[INFO] cloning repository https://github.com/leshow/rust_mnemonic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leshow/rust_mnemonic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Frust_mnemonic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleshow%2Frust_mnemonic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 698ab998972f881f23b2fa9e45819e744c9869c6
[INFO] documenting leshow/rust_mnemonic 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%2Fleshow%2Frust_mnemonic" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leshow/rust_mnemonic 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/leshow/rust_mnemonic
[INFO] finished tweaking git repo https://github.com/leshow/rust_mnemonic
[INFO] tweaked toml for git repo https://github.com/leshow/rust_mnemonic written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/leshow/rust_mnemonic 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] c01440e384cae8a7e3eac747118e150dc6c738483cb0dd9f62dc2d57c74d3a8d
[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" "c01440e384cae8a7e3eac747118e150dc6c738483cb0dd9f62dc2d57c74d3a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c01440e384cae8a7e3eac747118e150dc6c738483cb0dd9f62dc2d57c74d3a8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c01440e384cae8a7e3eac747118e150dc6c738483cb0dd9f62dc2d57c74d3a8d", kill_on_drop: false }`
[INFO] [stdout] c01440e384cae8a7e3eac747118e150dc6c738483cb0dd9f62dc2d57c74d3a8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] c71d4f93d73d21af02ccf773d521f8b442f49b5d40bdf6b523485198d6f17d55
[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" "c71d4f93d73d21af02ccf773d521f8b442f49b5d40bdf6b523485198d6f17d55", kill_on_drop: false }`
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.55
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking rust_mnemonic v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rust_mnemonic v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/mnemonic.rs:133:32
[INFO] [stdout]     |
[INFO] [stdout] 133 |             Io(ref err) => err.description(),
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/mnemonic.rs:134:35
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Serde(ref err) => err.description(),
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.37s
[INFO] running `Command { std: "docker" "inspect" "c71d4f93d73d21af02ccf773d521f8b442f49b5d40bdf6b523485198d6f17d55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c71d4f93d73d21af02ccf773d521f8b442f49b5d40bdf6b523485198d6f17d55", kill_on_drop: false }`
[INFO] [stdout] c71d4f93d73d21af02ccf773d521f8b442f49b5d40bdf6b523485198d6f17d55