[INFO] cloning repository https://github.com/chenquan/r-cache
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chenquan/r-cache" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenquan%2Fr-cache", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenquan%2Fr-cache'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fbc5e4e08869e6f678c776f46e4baa27ae6193e
[INFO] checking chenquan/r-cache against try#b152f5575a2ac7126ae0019e4e679abe9399213e for pr-157841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenquan%2Fr-cache" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chenquan/r-cache
[INFO] finished tweaking git repo https://github.com/chenquan/r-cache
[INFO] tweaked toml for git repo https://github.com/chenquan/r-cache written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chenquan/r-cache on toolchain b152f5575a2ac7126ae0019e4e679abe9399213e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chenquan/r-cache 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" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking chenquan/r-cache against try#b152f5575a2ac7126ae0019e4e679abe9399213e for pr-157841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchenquan%2Fr-cache" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chenquan/r-cache
[INFO] finished tweaking git repo https://github.com/chenquan/r-cache
[INFO] tweaked toml for git repo https://github.com/chenquan/r-cache written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chenquan/r-cache on toolchain b152f5575a2ac7126ae0019e4e679abe9399213e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chenquan/r-cache 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" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "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-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f97978bb80909cfbdc444526041b3d67a98328dbf06e1735f41bf3f272275f61
[INFO] running `Command { std: "docker" "start" "f97978bb80909cfbdc444526041b3d67a98328dbf06e1735f41bf3f272275f61", 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" "f97978bb80909cfbdc444526041b3d67a98328dbf06e1735f41bf3f272275f61" "/opt/rustwide/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f97978bb80909cfbdc444526041b3d67a98328dbf06e1735f41bf3f272275f61", 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" "f97978bb80909cfbdc444526041b3d67a98328dbf06e1735f41bf3f272275f61" "/opt/rustwide/cargo-home/bin/cargo" "+b152f5575a2ac7126ae0019e4e679abe9399213e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking r-cache v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Cache` is never used
[INFO] [stdout]  --> src/cache/cache.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Cache<T> {
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LRUCache` is never constructed
[INFO] [stdout]  --> src/cache/cache.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct LRUCache<T>
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/cache/cache.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl<T> LRUCache<T> where T: Clone, {
[INFO] [stdout]    | ----------------------------------- associated function in this implementation
[INFO] [stdout] 17 |     pub fn new(cap: i64) -> LRUCache<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Call` is never constructed
[INFO] [stdout]  --> src/single_flight/single_flight.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Call<T> where T: Clone + Debug {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/single_flight/single_flight.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<T> Call<T> where T: Clone + Debug {
[INFO] [stdout]    | -------------------------------------- associated function in this implementation
[INFO] [stdout] 15 |     fn new() -> Call<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Group` is never constructed
[INFO] [stdout]   --> src/single_flight/single_flight.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Group<T> where T: Clone + Debug {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `do_fn` are never used
[INFO] [stdout]   --> src/single_flight/single_flight.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl<T> Group<T> where T: Clone + Debug {
[INFO] [stdout]    | --------------------------------------- associated items in this implementation
[INFO] [stdout] 35 |     pub fn new() -> Group<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn do_fn<F>(&self, key: &str, func: F) -> Option<T>
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WaitGroup` is never constructed
[INFO] [stdout]  --> src/single_flight/wait_group.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct WaitGroup {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Inner` is never constructed
[INFO] [stdout]  --> src/single_flight/wait_group.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Inner {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `wait` are never used
[INFO] [stdout]   --> src/single_flight/wait_group.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl WaitGroup {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 47 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn wait(self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Group` is never constructed
[INFO] [stdout]  --> src/group/group.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Group {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/group/group.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Group {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 13 |     pub fn new(name: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `put`, `get`, `delete`, `name`, and `get_local` are never used
[INFO] [stdout]   --> src/group/group.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Group {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 19 |     fn put(&mut self, key: String, value: Vec<u8>) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 23 |     fn get(&mut self, key: &str) -> Option<Vec<u8>> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn delete(&mut self) {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 39 |
[INFO] [stdout] 40 |     fn name(self) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn get_local(&self, _: &str) -> Option<Vec<u8>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]  --> src/group/group.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Group {
[INFO] [stdout]   |        ----- field in this struct
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `delete` and `name` are never used
[INFO] [stdout]   --> src/group/group.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Group {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn delete(&mut self) {}
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 39 |
[INFO] [stdout] 40 |     fn name(self) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "f97978bb80909cfbdc444526041b3d67a98328dbf06e1735f41bf3f272275f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f97978bb80909cfbdc444526041b3d67a98328dbf06e1735f41bf3f272275f61", kill_on_drop: false }`
[INFO] [stdout] f97978bb80909cfbdc444526041b3d67a98328dbf06e1735f41bf3f272275f61
