[INFO] fetching crate dbui-database 0.0.64...
[INFO] checking dbui-database-0.0.64 against beta for pr-78714
[INFO] extracting crate dbui-database 0.0.64 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate dbui-database 0.0.64 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dbui-database 0.0.64
[INFO] finished tweaking crates.io crate dbui-database 0.0.64
[INFO] tweaked toml for crates.io crate dbui-database 0.0.64 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39f418cdb5905e5b00ff230b8dc8df18058bfd0b6df10469123b1b1d757504d9
[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" "39f418cdb5905e5b00ff230b8dc8df18058bfd0b6df10469123b1b1d757504d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39f418cdb5905e5b00ff230b8dc8df18058bfd0b6df10469123b1b1d757504d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39f418cdb5905e5b00ff230b8dc8df18058bfd0b6df10469123b1b1d757504d9", kill_on_drop: false }`
[INFO] [stdout] 39f418cdb5905e5b00ff230b8dc8df18058bfd0b6df10469123b1b1d757504d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 055a955366bea6d0fad34375fbe0c091e4d556246dbb4eb6161b26af5806d2d2
[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" "055a955366bea6d0fad34375fbe0c091e4d556246dbb4eb6161b26af5806d2d2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking md5 v0.3.8
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]     Checking futures-channel v0.3.8
[INFO] [stderr]     Checking eui48 v0.4.6
[INFO] [stderr]     Checking crc-any v2.3.5
[INFO] [stderr]     Checking base64-url v1.4.7
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking geo-types v0.4.3
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking hmac v0.5.0
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking short-crypt v1.0.23
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking socket2 v0.3.16
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling cc v1.0.62
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.5
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking postgres-protocol v0.3.2
[INFO] [stderr]     Checking r2d2 v0.8.9
[INFO] [stderr]     Checking postgres-shared v0.4.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling libgit2-sys v0.9.2
[INFO] [stderr]     Checking postgres-protocol v0.5.0-alpha.2
[INFO] [stderr]     Checking postgres v0.15.2
[INFO] [stderr]     Checking postgres-types v0.1.0-alpha.2
[INFO] [stderr]     Checking r2d2_postgres v0.14.0
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tokio-postgres v0.5.0-alpha.2
[INFO] [stderr]    Compiling git2 v0.10.2
[INFO] [stderr]     Checking postgres v0.17.0-alpha.2
[INFO] [stderr]    Compiling built v0.3.2
[INFO] [stderr]    Compiling dbui-core v0.0.64
[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/dbui-core-0.0.64/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_expect_none)]
[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/dbui-core-0.0.64/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(fn_traits)]
[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/dbui-core-0.0.64/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(unboxed_closures)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `dbui-core`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "055a955366bea6d0fad34375fbe0c091e4d556246dbb4eb6161b26af5806d2d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "055a955366bea6d0fad34375fbe0c091e4d556246dbb4eb6161b26af5806d2d2", kill_on_drop: false }`
[INFO] [stdout] 055a955366bea6d0fad34375fbe0c091e4d556246dbb4eb6161b26af5806d2d2