[INFO] fetching crate tdn_permission 0.2.0...
[INFO] testing tdn_permission-0.2.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate tdn_permission 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate tdn_permission 0.2.0 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 tdn_permission 0.2.0
[INFO] finished tweaking crates.io crate tdn_permission 0.2.0
[INFO] tweaked toml for crates.io crate tdn_permission 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate tdn_permission 0.2.0 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 event-listener v2.4.0
[INFO] [stderr]   Downloaded fastrand v1.3.5
[INFO] [stderr]   Downloaded blocking v1.0.0
[INFO] [stderr]   Downloaded wepoll-sys-stjepang v1.0.8
[INFO] [stderr]   Downloaded futures-lite v1.4.0
[INFO] [stderr]   Downloaded async-fs v1.3.0
[INFO] [stderr]   Downloaded async-task v3.0.0
[INFO] [stderr]   Downloaded subtle v2.3.0
[INFO] [stderr]   Downloaded bit-vec v0.6.2
[INFO] [stderr]   Downloaded sha3 v0.8.2
[INFO] [stderr]   Downloaded ed25519-dalek v1.0.0
[INFO] [stderr]   Downloaded async-tungstenite v0.4.2
[INFO] [stderr]   Downloaded ed25519 v1.0.2
[INFO] [stderr]   Downloaded sha2 v0.9.1
[INFO] [stderr]   Downloaded tungstenite v0.10.1
[INFO] [stderr]   Downloaded async-executor v1.1.1
[INFO] [stderr]   Downloaded block-modes v0.6.1
[INFO] [stderr]   Downloaded async-rwlock v1.1.0
[INFO] [stderr]   Downloaded aes-soft v0.5.0
[INFO] [stderr]   Downloaded sled v0.34.4
[INFO] [stderr]   Downloaded futures-executor v0.3.5
[INFO] [stderr]   Downloaded tdn_types v0.2.0
[INFO] [stderr]   Downloaded rckad v0.0.6
[INFO] [stderr]   Downloaded chamomile v0.2.0
[INFO] [stderr]   Downloaded async-io v1.1.1
[INFO] [stderr]   Downloaded tdn v0.2.0
[INFO] [stderr]   Downloaded futures-macro v0.3.5
[INFO] [stderr]   Downloaded futures v0.3.5
[INFO] [stderr]   Downloaded async-mutex v1.3.0
[INFO] [stderr]   Downloaded instant v0.1.6
[INFO] [stderr]   Downloaded async-barrier v1.0.1
[INFO] [stderr]   Downloaded async-semaphore v1.1.0
[INFO] [stderr]   Downloaded zeroize v1.1.1
[INFO] [stderr]   Downloaded x25519-dalek v1.1.0
[INFO] [stderr]   Downloaded async-lock v2.1.3
[INFO] [stderr]   Downloaded polling v1.0.2
[INFO] [stderr]   Downloaded async-net v1.3.0
[INFO] [stderr]   Downloaded smol v1.0.1
[INFO] [stderr]   Downloaded serde_json v1.0.44
[INFO] [stderr]   Downloaded async-process v1.0.0
[INFO] [stderr]   Downloaded cc v1.0.48
[INFO] [stderr]   Downloaded synstructure v0.12.3
[INFO] [stderr]   Downloaded async-channel v1.4.2
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8ae6e53dbb95978c3e3577b7f2bbccf5143600d6458746e78786f9778fdd883
[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" "b8ae6e53dbb95978c3e3577b7f2bbccf5143600d6458746e78786f9778fdd883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8ae6e53dbb95978c3e3577b7f2bbccf5143600d6458746e78786f9778fdd883", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8ae6e53dbb95978c3e3577b7f2bbccf5143600d6458746e78786f9778fdd883", kill_on_drop: false }`
[INFO] [stdout] b8ae6e53dbb95978c3e3577b7f2bbccf5143600d6458746e78786f9778fdd883
[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" "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] 3cbace1e43cf6af2c9a420f51a80c2387da5fe689b27198552f81beab233e375
[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" "3cbace1e43cf6af2c9a420f51a80c2387da5fe689b27198552f81beab233e375", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling event-listener v2.4.0
[INFO] [stderr]    Compiling postcard-cobs v0.1.5-pre
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling async-channel v1.4.2
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling chamomile_types v0.2.0
[INFO] [stderr]    Compiling serde_json v1.0.44
[INFO] [stderr]    Compiling postcard v0.5.1
[INFO] [stderr]    Compiling tdn_types v0.2.0
[INFO] [stderr]    Compiling tdn_permission v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[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 `tdn_permission`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "3cbace1e43cf6af2c9a420f51a80c2387da5fe689b27198552f81beab233e375", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cbace1e43cf6af2c9a420f51a80c2387da5fe689b27198552f81beab233e375", kill_on_drop: false }`
[INFO] [stdout] 3cbace1e43cf6af2c9a420f51a80c2387da5fe689b27198552f81beab233e375