[INFO] fetching crate dtd-rs 0.1.0-alpha2...
[INFO] testing dtd-rs-0.1.0-alpha2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate dtd-rs 0.1.0-alpha2 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate dtd-rs 0.1.0-alpha2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dtd-rs 0.1.0-alpha2
[INFO] finished tweaking crates.io crate dtd-rs 0.1.0-alpha2
[INFO] tweaked toml for crates.io crate dtd-rs 0.1.0-alpha2 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate dtd-rs 0.1.0-alpha2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nom-tracable-macros v0.7.0
[INFO] [stderr]   Downloaded nom_locate v2.1.0
[INFO] [stderr]   Downloaded nom-tracable v0.7.0
[INFO] [stderr]   Downloaded nom_locate v3.0.2
[INFO] [stderr]   Downloaded nom-greedyerror v0.3.1
[INFO] [stderr]   Downloaded dtd-parser v0.1.0-alpha3
[INFO] [stderr]   Downloaded dtd-macro v0.1.0-alpha2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c259d306c8dc2797655a55df79ed7de38348ba105f8c4ee21c9a1e4c2b3f6825
[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" "c259d306c8dc2797655a55df79ed7de38348ba105f8c4ee21c9a1e4c2b3f6825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c259d306c8dc2797655a55df79ed7de38348ba105f8c4ee21c9a1e4c2b3f6825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c259d306c8dc2797655a55df79ed7de38348ba105f8c4ee21c9a1e4c2b3f6825", kill_on_drop: false }`
[INFO] [stdout] c259d306c8dc2797655a55df79ed7de38348ba105f8c4ee21c9a1e4c2b3f6825
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ce16d1eda1599b76a0efb770ad6c0f767345d184579b8e51d36ce42c44adc11
[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" "1ce16d1eda1599b76a0efb770ad6c0f767345d184579b8e51d36ce42c44adc11", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling bytecount v0.6.2
[INFO] [stderr]    Compiling bytecount v0.3.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling bitvec v0.19.5
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling nom_locate v1.0.0
[INFO] [stderr]    Compiling nom_locate v2.1.0
[INFO] [stderr]    Compiling nom_locate v3.0.2
[INFO] [stderr]    Compiling nom-greedyerror v0.3.1
[INFO] [stderr]    Compiling nom-tracable-macros v0.7.0
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling nom-tracable v0.7.0
[INFO] [stderr]    Compiling dtd-parser v0.1.0-alpha3
[INFO] [stderr]    Compiling dtd-macro v0.1.0-alpha2
[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/dtd-macro-0.1.0-alpha2/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dtd-macro` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1ce16d1eda1599b76a0efb770ad6c0f767345d184579b8e51d36ce42c44adc11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ce16d1eda1599b76a0efb770ad6c0f767345d184579b8e51d36ce42c44adc11", kill_on_drop: false }`
[INFO] [stdout] 1ce16d1eda1599b76a0efb770ad6c0f767345d184579b8e51d36ce42c44adc11