[INFO] fetching crate garbage-fs 0.1.0...
[INFO] checking garbage-fs-0.1.0 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate garbage-fs 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate garbage-fs 0.1.0
[INFO] finished tweaking crates.io crate garbage-fs 0.1.0
[INFO] tweaked toml for crates.io crate garbage-fs 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate garbage-fs 0.1.0 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 27 packages to latest compatible versions
[INFO] [stderr]       Adding mockall v0.11.4 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f908f1772b481577627bddadeea12666af7ff5c9f5dc3bbf11585648c0371d41
[INFO] running `Command { std: "docker" "start" "-a" "f908f1772b481577627bddadeea12666af7ff5c9f5dc3bbf11585648c0371d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f908f1772b481577627bddadeea12666af7ff5c9f5dc3bbf11585648c0371d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f908f1772b481577627bddadeea12666af7ff5c9f5dc3bbf11585648c0371d41", kill_on_drop: false }`
[INFO] [stdout] f908f1772b481577627bddadeea12666af7ff5c9f5dc3bbf11585648c0371d41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86cdd1cd355a4dc89a622b58dbf59fc185899fe77e8086c3c4ca0e7d2d039664
[INFO] running `Command { std: "docker" "start" "-a" "86cdd1cd355a4dc89a622b58dbf59fc185899fe77e8086c3c4ca0e7d2d039664", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking predicates-core v1.0.10
[INFO] [stderr]     Checking either v1.16.0
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking termtree v0.5.1
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking fragile v2.1.0
[INFO] [stderr]     Checking downcast v0.11.0
[INFO] [stderr]     Checking garbage-fs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking predicates-tree v1.0.13
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking predicates v2.1.5
[INFO] [stderr]    Compiling mockall_derive v0.11.4
[INFO] [stderr]     Checking mockall v0.11.4
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:14:40
[INFO] [stdout]    |
[INFO] [stdout] 14 |   fn create_dir<P: AsRef<Path>>(&self, path: P) -> IoResult<()> {
[INFO] [stdout]    |                                        ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:18:44
[INFO] [stdout]    |
[INFO] [stdout] 18 |   fn create_dir_all<P: AsRef<Path>>(&self, path: P) -> IoResult<()> {
[INFO] [stdout]    |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from`
[INFO] [stdout]   --> src/mock.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     from: P,
[INFO] [stdout]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_from`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `to`
[INFO] [stdout]   --> src/mock.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     to: Q,
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_to`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:30:41
[INFO] [stdout]    |
[INFO] [stdout] 30 |   fn remove_file<P: AsRef<Path>>(&self, path: P) -> IoResult<()> {
[INFO] [stdout]    |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:34:44
[INFO] [stdout]    |
[INFO] [stdout] 34 |   fn remove_dir_all<P: AsRef<Path>>(&self, path: P) -> IoResult<()> {
[INFO] [stdout]    |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:38:39
[INFO] [stdout]    |
[INFO] [stdout] 38 |   fn read_link<P: AsRef<Path>>(&self, path: P) -> IoResult<PathBuf> {
[INFO] [stdout]    |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:42:43
[INFO] [stdout]    |
[INFO] [stdout] 42 |   fn path_metadata<P: AsRef<Path>>(&self, path: P) -> IoResult<Metadata> {
[INFO] [stdout]    |                                           ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:46:46
[INFO] [stdout]    |
[INFO] [stdout] 46 |   fn symlink_metadata<P: AsRef<Path>>(&self, path: P) -> IoResult<Metadata> {
[INFO] [stdout]    |                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/mock.rs:50:27
[INFO] [stdout]    |
[INFO] [stdout] 50 |   fn file_metadata(&self, file: &Self::File) -> IoResult<Metadata> {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:54:41
[INFO] [stdout]    |
[INFO] [stdout] 54 |   fn path_exists<P: AsRef<Path>>(&self, path: P) -> IoResult<bool> {
[INFO] [stdout]    |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:58:39
[INFO] [stdout]    |
[INFO] [stdout] 58 |   fn open_file<P: AsRef<Path>>(&self, path: P) -> IoResult<Self::File> {
[INFO] [stdout]    |                                       ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/mock.rs:62:41
[INFO] [stdout]    |
[INFO] [stdout] 62 |   fn create_file<P: AsRef<Path>>(&self, path: P) -> IoResult<Self::File> {
[INFO] [stdout]    |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `MockFilesystem` is never constructed
[INFO] [stdout]  --> src/mock.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct MockFilesystem {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mounts` is never read
[INFO] [stdout]  --> src/mock.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct MockFilesystem {
[INFO] [stdout]   |            -------------- field in this struct
[INFO] [stdout] 8 |   mounts: Vec<Mount>,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `garbage-fs` (lib test) due to 1 previous error; 14 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "86cdd1cd355a4dc89a622b58dbf59fc185899fe77e8086c3c4ca0e7d2d039664", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86cdd1cd355a4dc89a622b58dbf59fc185899fe77e8086c3c4ca0e7d2d039664", kill_on_drop: false }`
[INFO] [stdout] 86cdd1cd355a4dc89a622b58dbf59fc185899fe77e8086c3c4ca0e7d2d039664
