cc5b53d9abc1884ff685e911c5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 71e5cb90383c2279467c81e6860547fabf2074eb78b822cf3174c7b6d0556d90 [INFO] running `Command { std: "docker" "start" "-a" "71e5cb90383c2279467c81e6860547fabf2074eb78b822cf3174c7b6d0556d90", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: unused imports: `CreateKind`, `MetadataKind` [INFO] [stderr] --> src/main.rs:9:33 [INFO] [stderr] | [INFO] [stderr] 9 | use notify::event::{ModifyKind, CreateKind, MetadataKind}; [INFO] [stderr] | ^^^^^^^^^^ ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Instant` [INFO] [stderr] --> src/main.rs:10:27 [INFO] [stderr] | [INFO] [stderr] 10 | use std::time::{Duration, Instant}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `MutexGuard` [INFO] [stderr] --> src/main.rs:14:35 [INFO] [stderr] | [INFO] [stderr] 14 | use std::sync::{mpsc, Arc, Mutex, MutexGuard}; [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `res` [INFO] [stderr] --> src/main.rs:80:17 [INFO] [stderr] | [INFO] [stderr] 80 | for res in rx { [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_res` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `trigger_update` [INFO] [stderr] --> src/main.rs:169:4 [INFO] [stderr] | [INFO] [stderr] 169 | fn trigger_update(session: &mut Session, [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/main.rs:150:33 [INFO] [stderr] | [INFO] [stderr] 150 | ... &c_map.insert(path_buf.clone(), file.clone()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 150 | let _ = &c_map.insert(path_buf.clone(), file.clone()); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/main.rs:154:37 [INFO] [stderr] | [INFO] [stderr] 154 | ... &r_map.insert(path_buf.clone(), file.clone()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 154 | let _ = &r_map.insert(path_buf.clone(), file.clone()); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `nfs-watcher` (bin "nfs-watcher" test) generated 7 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.32s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/nfs_watcher-546e2e96b6449885) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "71e5cb90383c2279467c81e6860547fabf2074eb78b822cf3174c7b6d0556d90", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "71e5cb90383c2279467c81e6860547fabf2074eb78b822cf3174c7b6d0556d90", kill_on_drop: false }` [INFO] [stdout] 71e5cb90383c2279467c81e6860547fabf2074eb78b822cf3174c7b6d0556d90