[INFO] cloning repository https://github.com/rmw-lib/mdbx
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rmw-lib/mdbx" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frmw-lib%2Fmdbx", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frmw-lib%2Fmdbx'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8fc1c54f8044264819321a38ab7b2162c7273f54
[INFO] testing rmw-lib/mdbx against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frmw-lib%2Fmdbx" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rmw-lib/mdbx 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 git repo https://github.com/rmw-lib/mdbx
[INFO] finished tweaking git repo https://github.com/rmw-lib/mdbx
[INFO] tweaked toml for git repo https://github.com/rmw-lib/mdbx written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/rmw-lib/mdbx 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]     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 mdbx-ffi v0.0.5
[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" "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] 048eaa5e89d94c9e51779567ebf59808b9bc71936467f53118b291b9420d58fb
[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" "048eaa5e89d94c9e51779567ebf59808b9bc71936467f53118b291b9420d58fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "048eaa5e89d94c9e51779567ebf59808b9bc71936467f53118b291b9420d58fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "048eaa5e89d94c9e51779567ebf59808b9bc71936467f53118b291b9420d58fb", kill_on_drop: false }`
[INFO] [stdout] 048eaa5e89d94c9e51779567ebf59808b9bc71936467f53118b291b9420d58fb
[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" "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] 2e3feff04725fa0369f1707d18bc67a4f5ada83bd95b5243246f55f0a3fdc1eb
[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" "2e3feff04725fa0369f1707d18bc67a4f5ada83bd95b5243246f55f0a3fdc1eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling bindgen v0.59.2
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling mdbx v0.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]    Compiling mdbx-proc v0.1.1
[INFO] [stderr]    Compiling clang-sys v1.3.0
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling libloading v0.7.2
[INFO] [stderr]    Compiling regex v1.5.4
[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/mdbx-proc-0.1.1/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span)]
[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 `mdbx-proc` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2e3feff04725fa0369f1707d18bc67a4f5ada83bd95b5243246f55f0a3fdc1eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3feff04725fa0369f1707d18bc67a4f5ada83bd95b5243246f55f0a3fdc1eb", kill_on_drop: false }`
[INFO] [stdout] 2e3feff04725fa0369f1707d18bc67a4f5ada83bd95b5243246f55f0a3fdc1eb