[INFO] cloning repository https://github.com/jchapman127/uni-project-svm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jchapman127/uni-project-svm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjchapman127%2Funi-project-svm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjchapman127%2Funi-project-svm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9485de959ab4d232d7fc45e3ca104db257833636
[INFO] documenting jchapman127/uni-project-svm against 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjchapman127%2Funi-project-svm" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jchapman127/uni-project-svm on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jchapman127/uni-project-svm
[INFO] finished tweaking git repo https://github.com/jchapman127/uni-project-svm
[INFO] tweaked toml for git repo https://github.com/jchapman127/uni-project-svm written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jchapman127/uni-project-svm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 308956e42d1c2e6f66ef8a1bf06a43ad57ae0375aa3975b7f915926acc617dd3
[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" "308956e42d1c2e6f66ef8a1bf06a43ad57ae0375aa3975b7f915926acc617dd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "308956e42d1c2e6f66ef8a1bf06a43ad57ae0375aa3975b7f915926acc617dd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "308956e42d1c2e6f66ef8a1bf06a43ad57ae0375aa3975b7f915926acc617dd3", kill_on_drop: false }`
[INFO] [stdout] 308956e42d1c2e6f66ef8a1bf06a43ad57ae0375aa3975b7f915926acc617dd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1035e8d554a66e78fdc231a329ab9d64952e5151c3fee5ec882e92b3b465314
[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" "e1035e8d554a66e78fdc231a329ab9d64952e5151c3fee5ec882e92b3b465314", kill_on_drop: false }`
[INFO] [stderr]     Checking vec_map v0.7.0
[INFO] [stderr]     Checking bitflags v0.8.2
[INFO] [stderr]     Checking enum_traits v1.0.0 (https://github.com/Lolirofle/enum_traits#de2cdb22)
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking term_size v0.2.3
[INFO] [stderr]    Compiling syn v0.11.9
[INFO] [stderr]     Checking clap v2.23.1
[INFO] [stderr]    Compiling enum_traits_macros v3.0.0 (https://github.com/Lolirofle/enum_traits#de2cdb22)
[INFO] [stderr]  Documenting simple-virtual-machine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.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 2 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 document `simple-virtual-machine`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name svm src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-4a226ffe063cdeac.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-5e5742212cfb99d8.rmeta --extern enum_traits=/opt/rustwide/target/debug/deps/libenum_traits-99526fa7f05a05d7.rmeta --extern enum_traits_macros=/opt/rustwide/target/debug/deps/libenum_traits_macros-f89a90592efe08e3.so --extern nom=/opt/rustwide/target/debug/deps/libnom-513ddde9a9cf85e6.rmeta --extern vec_map=/opt/rustwide/target/debug/deps/libvec_map-73f2f19d6ad71e74.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "e1035e8d554a66e78fdc231a329ab9d64952e5151c3fee5ec882e92b3b465314", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1035e8d554a66e78fdc231a329ab9d64952e5151c3fee5ec882e92b3b465314", kill_on_drop: false }`
[INFO] [stdout] e1035e8d554a66e78fdc231a329ab9d64952e5151c3fee5ec882e92b3b465314