[INFO] cloning repository https://github.com/keithyin/mini_tokio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keithyin/mini_tokio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeithyin%2Fmini_tokio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeithyin%2Fmini_tokio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d22a66b8ac5f4b9a8556b07d8e5d83f018fd270
[INFO] checking keithyin/mini_tokio against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeithyin%2Fmini_tokio" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/keithyin/mini_tokio
[INFO] finished tweaking git repo https://github.com/keithyin/mini_tokio
[INFO] tweaked toml for git repo https://github.com/keithyin/mini_tokio written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/keithyin/mini_tokio on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/keithyin/mini_tokio 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee865eb3e66ab8a1b87195686462ce13914a22e492263c4a709997fe2c0f5be5
[INFO] running `Command { std: "docker" "start" "-a" "ee865eb3e66ab8a1b87195686462ce13914a22e492263c4a709997fe2c0f5be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee865eb3e66ab8a1b87195686462ce13914a22e492263c4a709997fe2c0f5be5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee865eb3e66ab8a1b87195686462ce13914a22e492263c4a709997fe2c0f5be5", kill_on_drop: false }`
[INFO] [stdout] ee865eb3e66ab8a1b87195686462ce13914a22e492263c4a709997fe2c0f5be5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad51ecdc14c0b2b3ebba83ee3dd38e16f12da07bda4dff172dddae66471dc57e
[INFO] running `Command { std: "docker" "start" "-a" "ad51ecdc14c0b2b3ebba83ee3dd38e16f12da07bda4dff172dddae66471dc57e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Checking mini_tokio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand`
[INFO] [stdout]  --> src/static_bound_demo.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MiniTokio` is never constructed
[INFO] [stdout]  --> src/mini_tokio.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct MiniTokio {
[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 `Task` is never constructed
[INFO] [stdout]   --> src/mini_tokio.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Task {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `run`, `new`, and `spawn` are never used
[INFO] [stdout]   --> src/mini_tokio.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl MiniTokio {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 26 |     fn run(&self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn new() -> MiniTokio {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn spawn<F>(&self, future: F)
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `schedule` is never used
[INFO] [stdout]   --> src/mini_tokio.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Task {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 52 |     fn schedule(self: &Arc<Self>) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `poll` and `spawn` are never used
[INFO] [stdout]   --> src/mini_tokio.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Task {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 63 |     fn poll(self: Arc<Self>) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn spawn<F>(future: F, sender: &channel::Sender<Arc<Task>>)
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mini_tokio.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         self.executor.send(self.clone());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let _ = self.executor.send(self.clone());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `testBoxPin` should have a snake case name
[INFO] [stdout]    --> src/mini_tokio.rs:100:8
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn testBoxPin() {
[INFO] [stdout]     |        ^^^^^^^^^^ help: convert the identifier to snake case: `test_box_pin`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand`
[INFO] [stdout]  --> src/static_bound_demo.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MiniTokio` is never constructed
[INFO] [stdout]  --> src/mini_tokio.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct MiniTokio {
[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 `Task` is never constructed
[INFO] [stdout]   --> src/mini_tokio.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Task {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `run`, `new`, and `spawn` are never used
[INFO] [stdout]   --> src/mini_tokio.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl MiniTokio {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 26 |     fn run(&self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn new() -> MiniTokio {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn spawn<F>(&self, future: F)
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `schedule` is never used
[INFO] [stdout]   --> src/mini_tokio.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Task {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 52 |     fn schedule(self: &Arc<Self>) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `poll` and `spawn` are never used
[INFO] [stdout]   --> src/mini_tokio.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Task {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 63 |     fn poll(self: Arc<Self>) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn spawn<F>(future: F, sender: &channel::Sender<Arc<Task>>)
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `drop_static` is never used
[INFO] [stdout]  --> src/static_bound_demo.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn drop_static<T: 'static>(t: T) {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/mini_tokio.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         self.executor.send(self.clone());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let _ = self.executor.send(self.clone());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.38s
[INFO] running `Command { std: "docker" "inspect" "ad51ecdc14c0b2b3ebba83ee3dd38e16f12da07bda4dff172dddae66471dc57e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad51ecdc14c0b2b3ebba83ee3dd38e16f12da07bda4dff172dddae66471dc57e", kill_on_drop: false }`
[INFO] [stdout] ad51ecdc14c0b2b3ebba83ee3dd38e16f12da07bda4dff172dddae66471dc57e