[INFO] updating cached repository https://github.com/quirinux/pickaxe
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 96bdc5501f76f94b42587597139a9ebe85a625ed
[INFO] checking quirinux/pickaxe against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquirinux%2Fpickaxe" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quirinux/pickaxe on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/quirinux/pickaxe
[INFO] finished tweaking git repo https://github.com/quirinux/pickaxe
[INFO] tweaked toml for git repo https://github.com/quirinux/pickaxe written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/quirinux/pickaxe already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8c335097f6333b76d2391a3b6d9033f203bbd1f406d669990c0f97c86709603c
[INFO] running `"docker" "start" "-a" "8c335097f6333b76d2391a3b6d9033f203bbd1f406d669990c0f97c86709603c"`
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]    Compiling tokio-macros v0.2.3
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]     Checking tokio v0.2.9
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]     Checking pin-project v0.4.6
[INFO] [stderr]    Compiling structopt-derive v0.4.0
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tokio-tls v0.3.0
[INFO] [stderr]     Checking structopt v0.3.7
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking hyper v0.13.1
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking reqwest v0.10.1
[INFO] [stderr]     Checking pickaxe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `Receiver`, `tick`
[INFO] [stderr]  --> src/broker.rs:6:36
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crossbeam_channel::{unbounded, tick, Receiver};
[INFO] [stderr]   |                                    ^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Receiver`, `tick`
[INFO] [stderr]  --> src/broker.rs:6:36
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crossbeam_channel::{unbounded, tick, Receiver};
[INFO] [stderr]   |                                    ^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/broker.rs:43:7
[INFO] [stderr]    |
[INFO] [stderr] 43 | /       thread::Builder::new()
[INFO] [stderr] 44 | |         .name(t.to_string())
[INFO] [stderr] 45 | |         .stack_size(128 * 1024)
[INFO] [stderr] 46 | |         .spawn(move || worker::new(send, recv).run());
[INFO] [stderr]    | |______________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/broker.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     self.task_sender.send(task);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/worker.rs:38:11
[INFO] [stderr]    |
[INFO] [stderr] 38 | /           match client.get(&task.url).timeout(time_out).send() {
[INFO] [stderr] 39 | |             Ok(res) => self.sender.send(WorkResult::Ok{ status_code: res.status(), duration: duration.elapsed(), url: res.url().clone()}),
[INFO] [stderr] 40 | |             Err(e) => {
[INFO] [stderr] 41 | |               if e.is_timeout() {
[INFO] [stderr] ...  |
[INFO] [stderr] 46 | |             },
[INFO] [stderr] 47 | |           };
[INFO] [stderr]    | |____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/broker.rs:43:7
[INFO] [stderr]    |
[INFO] [stderr] 43 | /       thread::Builder::new()
[INFO] [stderr] 44 | |         .name(t.to_string())
[INFO] [stderr] 45 | |         .stack_size(128 * 1024)
[INFO] [stderr] 46 | |         .spawn(move || worker::new(send, recv).run());
[INFO] [stderr]    | |______________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/broker.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     self.task_sender.send(task);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/worker.rs:38:11
[INFO] [stderr]    |
[INFO] [stderr] 38 | /           match client.get(&task.url).timeout(time_out).send() {
[INFO] [stderr] 39 | |             Ok(res) => self.sender.send(WorkResult::Ok{ status_code: res.status(), duration: duration.elapsed(), url: res.url().clone()}),
[INFO] [stderr] 40 | |             Err(e) => {
[INFO] [stderr] 41 | |               if e.is_timeout() {
[INFO] [stderr] ...  |
[INFO] [stderr] 46 | |             },
[INFO] [stderr] 47 | |           };
[INFO] [stderr]    | |____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.00s
[INFO] running `"docker" "inspect" "8c335097f6333b76d2391a3b6d9033f203bbd1f406d669990c0f97c86709603c"`
[INFO] running `"docker" "rm" "-f" "8c335097f6333b76d2391a3b6d9033f203bbd1f406d669990c0f97c86709603c"`
[INFO] [stdout] 8c335097f6333b76d2391a3b6d9033f203bbd1f406d669990c0f97c86709603c