[INFO] cloning repository https://github.com/minhtrannhat/rusty-fibers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/minhtrannhat/rusty-fibers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminhtrannhat%2Frusty-fibers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminhtrannhat%2Frusty-fibers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e5b38a8909a6eabd8624895b684c84e055d5a0e
[INFO] checking minhtrannhat/rusty-fibers against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fminhtrannhat%2Frusty-fibers" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/minhtrannhat/rusty-fibers
[INFO] finished tweaking git repo https://github.com/minhtrannhat/rusty-fibers
[INFO] tweaked toml for git repo https://github.com/minhtrannhat/rusty-fibers written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/minhtrannhat/rusty-fibers on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/minhtrannhat/rusty-fibers 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51fa12e214b60be4ea9113829e254f40ed41ab3372b74ec3f5b5a9c46bf472b1
[INFO] running `Command { std: "docker" "start" "-a" "51fa12e214b60be4ea9113829e254f40ed41ab3372b74ec3f5b5a9c46bf472b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51fa12e214b60be4ea9113829e254f40ed41ab3372b74ec3f5b5a9c46bf472b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51fa12e214b60be4ea9113829e254f40ed41ab3372b74ec3f5b5a9c46bf472b1", kill_on_drop: false }`
[INFO] [stdout] 51fa12e214b60be4ea9113829e254f40ed41ab3372b74ec3f5b5a9c46bf472b1
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5736077e183adfa474de1176b6d90dec74bd942c16fb0f3f3599d1739bdb64c2
[INFO] running `Command { std: "docker" "start" "-a" "5736077e183adfa474de1176b6d90dec74bd942c16fb0f3f3599d1739bdb64c2", kill_on_drop: false }`
[INFO] [stderr]     Checking rusty-fiber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `naked_functions` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/main.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(naked_functions)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_STACK_SIZE` is never used
[INFO] [stdout]  --> src/runtime.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const DEFAULT_STACK_SIZE: usize = 1024 * 1024 * 2; // 2MB
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_THREADS` is never used
[INFO] [stdout]  --> src/runtime.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const MAX_THREADS: usize = 4;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `RUNTIME` is never used
[INFO] [stdout]   --> src/runtime.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub static mut RUNTIME: usize = 0;
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Runtime` is never constructed
[INFO] [stdout]   --> src/runtime.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Runtime {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `init`, `run`, `t_return`, and `t_yield` are never used
[INFO] [stdout]   --> src/runtime.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Runtime {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 22 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn init(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn run(&mut self) -> ! {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn t_return(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn t_yield(&mut self) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Thread` is never constructed
[INFO] [stdout]  --> src/thread.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Thread {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ThreadState` is never used
[INFO] [stdout]   --> src/thread.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum ThreadState {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ThreadContext` is never constructed
[INFO] [stdout]   --> src/thread.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct ThreadContext {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/thread.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Thread {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 48 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `naked_functions` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/main.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(naked_functions)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DEFAULT_STACK_SIZE` is never used
[INFO] [stdout]  --> src/runtime.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const DEFAULT_STACK_SIZE: usize = 1024 * 1024 * 2; // 2MB
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_THREADS` is never used
[INFO] [stdout]  --> src/runtime.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const MAX_THREADS: usize = 4;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `RUNTIME` is never used
[INFO] [stdout]   --> src/runtime.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub static mut RUNTIME: usize = 0;
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Runtime` is never constructed
[INFO] [stdout]   --> src/runtime.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct Runtime {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `init`, `run`, `t_return`, and `t_yield` are never used
[INFO] [stdout]   --> src/runtime.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Runtime {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 22 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn init(&self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn run(&mut self) -> ! {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     fn t_return(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     fn t_yield(&mut self) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Thread` is never constructed
[INFO] [stdout]  --> src/thread.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Thread {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ThreadState` is never used
[INFO] [stdout]   --> src/thread.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum ThreadState {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ThreadContext` is never constructed
[INFO] [stdout]   --> src/thread.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct ThreadContext {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/thread.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Thread {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 48 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "5736077e183adfa474de1176b6d90dec74bd942c16fb0f3f3599d1739bdb64c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5736077e183adfa474de1176b6d90dec74bd942c16fb0f3f3599d1739bdb64c2", kill_on_drop: false }`
[INFO] [stdout] 5736077e183adfa474de1176b6d90dec74bd942c16fb0f3f3599d1739bdb64c2
