[INFO] cloning repository https://github.com/yifaaan/async-rust-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yifaaan/async-rust-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyifaaan%2Fasync-rust-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyifaaan%2Fasync-rust-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 543bf509b10a81d65e799cf7748b14229f6cf8c7
[INFO] checking yifaaan/async-rust-learn against try#c8085cfed34c45021fc8f66d073f6394b3e35431 for pr-148939
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyifaaan%2Fasync-rust-learn" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/yifaaan/async-rust-learn
[INFO] finished tweaking git repo https://github.com/yifaaan/async-rust-learn
[INFO] tweaked toml for git repo https://github.com/yifaaan/async-rust-learn written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/yifaaan/async-rust-learn on toolchain c8085cfed34c45021fc8f66d073f6394b3e35431
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/yifaaan/async-rust-learn 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" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4dc1fadab18c5ea80da474e63b130cff2885e7d8041a087bf6158d017af90c27
[INFO] running `Command { std: "docker" "start" "-a" "4dc1fadab18c5ea80da474e63b130cff2885e7d8041a087bf6158d017af90c27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4dc1fadab18c5ea80da474e63b130cff2885e7d8041a087bf6158d017af90c27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dc1fadab18c5ea80da474e63b130cff2885e7d8041a087bf6158d017af90c27", kill_on_drop: false }`
[INFO] [stdout] 4dc1fadab18c5ea80da474e63b130cff2885e7d8041a087bf6158d017af90c27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+c8085cfed34c45021fc8f66d073f6394b3e35431" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d3ed8a9b0eaac95d77622803912901da27cd13c2221a447d5c16f22f91c4276
[INFO] running `Command { std: "docker" "start" "-a" "7d3ed8a9b0eaac95d77622803912901da27cd13c2221a447d5c16f22f91c4276", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]     Checking a-stack-swap v0.1.0 (/opt/rustwide/workdir/a-stack-swap)
[INFO] [stderr]     Checking c-fibers v0.1.0 (/opt/rustwide/workdir/c-fibers)
[INFO] [stderr]     Checking async-rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking corofy v0.1.0 (/opt/rustwide/workdir/corofy)
[INFO] [stdout] warning: unused imports: `cell::RefCell`, `ops::Deref`, and `rc::Rc`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::RefCell, ops::Deref, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]    --> c-fibers/src/main.rs:156:3
[INFO] [stdout]     |
[INFO] [stdout] 156 | #[naked]
[INFO] [stdout]     |   ^^^^^ usage of unsafe attribute
[INFO] [stdout]     |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]     |
[INFO] [stdout] 156 | #[unsafe(naked)]
[INFO] [stdout]     |   +++++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]    --> c-fibers/src/main.rs:168:3
[INFO] [stdout]     |
[INFO] [stdout] 168 | #[naked]
[INFO] [stdout]     |   ^^^^^ usage of unsafe attribute
[INFO] [stdout]     |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]     |
[INFO] [stdout] 168 | #[unsafe(naked)]
[INFO] [stdout]     |   +++++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `cell::RefCell`, `ops::Deref`, and `rc::Rc`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::RefCell, ops::Deref, rc::Rc};
[INFO] [stdout]   |           ^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]  --> src/main.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn check_item(item: Option<&Item>) {}
[INFO] [stdout]   |               ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Item` is never constructed
[INFO] [stdout]  --> src/main.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Item {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_item` is never used
[INFO] [stdout]  --> src/main.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn check_item(item: Option<&Item>) {}
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `item`
[INFO] [stdout]  --> src/main.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn check_item(item: Option<&Item>) {}
[INFO] [stdout]   |               ^^^^ help: if this is intentional, prefix it with an underscore: `_item`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Item` is never constructed
[INFO] [stdout]  --> src/main.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Item {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_item` is never used
[INFO] [stdout]  --> src/main.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn check_item(item: Option<&Item>) {}
[INFO] [stdout]   |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]    --> c-fibers/src/main.rs:156:3
[INFO] [stdout]     |
[INFO] [stdout] 156 | #[naked]
[INFO] [stdout]     |   ^^^^^ usage of unsafe attribute
[INFO] [stdout]     |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]     |
[INFO] [stdout] 156 | #[unsafe(naked)]
[INFO] [stdout]     |   +++++++     +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unsafe attribute used without unsafe
[INFO] [stdout]    --> c-fibers/src/main.rs:168:3
[INFO] [stdout]     |
[INFO] [stdout] 168 | #[naked]
[INFO] [stdout]     |   ^^^^^ usage of unsafe attribute
[INFO] [stdout]     |
[INFO] [stdout] help: wrap the attribute in `unsafe(...)`
[INFO] [stdout]     |
[INFO] [stdout] 168 | #[unsafe(naked)]
[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]  --> c-fibers/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(naked_functions)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[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]  --> c-fibers/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(naked_functions)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]   --> a-stack-swap/src/main.rs:51:67
[INFO] [stdout]    |
[INFO] [stdout] 51 |         std::ptr::write(sb_aligned.offset(-16) as *mut u64, hello as u64);
[INFO] [stdout]    |                                                                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(function_casts_as_integer)]` on by default
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]    |
[INFO] [stdout] 51 |         std::ptr::write(sb_aligned.offset(-16) as *mut u64, hello as *const () as u64);
[INFO] [stdout]    |                                                                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]   --> a-stack-swap/src/main.rs:51:67
[INFO] [stdout]    |
[INFO] [stdout] 51 |         std::ptr::write(sb_aligned.offset(-16) as *mut u64, hello as u64);
[INFO] [stdout]    |                                                                   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(function_casts_as_integer)]` on by default
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]    |
[INFO] [stdout] 51 |         std::ptr::write(sb_aligned.offset(-16) as *mut u64, hello as *const () as u64);
[INFO] [stdout]    |                                                                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0787]: the `asm!` macro is not allowed in naked functions
[INFO] [stdout]    --> c-fibers/src/main.rs:158:5
[INFO] [stdout]     |
[INFO] [stdout] 158 |     asm!("ret", options(noreturn))
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider using the `naked_asm!` macro instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0787]: the `asm!` macro is not allowed in naked functions
[INFO] [stdout]    --> c-fibers/src/main.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 171 | /     asm!(
[INFO] [stdout] 172 | |         // 保存旧线程的上下文
[INFO] [stdout] 173 | |         "mov [rdi + 0x00], rsp",
[INFO] [stdout] 174 | |         "mov [rdi + 0x08], r15",
[INFO] [stdout] ...   |
[INFO] [stdout] 189 | |         options(noreturn)
[INFO] [stdout] 190 | |     );
[INFO] [stdout]     | |_____^ consider using the `naked_asm!` macro instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0787]: the `asm!` macro is not allowed in naked functions
[INFO] [stdout]    --> c-fibers/src/main.rs:158:5
[INFO] [stdout]     |
[INFO] [stdout] 158 |     asm!("ret", options(noreturn))
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ consider using the `naked_asm!` macro instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0787]: the `asm!` macro is not allowed in naked functions
[INFO] [stdout]    --> c-fibers/src/main.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 171 | /     asm!(
[INFO] [stdout] 172 | |         // 保存旧线程的上下文
[INFO] [stdout] 173 | |         "mov [rdi + 0x00], rsp",
[INFO] [stdout] 174 | |         "mov [rdi + 0x08], r15",
[INFO] [stdout] ...   |
[INFO] [stdout] 189 | |         options(noreturn)
[INFO] [stdout] 190 | |     );
[INFO] [stdout]     | |_____^ consider using the `naked_asm!` macro instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0787`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0787`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `c-fibers` (bin "c-fibers") due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `c-fibers` (bin "c-fibers" test) due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "7d3ed8a9b0eaac95d77622803912901da27cd13c2221a447d5c16f22f91c4276", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d3ed8a9b0eaac95d77622803912901da27cd13c2221a447d5c16f22f91c4276", kill_on_drop: false }`
[INFO] [stdout] 7d3ed8a9b0eaac95d77622803912901da27cd13c2221a447d5c16f22f91c4276
