[INFO] cloning repository https://github.com/Wcubed/asset_keeper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Wcubed/asset_keeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWcubed%2Fasset_keeper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWcubed%2Fasset_keeper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23526b40bdf5b47c75b0fc7bd4fe51b52a252d41
[INFO] checking Wcubed/asset_keeper against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWcubed%2Fasset_keeper" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Wcubed/asset_keeper on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Wcubed/asset_keeper
[INFO] finished tweaking git repo https://github.com/Wcubed/asset_keeper
[INFO] tweaked toml for git repo https://github.com/Wcubed/asset_keeper written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Wcubed/asset_keeper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 267a9bfe40d7f4ef6a44d7a3a7c3f0b5bc30f211a765b1b4cc702c9f4e192b91
[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" "267a9bfe40d7f4ef6a44d7a3a7c3f0b5bc30f211a765b1b4cc702c9f4e192b91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "267a9bfe40d7f4ef6a44d7a3a7c3f0b5bc30f211a765b1b4cc702c9f4e192b91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "267a9bfe40d7f4ef6a44d7a3a7c3f0b5bc30f211a765b1b4cc702c9f4e192b91", kill_on_drop: false }`
[INFO] [stdout] 267a9bfe40d7f4ef6a44d7a3a7c3f0b5bc30f211a765b1b4cc702c9f4e192b91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 546e8be640edd6050e37009ca437b7b48fda4c24c96c95371a19e75c570d1bf2
[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" "546e8be640edd6050e37009ca437b7b48fda4c24c96c95371a19e75c570d1bf2", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking asset_keeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stdout] warning: struct is never constructed: `Data`
[INFO] [stdout]  --> src/data.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Data {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/data.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new(save_dir: &Path, files_dir: &Path) -> Result<Data> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_file_from_disk`
[INFO] [stdout]   --> src/data.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn add_file_from_disk(&mut self, title: &str, file: &Path) -> Result<FileId> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `file_count`
[INFO] [stdout]   --> src/data.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn file_count(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `file_iter`
[INFO] [stdout]   --> src/data.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn file_iter(&self) -> Iter<FileId, File> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_file_info`
[INFO] [stdout]   --> src/data.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn get_file_info(&self, id: FileId) -> Option<&File> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/stores/file_store.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn to_string(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `next_id`
[INFO] [stdout]   --> src/stores/file_store.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     next_id: FileId,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/stores/file_store.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn new() -> FileStore {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_file`
[INFO] [stdout]   --> src/stores/file_store.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn new_file(&mut self, title: &str, extension: KnownExtension) -> (FileId, PathBuf) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `id`
[INFO] [stdout]   --> src/stores/file_store.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     id: FileId,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `title`
[INFO] [stdout]   --> src/stores/file_store.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     title: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `extension`
[INFO] [stdout]   --> src/stores/file_store.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     extension: KnownExtension,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `system_tags`
[INFO] [stdout]   --> src/stores/file_store.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     system_tags: HashSet<SystemTag>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `title`
[INFO] [stdout]   --> src/stores/file_store.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn title(&self) -> &str {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `extension`
[INFO] [stdout]   --> src/stores/file_store.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn extension(&self) -> &KnownExtension {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `file_name`
[INFO] [stdout]   --> src/stores/file_store.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn file_name(&self) -> PathBuf {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `system_tags`
[INFO] [stdout]   --> src/stores/file_store.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn system_tags(&self) -> &HashSet<SystemTag> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Png`
[INFO] [stdout]    --> src/stores/file_store.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 106 |     Png,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]    --> src/stores/file_store.rs:112:12
[INFO] [stdout]     |
[INFO] [stdout] 112 |     pub fn from_str(string: &str) -> Option<KnownExtension> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_path`
[INFO] [stdout]    --> src/stores/file_store.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 |     pub fn from_path(path: &Path) -> Option<KnownExtension> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_str`
[INFO] [stdout]    --> src/stores/file_store.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn to_str(&self) -> &str {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Transparent`
[INFO] [stdout]    --> src/stores/file_store.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 135 |     Transparent,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking naughty-strings v0.2.3
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/data.rs:97:13
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let data = Data::new(&save_dir, &file_dir);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `save_dir`
[INFO] [stdout]  --> src/data.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     save_dir: PathBuf,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `file_iter`
[INFO] [stdout]   --> src/data.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn file_iter(&self) -> Iter<FileId, File> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `system_tags`
[INFO] [stdout]   --> src/stores/file_store.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     system_tags: HashSet<SystemTag>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `extension`
[INFO] [stdout]   --> src/stores/file_store.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn extension(&self) -> &KnownExtension {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `system_tags`
[INFO] [stdout]   --> src/stores/file_store.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn system_tags(&self) -> &HashSet<SystemTag> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Transparent`
[INFO] [stdout]    --> src/stores/file_store.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 135 |     Transparent,
[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 12.85s
[INFO] running `Command { std: "docker" "inspect" "546e8be640edd6050e37009ca437b7b48fda4c24c96c95371a19e75c570d1bf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "546e8be640edd6050e37009ca437b7b48fda4c24c96c95371a19e75c570d1bf2", kill_on_drop: false }`
[INFO] [stdout] 546e8be640edd6050e37009ca437b7b48fda4c24c96c95371a19e75c570d1bf2