[INFO] cloning repository https://github.com/bschwind/mqtt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bschwind/mqtt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36acbe04a81231bfb4c7c24fe654bb7d2b7fd7da
[INFO] documenting bschwind/mqtt against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bschwind/mqtt on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bschwind/mqtt
[INFO] finished tweaking git repo https://github.com/bschwind/mqtt
[INFO] tweaked toml for git repo https://github.com/bschwind/mqtt written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/bschwind/mqtt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d526dcf2332ab4b733e4399037b997e9088375e6a0e2006df4e5803a68d1c40
[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" "6d526dcf2332ab4b733e4399037b997e9088375e6a0e2006df4e5803a68d1c40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d526dcf2332ab4b733e4399037b997e9088375e6a0e2006df4e5803a68d1c40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d526dcf2332ab4b733e4399037b997e9088375e6a0e2006df4e5803a68d1c40", kill_on_drop: false }`
[INFO] [stdout] 6d526dcf2332ab4b733e4399037b997e9088375e6a0e2006df4e5803a68d1c40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9f96ed3465bf5bf2499c98b927143b9f8906807de29c8469d1f05631dc83d869
[INFO] running `Command { std: "docker" "start" "-a" "9f96ed3465bf5bf2499c98b927143b9f8906807de29c8469d1f05631dc83d869", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.15
[INFO] [stderr]     Checking bytes v0.3.0
[INFO] [stderr]     Checking nix v0.6.0
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking mio v0.6.0
[INFO] [stderr]  Documenting mqtt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0437]: type `Err` is not a member of trait `TryFrom`
[INFO] [stdout]   --> src/protocol/control_packet_type.rs:24:2
[INFO] [stdout]    |
[INFO] [stdout] 24 |     type Err = MqttParseError;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ not a member of trait `TryFrom`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_from)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0437, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0437`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `mqtt`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name mqtt src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-f7d5436cfa12bfe4.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-a6dff05ce62e008d.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-f89a111a6e47c4a8.rmeta --extern slab=/opt/rustwide/target/debug/deps/libslab-00e880f428df9b89.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "9f96ed3465bf5bf2499c98b927143b9f8906807de29c8469d1f05631dc83d869", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f96ed3465bf5bf2499c98b927143b9f8906807de29c8469d1f05631dc83d869", kill_on_drop: false }`
[INFO] [stdout] 9f96ed3465bf5bf2499c98b927143b9f8906807de29c8469d1f05631dc83d869
