[INFO] fetching crate context-allocator 0.2.3...
[INFO] documenting context-allocator-0.2.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate context-allocator 0.2.3 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate context-allocator 0.2.3 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate context-allocator 0.2.3
[INFO] finished tweaking crates.io crate context-allocator 0.2.3
[INFO] tweaked toml for crates.io crate context-allocator 0.2.3 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80ff6f9d105869095834f7b863c58cfb207cab4dc13abc203b8c4cf345c78205
[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" "80ff6f9d105869095834f7b863c58cfb207cab4dc13abc203b8c4cf345c78205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80ff6f9d105869095834f7b863c58cfb207cab4dc13abc203b8c4cf345c78205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80ff6f9d105869095834f7b863c58cfb207cab4dc13abc203b8c4cf345c78205", kill_on_drop: false }`
[INFO] [stdout] 80ff6f9d105869095834f7b863c58cfb207cab4dc13abc203b8c4cf345c78205
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9b2dfbd0e6c8f78cd9bc13b9ecbaf3ef6982ed2a15c9c5327aed157dd9ce92f
[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" "c9b2dfbd0e6c8f78cd9bc13b9ecbaf3ef6982ed2a15c9c5327aed157dd9ce92f", kill_on_drop: false }`
[INFO] [stderr]     Checking likely v0.1.0
[INFO] [stderr]     Checking syscall-alt v0.0.14
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/syscalls/linux_like/x86_64/syscall0.rs:9:2
[INFO] [stdout]    |
[INFO] [stdout] 9  |       asm!
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 10 | |     (
[INFO] [stdout] 11 | |         "syscall"
[INFO] [stdout] 12 | |         : "={rax}"(result)
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |         : "volatile"
[INFO] [stdout] 16 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/syscalls/linux_like/x86_64/syscall1.rs:9:2
[INFO] [stdout]    |
[INFO] [stdout] 9  |       asm!
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 10 | |     (
[INFO] [stdout] 11 | |         "syscall"
[INFO] [stdout] 12 | |         : "={rax}"(result)
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |         : "volatile"
[INFO] [stdout] 16 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/syscalls/linux_like/x86_64/syscall2.rs:9:2
[INFO] [stdout]    |
[INFO] [stdout] 9  |       asm!
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 10 | |     (
[INFO] [stdout] 11 | |         "syscall"
[INFO] [stdout] 12 | |         : "={rax}"(result)
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |         : "volatile"
[INFO] [stdout] 16 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/syscalls/linux_like/x86_64/syscall3.rs:9:2
[INFO] [stdout]    |
[INFO] [stdout] 9  |       asm!
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 10 | |     (
[INFO] [stdout] 11 | |         "syscall"
[INFO] [stdout] 12 | |         : "={rax}"(result)
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |         : "volatile"
[INFO] [stdout] 16 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/syscalls/linux_like/x86_64/syscall4.rs:9:2
[INFO] [stdout]    |
[INFO] [stdout] 9  |       asm!
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 10 | |     (
[INFO] [stdout] 11 | |         "syscall"
[INFO] [stdout] 12 | |         : "={rax}"(result)
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |         : "volatile"
[INFO] [stdout] 16 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/syscalls/linux_like/x86_64/syscall5.rs:9:2
[INFO] [stdout]    |
[INFO] [stdout] 9  |       asm!
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 10 | |     (
[INFO] [stdout] 11 | |         "syscall"
[INFO] [stdout] 12 | |         : "={rax}"(result)
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |         : "volatile"
[INFO] [stdout] 16 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/syscalls/linux_like/x86_64/syscall6.rs:9:2
[INFO] [stdout]    |
[INFO] [stdout] 9  |       asm!
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 10 | |     (
[INFO] [stdout] 11 | |         "syscall"
[INFO] [stdout] 12 | |         : "={rax}"(result)
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |         : "volatile"
[INFO] [stdout] 16 | |     );
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(associated_consts)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscall-alt-0.0.14/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syscall-alt`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c9b2dfbd0e6c8f78cd9bc13b9ecbaf3ef6982ed2a15c9c5327aed157dd9ce92f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9b2dfbd0e6c8f78cd9bc13b9ecbaf3ef6982ed2a15c9c5327aed157dd9ce92f", kill_on_drop: false }`
[INFO] [stdout] c9b2dfbd0e6c8f78cd9bc13b9ecbaf3ef6982ed2a15c9c5327aed157dd9ce92f