[INFO] fetching crate pi_lfstack 0.1.5...
[INFO] building pi_lfstack-0.1.5 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate pi_lfstack 0.1.5 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate pi_lfstack 0.1.5
[INFO] finished tweaking crates.io crate pi_lfstack 0.1.5
[INFO] tweaked toml for crates.io crate pi_lfstack 0.1.5 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pi_lfstack 0.1.5 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding crossbeam-channel v0.3.9 (available: v0.5.15)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cfg-if v0.1.10
[INFO] [stderr]   Downloaded lazy_static v1.5.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.6.6
[INFO] [stderr]   Downloaded crossbeam-channel v0.3.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 207c4710b4f334e3cb740eabe9afbe4a139b0dc0f364538c4084a2ceecea261d
[INFO] running `Command { std: "docker" "start" "-a" "207c4710b4f334e3cb740eabe9afbe4a139b0dc0f364538c4084a2ceecea261d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "207c4710b4f334e3cb740eabe9afbe4a139b0dc0f364538c4084a2ceecea261d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "207c4710b4f334e3cb740eabe9afbe4a139b0dc0f364538c4084a2ceecea261d", kill_on_drop: false }`
[INFO] [stdout] 207c4710b4f334e3cb740eabe9afbe4a139b0dc0f364538c4084a2ceecea261d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72fc48963b11d50e130496fe31e2d27969875c90b8b7588bb75287ea0088d589
[INFO] running `Command { std: "docker" "start" "-a" "72fc48963b11d50e130496fe31e2d27969875c90b8b7588bb75287ea0088d589", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling pi_lfstack v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable`
[INFO] [stdout]   --> src/lib.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[cfg(all(feature="unstable", any(target_arch = "x86", target_arch = "x86_64")))]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `unstable` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable`
[INFO] [stdout]   --> src/lib.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[cfg(all(not(feature="unstable"), any(target_arch = "x86", target_arch = "x86_64")))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `unstable` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:124:37
[INFO] [stdout]     |
[INFO] [stdout] 124 | ...                   Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[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] 124 |                                     let _ = Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:171:37
[INFO] [stdout]     |
[INFO] [stdout] 171 | ...                   Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 171 |                                     let _ = Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:213:33
[INFO] [stdout]     |
[INFO] [stdout] 213 | ...                   Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 213 |                                 let _ = Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:253:33
[INFO] [stdout]     |
[INFO] [stdout] 253 | ...                   Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 253 |                                 let _ = Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:307:53
[INFO] [stdout]     |
[INFO] [stdout] 307 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 307 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:319:53
[INFO] [stdout]     |
[INFO] [stdout] 319 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 319 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:323:49
[INFO] [stdout]     |
[INFO] [stdout] 323 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 323 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:334:45
[INFO] [stdout]     |
[INFO] [stdout] 334 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 334 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:352:53
[INFO] [stdout]     |
[INFO] [stdout] 352 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 352 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:363:53
[INFO] [stdout]     |
[INFO] [stdout] 363 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 363 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:367:49
[INFO] [stdout]     |
[INFO] [stdout] 367 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 367 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:379:45
[INFO] [stdout]     |
[INFO] [stdout] 379 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 379 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:432:53
[INFO] [stdout]     |
[INFO] [stdout] 432 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 432 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:444:53
[INFO] [stdout]     |
[INFO] [stdout] 444 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 444 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:448:49
[INFO] [stdout]     |
[INFO] [stdout] 448 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 448 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:459:45
[INFO] [stdout]     |
[INFO] [stdout] 459 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 459 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:477:53
[INFO] [stdout]     |
[INFO] [stdout] 477 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 477 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:488:53
[INFO] [stdout]     |
[INFO] [stdout] 488 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 488 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:492:49
[INFO] [stdout]     |
[INFO] [stdout] 492 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 492 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:504:45
[INFO] [stdout]     |
[INFO] [stdout] 504 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 504 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "72fc48963b11d50e130496fe31e2d27969875c90b8b7588bb75287ea0088d589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72fc48963b11d50e130496fe31e2d27969875c90b8b7588bb75287ea0088d589", kill_on_drop: false }`
[INFO] [stdout] 72fc48963b11d50e130496fe31e2d27969875c90b8b7588bb75287ea0088d589
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9de287a12689a85ee9bb78ee784ae734e6b4017d80f7ed214ce28f2b604dd517
[INFO] running `Command { std: "docker" "start" "-a" "9de287a12689a85ee9bb78ee784ae734e6b4017d80f7ed214ce28f2b604dd517", kill_on_drop: false }`
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable`
[INFO] [stdout]   --> src/lib.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[cfg(all(feature="unstable", any(target_arch = "x86", target_arch = "x86_64")))]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `unstable` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable`
[INFO] [stdout]   --> src/lib.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[cfg(all(not(feature="unstable"), any(target_arch = "x86", target_arch = "x86_64")))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `unstable` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:124:37
[INFO] [stdout]     |
[INFO] [stdout] 124 | ...                   Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[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] 124 |                                     let _ = Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:171:37
[INFO] [stdout]     |
[INFO] [stdout] 171 | ...                   Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 171 |                                     let _ = Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:213:33
[INFO] [stdout]     |
[INFO] [stdout] 213 | ...                   Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 213 |                                 let _ = Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:253:33
[INFO] [stdout]     |
[INFO] [stdout] 253 | ...                   Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 253 |                                 let _ = Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:307:53
[INFO] [stdout]     |
[INFO] [stdout] 307 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 307 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:319:53
[INFO] [stdout]     |
[INFO] [stdout] 319 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 319 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:323:49
[INFO] [stdout]     |
[INFO] [stdout] 323 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 323 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:334:45
[INFO] [stdout]     |
[INFO] [stdout] 334 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 334 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:352:53
[INFO] [stdout]     |
[INFO] [stdout] 352 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 352 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:363:53
[INFO] [stdout]     |
[INFO] [stdout] 363 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 363 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:367:49
[INFO] [stdout]     |
[INFO] [stdout] 367 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 367 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:379:45
[INFO] [stdout]     |
[INFO] [stdout] 379 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 379 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:432:53
[INFO] [stdout]     |
[INFO] [stdout] 432 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 432 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:444:53
[INFO] [stdout]     |
[INFO] [stdout] 444 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 444 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:448:49
[INFO] [stdout]     |
[INFO] [stdout] 448 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 448 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:459:45
[INFO] [stdout]     |
[INFO] [stdout] 459 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 459 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:477:53
[INFO] [stdout]     |
[INFO] [stdout] 477 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 477 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:488:53
[INFO] [stdout]     |
[INFO] [stdout] 488 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 488 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:492:49
[INFO] [stdout]     |
[INFO] [stdout] 492 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 492 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:504:45
[INFO] [stdout]     |
[INFO] [stdout] 504 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 504 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pi_lfstack v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable`
[INFO] [stdout]   --> src/lib.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | #[cfg(all(feature="unstable", any(target_arch = "x86", target_arch = "x86_64")))]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `unstable` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `unstable`
[INFO] [stdout]   --> src/lib.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[cfg(all(not(feature="unstable"), any(target_arch = "x86", target_arch = "x86_64")))]
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `unstable` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `lfstack`
[INFO] [stdout]  --> tests/test.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate lfstack;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> tests/test.rs:258:50
[INFO] [stdout]     |
[INFO] [stdout] 258 |                 cache_clone.lock().unwrap().push((*frame));
[INFO] [stdout]     |                                                  ^      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 258 -                 cache_clone.lock().unwrap().push((*frame));
[INFO] [stdout] 258 +                 cache_clone.lock().unwrap().push(*frame );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:124:37
[INFO] [stdout]     |
[INFO] [stdout] 124 | ...                   Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[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] 124 |                                     let _ = Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> tests/test.rs:297:50
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 cache_clone.lock().unwrap().push((*frame));
[INFO] [stdout]     |                                                  ^      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 297 -                 cache_clone.lock().unwrap().push((*frame));
[INFO] [stdout] 297 +                 cache_clone.lock().unwrap().push(*frame );
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:171:37
[INFO] [stdout]     |
[INFO] [stdout] 171 | ...                   Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 171 |                                     let _ = Box::into_raw(last_frame); //将下一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:213:33
[INFO] [stdout]     |
[INFO] [stdout] 213 | ...                   Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 213 |                                 let _ = Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:253:33
[INFO] [stdout]     |
[INFO] [stdout] 253 | ...                   Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 253 |                                 let _ = Box::into_raw(last_frame); //将上一个顶帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:307:53
[INFO] [stdout]     |
[INFO] [stdout] 307 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 307 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:319:53
[INFO] [stdout]     |
[INFO] [stdout] 319 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 319 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:323:49
[INFO] [stdout]     |
[INFO] [stdout] 323 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 323 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:334:45
[INFO] [stdout]     |
[INFO] [stdout] 334 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 334 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:352:53
[INFO] [stdout]     |
[INFO] [stdout] 352 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 352 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:363:53
[INFO] [stdout]     |
[INFO] [stdout] 363 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 363 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:367:49
[INFO] [stdout]     |
[INFO] [stdout] 367 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 367 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:379:45
[INFO] [stdout]     |
[INFO] [stdout] 379 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 379 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:432:53
[INFO] [stdout]     |
[INFO] [stdout] 432 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 432 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:444:53
[INFO] [stdout]     |
[INFO] [stdout] 444 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 444 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:448:49
[INFO] [stdout]     |
[INFO] [stdout] 448 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 448 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:459:45
[INFO] [stdout]     |
[INFO] [stdout] 459 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 459 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:477:53
[INFO] [stdout]     |
[INFO] [stdout] 477 | ...                   Box::into_raw(next_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 477 |                                                     let _ = Box::into_raw(next_frame);
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:488:53
[INFO] [stdout]     |
[INFO] [stdout] 488 | ...                   Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 488 |                                                     let _ = Box::into_raw(next_frame); //将下一个栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:492:49
[INFO] [stdout]     |
[INFO] [stdout] 492 | ...                   Box::into_raw(last_frame);
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 492 |                                                 let _ = Box::into_raw(last_frame);
[INFO] [stdout]     |                                                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::into_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:504:45
[INFO] [stdout]     |
[INFO] [stdout] 504 | ...                   Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: losing the pointer will leak memory
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 504 |                                             let _ = Box::into_raw(frame); //将当前栈帧转化为栈指针，防止被移除
[INFO] [stdout]     |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/test.rs:190:49
[INFO] [stdout]     |
[INFO] [stdout] 190 |         stack11.collect_from_top(Arc::new(move |frame| {
[INFO] [stdout]     |                                                 ^^^^^
[INFO] [stdout] 191 |             cache_copy.lock().unwrap().push(frame.clone());
[INFO] [stdout]     |                                                   ----- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 190 |         stack11.collect_from_top(Arc::new(move |frame: /* Type */| {
[INFO] [stdout]     |                                                      ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/test.rs:219:52
[INFO] [stdout]     |
[INFO] [stdout] 219 |         stack14.collect_from_bottom(Arc::new(move |frame| {
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout] 220 |             cache_copy.lock().unwrap().push(frame.clone());
[INFO] [stdout]     |                                                   ----- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 219 |         stack14.collect_from_bottom(Arc::new(move |frame: /* Type */| {
[INFO] [stdout]     |                                                         ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/test.rs:268:50
[INFO] [stdout]     |
[INFO] [stdout] 268 |     assert_eq!(cache.lock().unwrap().iter().map(|x| { x.clone() }).sum::<i32>(), (0..1000000).map(|x| { x.clone() }).sum());
[INFO] [stdout]     |                                                  ^      ----- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 268 |     assert_eq!(cache.lock().unwrap().iter().map(|x: /* Type */| { x.clone() }).sum::<i32>(), (0..1000000).map(|x| { x.clone() }).sum());
[INFO] [stdout]     |                                                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> tests/test.rs:307:50
[INFO] [stdout]     |
[INFO] [stdout] 307 |     assert_eq!(cache.lock().unwrap().iter().map(|x| { x.clone() }).sum::<i32>(), (0..1000000).map(|x| { x.clone() }).sum());
[INFO] [stdout]     |                                                  ^      ----- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type
[INFO] [stdout]     |
[INFO] [stdout] 307 |     assert_eq!(cache.lock().unwrap().iter().map(|x: /* Type */| { x.clone() }).sum::<i32>(), (0..1000000).map(|x| { x.clone() }).sum());
[INFO] [stdout]     |                                                   ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0463.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pi_lfstack` (test "test") due to 5 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9de287a12689a85ee9bb78ee784ae734e6b4017d80f7ed214ce28f2b604dd517", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9de287a12689a85ee9bb78ee784ae734e6b4017d80f7ed214ce28f2b604dd517", kill_on_drop: false }`
[INFO] [stdout] 9de287a12689a85ee9bb78ee784ae734e6b4017d80f7ed214ce28f2b604dd517