[INFO] cloning repository https://github.com/jonathanGB/mdb-write-proxy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonathanGB/mdb-write-proxy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjonathanGB%2Fmdb-write-proxy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjonathanGB%2Fmdb-write-proxy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b9831dba54ff92232b6f8f3acf6a889bcea1543
[INFO] documenting jonathanGB/mdb-write-proxy against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjonathanGB%2Fmdb-write-proxy" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonathanGB/mdb-write-proxy 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 git repo https://github.com/jonathanGB/mdb-write-proxy
[INFO] finished tweaking git repo https://github.com/jonathanGB/mdb-write-proxy
[INFO] tweaked toml for git repo https://github.com/jonathanGB/mdb-write-proxy written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/jonathanGB/mdb-write-proxy already has a lockfile, it will not be regenerated
[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]     Updating git repository `https://github.com/jonathanGB/noria/`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-bincode v0.5.1
[INFO] [stderr]   Downloaded rust_decimal v1.4.1
[INFO] [stderr]   Downloaded sqlparser v0.5.0
[INFO] [stderr]   Downloaded zookeeper v0.5.9
[INFO] [stderr]   Downloaded arccstr v1.3.0
[INFO] [stderr]   Downloaded zookeeper_derive v0.4.1
[INFO] [stderr]   Downloaded assert_infrequent v0.1.0
[INFO] [stderr]   Downloaded tokio-tower v0.3.6
[INFO] [stderr]   Downloaded mysql_common v0.21.0
[INFO] [stderr]   Downloaded mysql_async v0.23.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 641ad7361a13ccc157210efef75b3b67fbd42c31fdedbc80325b6730668b6b33
[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" "641ad7361a13ccc157210efef75b3b67fbd42c31fdedbc80325b6730668b6b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "641ad7361a13ccc157210efef75b3b67fbd42c31fdedbc80325b6730668b6b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "641ad7361a13ccc157210efef75b3b67fbd42c31fdedbc80325b6730668b6b33", kill_on_drop: false }`
[INFO] [stdout] 641ad7361a13ccc157210efef75b3b67fbd42c31fdedbc80325b6730668b6b33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] d3d7875d9a3e04d4b3f8123e4119b0bfca3d25a93b6c364b19b148d277fac98d
[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" "d3d7875d9a3e04d4b3f8123e4119b0bfca3d25a93b6c364b19b148d277fac98d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking tower-layer v0.3.0
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]     Checking mio-named-pipes v0.1.6
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.36
[INFO] [stderr]     Checking tower-make v0.3.0
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]     Checking sqlparser v0.5.0
[INFO] [stderr]    Compiling lexical-core v0.6.2
[INFO] [stderr]    Compiling lexical v4.0.0
[INFO] [stderr]     Checking openssl-sys v0.9.55
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking openssl v0.10.29
[INFO] [stderr]     Checking ahash v0.3.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking assert_infrequent v0.1.0
[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/assert_infrequent-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[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 `assert_infrequent`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d3d7875d9a3e04d4b3f8123e4119b0bfca3d25a93b6c364b19b148d277fac98d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3d7875d9a3e04d4b3f8123e4119b0bfca3d25a93b6c364b19b148d277fac98d", kill_on_drop: false }`
[INFO] [stdout] d3d7875d9a3e04d4b3f8123e4119b0bfca3d25a93b6c364b19b148d277fac98d