[INFO] cloning repository https://github.com/0xf4b1/quars
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0xf4b1/quars" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xf4b1%2Fquars", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xf4b1%2Fquars'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 87cfeb24dba0d46258e617323105ce61a10d9a55
[INFO] checking 0xf4b1/quars against 656a9da186dacaf3bf8f7f7296a825d256cb4ae3 for pr-158915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xf4b1%2Fquars" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0xf4b1/quars
[INFO] finished tweaking git repo https://github.com/0xf4b1/quars
[INFO] tweaked toml for git repo https://github.com/0xf4b1/quars written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0xf4b1/quars on toolchain 656a9da186dacaf3bf8f7f7296a825d256cb4ae3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+656a9da186dacaf3bf8f7f7296a825d256cb4ae3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0xf4b1/quars already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+656a9da186dacaf3bf8f7f7296a825d256cb4ae3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.68
[INFO] [stderr]   Downloaded vcpkg v0.2.13
[INFO] [stderr]   Downloaded rusb v0.8.0
[INFO] [stderr]   Downloaded libusb1-sys v0.5.0
[INFO] [stderr]   Downloaded libc v0.2.95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] de98f6308a8e50ad409d349eb86ee0fc138e9c54b5419e98be5d4380e0ed9b7f
[INFO] running `Command { std: "docker" "start" "de98f6308a8e50ad409d349eb86ee0fc138e9c54b5419e98be5d4380e0ed9b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de98f6308a8e50ad409d349eb86ee0fc138e9c54b5419e98be5d4380e0ed9b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "de98f6308a8e50ad409d349eb86ee0fc138e9c54b5419e98be5d4380e0ed9b7f" "/opt/rustwide/cargo-home/bin/cargo" "+656a9da186dacaf3bf8f7f7296a825d256cb4ae3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de98f6308a8e50ad409d349eb86ee0fc138e9c54b5419e98be5d4380e0ed9b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "de98f6308a8e50ad409d349eb86ee0fc138e9c54b5419e98be5d4380e0ed9b7f" "/opt/rustwide/cargo-home/bin/cargo" "+656a9da186dacaf3bf8f7f7296a825d256cb4ae3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling rusb v0.8.0
[INFO] [stderr]    Compiling libusb1-sys v0.5.0
[INFO] [stderr]     Checking quars v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `config`, `iface`, and `setting` are never read
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Endpoint {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 36 |     config: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 37 |     iface: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 38 |     setting: u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Endpoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `config`, `iface`, and `setting` are never read
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Endpoint {
[INFO] [stdout]    |        -------- fields in this struct
[INFO] [stdout] 36 |     config: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 37 |     iface: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 38 |     setting: u8,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Endpoint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:244:17
[INFO] [stdout]     |
[INFO] [stdout] 242 |         &'a mut self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] 243 |         path: &str,
[INFO] [stdout] 244 |     ) -> Result<&(Vec<DirEntry>, Vec<DirEntry>), std::io::Error> {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 244 |     ) -> Result<&'a (Vec<DirEntry>, Vec<DirEntry>), std::io::Error> {
[INFO] [stdout]     |                  ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:244:17
[INFO] [stdout]     |
[INFO] [stdout] 242 |         &'a mut self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] 243 |         path: &str,
[INFO] [stdout] 244 |     ) -> Result<&(Vec<DirEntry>, Vec<DirEntry>), std::io::Error> {
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 244 |     ) -> Result<&'a (Vec<DirEntry>, Vec<DirEntry>), std::io::Error> {
[INFO] [stdout]     |                  ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:282:62
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn open_file<'a>(&'a mut self, path: &str) -> Result<&File, std::io::Error> {
[INFO] [stdout]     |                           -- the lifetime is named here      ^^^^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn open_file<'a>(&'a mut self, path: &str) -> Result<&'a File, std::io::Error> {
[INFO] [stdout]     |                                                               ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:282:62
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn open_file<'a>(&'a mut self, path: &str) -> Result<&File, std::io::Error> {
[INFO] [stdout]     |                           -- the lifetime is named here      ^^^^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn open_file<'a>(&'a mut self, path: &str) -> Result<&'a File, std::io::Error> {
[INFO] [stdout]     |                                                               ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "de98f6308a8e50ad409d349eb86ee0fc138e9c54b5419e98be5d4380e0ed9b7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de98f6308a8e50ad409d349eb86ee0fc138e9c54b5419e98be5d4380e0ed9b7f", kill_on_drop: false }`
[INFO] [stdout] de98f6308a8e50ad409d349eb86ee0fc138e9c54b5419e98be5d4380e0ed9b7f