[INFO] cloning repository https://github.com/csschan/merkle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/csschan/merkle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsschan%2Fmerkle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsschan%2Fmerkle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bef4d0d93baf840fec58c8e9f503a1548ac8bdc9
[INFO] documenting csschan/merkle against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcsschan%2Fmerkle" "/workspace/builds/worker-16/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-16/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/csschan/merkle on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/csschan/merkle
[INFO] finished tweaking git repo https://github.com/csschan/merkle
[INFO] tweaked toml for git repo https://github.com/csschan/merkle written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate git repo https://github.com/csschan/merkle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 740667214de72aefe00901c25aaee7239dc00e4235b5c12194f68cc48f2c02b0
[INFO] running `Command { std: "docker" "start" "-a" "740667214de72aefe00901c25aaee7239dc00e4235b5c12194f68cc48f2c02b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "740667214de72aefe00901c25aaee7239dc00e4235b5c12194f68cc48f2c02b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "740667214de72aefe00901c25aaee7239dc00e4235b5c12194f68cc48f2c02b0", kill_on_drop: false }`
[INFO] [stdout] 740667214de72aefe00901c25aaee7239dc00e4235b5c12194f68cc48f2c02b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21602fceb5f7e77d5fbcf73845d5acbe5e1ff1c7d9bb77adaf7d1514e06e2c32
[INFO] running `Command { std: "docker" "start" "-a" "21602fceb5f7e77d5fbcf73845d5acbe5e1ff1c7d9bb77adaf7d1514e06e2c32", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]  Documenting merkle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Hasher`
[INFO] [stdout]    --> src/lib.rs:401:19
[INFO] [stdout]     |
[INFO] [stdout] 401 | /// The default [`Hasher`] used by [`MerkleTree`].
[INFO] [stdout]     |                   ^^^^^^ no item named `Hasher` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.80s
[INFO] running `Command { std: "docker" "inspect" "21602fceb5f7e77d5fbcf73845d5acbe5e1ff1c7d9bb77adaf7d1514e06e2c32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21602fceb5f7e77d5fbcf73845d5acbe5e1ff1c7d9bb77adaf7d1514e06e2c32", kill_on_drop: false }`
[INFO] [stdout] 21602fceb5f7e77d5fbcf73845d5acbe5e1ff1c7d9bb77adaf7d1514e06e2c32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] c84760b19ff7b4b6e80b9a86d77813ddd94fa12350d2b797c20c145c47ff7efc
[INFO] running `Command { std: "docker" "start" "-a" "c84760b19ff7b4b6e80b9a86d77813ddd94fa12350d2b797c20c145c47ff7efc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]  Documenting merkle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `Hasher`
[INFO] [stdout]    --> src/lib.rs:401:19
[INFO] [stdout]     |
[INFO] [stdout] 401 | /// The default [`Hasher`] used by [`MerkleTree`].
[INFO] [stdout]     |                   ^^^^^^ no item named `Hasher` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]     = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.31s
[INFO] running `Command { std: "docker" "inspect" "c84760b19ff7b4b6e80b9a86d77813ddd94fa12350d2b797c20c145c47ff7efc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c84760b19ff7b4b6e80b9a86d77813ddd94fa12350d2b797c20c145c47ff7efc", kill_on_drop: false }`
[INFO] [stdout] c84760b19ff7b4b6e80b9a86d77813ddd94fa12350d2b797c20c145c47ff7efc