[INFO] cloning repository https://github.com/jeremyBanks/tprime
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeremyBanks/tprime" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjeremyBanks%2Ftprime", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjeremyBanks%2Ftprime'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4e7eef26564a3dce9aea25782ed8eb79be303a11
[INFO] documenting jeremyBanks/tprime against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FjeremyBanks%2Ftprime" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeremyBanks/tprime on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jeremyBanks/tprime
[INFO] finished tweaking git repo https://github.com/jeremyBanks/tprime
[INFO] tweaked toml for git repo https://github.com/jeremyBanks/tprime written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jeremyBanks/tprime already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.6.6
[INFO] [stderr]   Downloaded memchr v2.0.1
[INFO] [stderr]   Downloaded termcolor v1.0.1
[INFO] [stderr]   Downloaded quote v0.6.5
[INFO] [stderr]   Downloaded log v0.4.3
[INFO] [stderr]   Downloaded thread_local v0.3.5
[INFO] [stderr]   Downloaded rand_core v0.2.1
[INFO] [stderr]   Downloaded serde_derive v1.0.71
[INFO] [stderr]   Downloaded utf8-ranges v1.0.0
[INFO] [stderr]   Downloaded cfg-if v0.1.4
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.15
[INFO] [stderr]   Downloaded proc-macro2 v0.4.9
[INFO] [stderr]   Downloaded regex v1.0.2
[INFO] [stderr]   Downloaded itoa v0.4.2
[INFO] [stderr]   Downloaded serde_json v1.0.24
[INFO] [stderr]   Downloaded env_logger v0.5.12
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.15
[INFO] [stderr]   Downloaded wincolor v1.0.0
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.15
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.15
[INFO] [stderr]   Downloaded serdebug v1.0.5
[INFO] [stderr]   Downloaded web-sys v0.0.1
[INFO] [stderr]   Downloaded syn v0.14.7
[INFO] [stderr]   Downloaded serde v1.0.71
[INFO] [stderr]   Downloaded version_check v0.1.4
[INFO] [stderr]   Downloaded serdebug_derive v1.0.0
[INFO] [stderr]   Downloaded js-sys v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", 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] b617194ec32c7484b8dbcc84b8b24fbbd8a4c2db3f34204b01a0cbcc346fe54d
[INFO] running `Command { std: "docker" "start" "-a" "b617194ec32c7484b8dbcc84b8b24fbbd8a4c2db3f34204b01a0cbcc346fe54d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b617194ec32c7484b8dbcc84b8b24fbbd8a4c2db3f34204b01a0cbcc346fe54d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b617194ec32c7484b8dbcc84b8b24fbbd8a4c2db3f34204b01a0cbcc346fe54d", kill_on_drop: false }`
[INFO] [stdout] b617194ec32c7484b8dbcc84b8b24fbbd8a4c2db3f34204b01a0cbcc346fe54d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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-2020-10-09" "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] 9c41d70fa2417685763eae55d85e946874e5b713a3ffce03c55ff8e332fcc93c
[INFO] running `Command { std: "docker" "start" "-a" "9c41d70fa2417685763eae55d85e946874e5b713a3ffce03c55ff8e332fcc93c", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]    Compiling serde v1.0.71
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.15
[INFO] [stderr]    Compiling itoa v0.4.2
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]     Checking termcolor v1.0.1
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking web-sys v0.0.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling serdebug v1.0.5
[INFO] [stderr]     Checking thread_local v0.3.5
[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/proc-macro2-0.4.9/src/lib.rs:47:34
[INFO] [stdout]    |
[INFO] [stdout] 47 | #![cfg_attr(feature = "nightly", feature(proc_macro_raw_ident, proc_macro_span))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_def_site'
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.9/src/unstable.rs:347:27
[INFO] [stdout]     |
[INFO] [stdout] 347 |             Span::Nightly(proc_macro::Span::def_site())
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #54724 <https://github.com/rust-lang/rust/issues/54724> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2`
[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" "9c41d70fa2417685763eae55d85e946874e5b713a3ffce03c55ff8e332fcc93c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c41d70fa2417685763eae55d85e946874e5b713a3ffce03c55ff8e332fcc93c", kill_on_drop: false }`
[INFO] [stdout] 9c41d70fa2417685763eae55d85e946874e5b713a3ffce03c55ff8e332fcc93c
