[INFO] fetching crate drone-stm32l4 0.1.2...
[INFO] documenting drone-stm32l4-0.1.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate drone-stm32l4 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate drone-stm32l4 0.1.2 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 drone-stm32l4 0.1.2
[INFO] finished tweaking crates.io crate drone-stm32l4 0.1.2
[INFO] tweaked toml for crates.io crate drone-stm32l4 0.1.2 written to /workspace/builds/worker-0/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--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 drone-test v0.1.2
[INFO] [stderr]   Downloaded drone-core v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 9b153be643802ade9d39201745493b48885eb2e44a938f25657f86296cf9555a
[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" "9b153be643802ade9d39201745493b48885eb2e44a938f25657f86296cf9555a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b153be643802ade9d39201745493b48885eb2e44a938f25657f86296cf9555a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b153be643802ade9d39201745493b48885eb2e44a938f25657f86296cf9555a", kill_on_drop: false }`
[INFO] [stdout] 9b153be643802ade9d39201745493b48885eb2e44a938f25657f86296cf9555a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 6c5da0cd3fffd94d0ed07d3537f3db21f9c5702d1b8b878231dc8539163e914d
[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" "6c5da0cd3fffd94d0ed07d3537f3db21f9c5702d1b8b878231dc8539163e914d", kill_on_drop: false }`
[INFO] [stderr]     Checking drone-core v0.1.2
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/drone-core-0.1.2/src/reg/pointer.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |           asm!("
[INFO] [stdout]    |           ^---
[INFO] [stdout]    |           |
[INFO] [stdout]    |  _________help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 92 | |           ldrex $0, [$1]
[INFO] [stdout] 93 | |         " : "=r"(value)
[INFO] [stdout] 94 | |           : "r"(address)
[INFO] [stdout] 95 | |           :
[INFO] [stdout] 96 | |           : "volatile");
[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/drone-core-0.1.2/src/reg/pointer.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |           asm!("
[INFO] [stdout]     |           ^---
[INFO] [stdout]     |           |
[INFO] [stdout]     |  _________help: replace with: `llvm_asm!`
[INFO] [stdout]     | |
[INFO] [stdout] 101 | |           strex $0, $1, [$2]
[INFO] [stdout] 102 | |         " : "=r"(status)
[INFO] [stdout] 103 | |           : "r"(value), "r"(address)
[INFO] [stdout] 104 | |           :
[INFO] [stdout] 105 | |           : "volatile");
[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/drone-core-0.1.2/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![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/drone-core-0.1.2/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `drone-core`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "6c5da0cd3fffd94d0ed07d3537f3db21f9c5702d1b8b878231dc8539163e914d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c5da0cd3fffd94d0ed07d3537f3db21f9c5702d1b8b878231dc8539163e914d", kill_on_drop: false }`
[INFO] [stdout] 6c5da0cd3fffd94d0ed07d3537f3db21f9c5702d1b8b878231dc8539163e914d