[INFO] cloning repository https://github.com/aesir-vanir/tyr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aesir-vanir/tyr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faesir-vanir%2Ftyr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faesir-vanir%2Ftyr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c46aa77affa69ad605ae2f19b87357b73c36723
[INFO] documenting aesir-vanir/tyr 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%2Faesir-vanir%2Ftyr" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aesir-vanir/tyr 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/aesir-vanir/tyr
[INFO] finished tweaking git repo https://github.com/aesir-vanir/tyr
[INFO] tweaked toml for git repo https://github.com/aesir-vanir/tyr written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/aesir-vanir/tyr 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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 67e340105a157cf942ccf977f7bb3a4e5522a10cbb1fc555aaaf6675c7991b98
[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" "67e340105a157cf942ccf977f7bb3a4e5522a10cbb1fc555aaaf6675c7991b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "67e340105a157cf942ccf977f7bb3a4e5522a10cbb1fc555aaaf6675c7991b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67e340105a157cf942ccf977f7bb3a4e5522a10cbb1fc555aaaf6675c7991b98", kill_on_drop: false }`
[INFO] [stdout] 67e340105a157cf942ccf977f7bb3a4e5522a10cbb1fc555aaaf6675c7991b98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] f2bcadc757434540bc19ad0a81ae429072ed9715d071e787fa5f78254fd87e9a
[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" "f2bcadc757434540bc19ad0a81ae429072ed9715d071e787fa5f78254fd87e9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling derive_builder v0.7.0
[INFO] [stderr]     Checking hex-slice v0.1.4
[INFO] [stderr]    Compiling mimir v0.3.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking memchr v2.1.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking time v0.1.41
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking rand v0.6.1
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking slog-try v0.2.0
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking Inflector v0.11.3
[INFO] [stderr]    Compiling getset v0.0.6
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking mustache v0.9.0
[INFO] [stderr]    Compiling darling_core v0.8.1
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling darling_macro v0.8.1
[INFO] [stderr]    Compiling darling v0.8.1
[INFO] [stderr]    Compiling derive_builder_core v0.4.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mimir-0.3.5/src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(ptr_internals, try_from, untagged_unions)]
[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 `mimir`.
[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" "f2bcadc757434540bc19ad0a81ae429072ed9715d071e787fa5f78254fd87e9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2bcadc757434540bc19ad0a81ae429072ed9715d071e787fa5f78254fd87e9a", kill_on_drop: false }`
[INFO] [stdout] f2bcadc757434540bc19ad0a81ae429072ed9715d071e787fa5f78254fd87e9a