[INFO] fetching crate detour 0.7.1...
[INFO] testing detour-0.7.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate detour 0.7.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate detour 0.7.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate detour 0.7.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate detour 0.7.1
[INFO] tweaked toml for crates.io crate detour 0.7.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate detour 0.7.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded region v2.1.2
[INFO] [stderr]   Downloaded mmap-fixed v0.1.5
[INFO] [stderr]   Downloaded slice-pool v0.4.1
[INFO] [stderr]   Downloaded libudis86-sys v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b1f4e63248e618e445f3f82caa0ee4c2bc826f48c6556a6f032c4a9fc097092
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0b1f4e63248e618e445f3f82caa0ee4c2bc826f48c6556a6f032c4a9fc097092", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b1f4e63248e618e445f3f82caa0ee4c2bc826f48c6556a6f032c4a9fc097092", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b1f4e63248e618e445f3f82caa0ee4c2bc826f48c6556a6f032c4a9fc097092", kill_on_drop: false }`
[INFO] [stdout] 0b1f4e63248e618e445f3f82caa0ee4c2bc826f48c6556a6f032c4a9fc097092
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 416f8cca97fca9ca57a2f326335dc4375a9fbed475a34b98cf17fe6b176ec14a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "416f8cca97fca9ca57a2f326335dc4375a9fbed475a34b98cf17fe6b176ec14a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling slice-pool v0.4.1
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling libudis86-sys v0.2.1
[INFO] [stderr]    Compiling mmap-fixed v0.1.5
[INFO] [stderr]    Compiling region v2.1.2
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling detour v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "nightly", feature(const_fn, unboxed_closures, abi_thiscall))]
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicPtr::<T>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/detours/statik.rs:108:21
[INFO] [stdout]     |
[INFO] [stdout] 108 |     if !self.detour.compare_and_swap(ptr::null_mut(), &mut *detour, Ordering::SeqCst).is_null() {
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `detour`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "416f8cca97fca9ca57a2f326335dc4375a9fbed475a34b98cf17fe6b176ec14a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "416f8cca97fca9ca57a2f326335dc4375a9fbed475a34b98cf17fe6b176ec14a", kill_on_drop: false }`
[INFO] [stdout] 416f8cca97fca9ca57a2f326335dc4375a9fbed475a34b98cf17fe6b176ec14a