[INFO] fetching crate md5mix 0.1.2...
[INFO] documenting md5mix-0.1.2 against 1.75.0 for beta-1.76-rustdoc-2
[INFO] extracting crate md5mix 0.1.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate md5mix 0.1.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate md5mix 0.1.2
[INFO] finished tweaking crates.io crate md5mix 0.1.2
[INFO] tweaked toml for crates.io crate md5mix 0.1.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate md5mix 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasi v0.10.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded time v0.1.44
[INFO] [stderr]   Downloaded rdrand v0.4.0
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded rand_core v0.3.1
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded gcc v0.3.55
[INFO] [stderr]   Downloaded base64 v0.13.1
[INFO] [stderr]   Downloaded rand v0.4.6
[INFO] [stderr]   Downloaded libc v0.2.136
[INFO] [stderr]   Downloaded rust-crypto v0.2.36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41bb6d4e4bd49e2704db98655689c8740249dbb9106ddfb8d3106c3a2f6204f1
[INFO] running `Command { std: "docker" "start" "-a" "41bb6d4e4bd49e2704db98655689c8740249dbb9106ddfb8d3106c3a2f6204f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41bb6d4e4bd49e2704db98655689c8740249dbb9106ddfb8d3106c3a2f6204f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41bb6d4e4bd49e2704db98655689c8740249dbb9106ddfb8d3106c3a2f6204f1", kill_on_drop: false }`
[INFO] [stdout] 41bb6d4e4bd49e2704db98655689c8740249dbb9106ddfb8d3106c3a2f6204f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0054544ec7ae3cd22a09a498e91d97f1130ffc8064d9a4f01dda226afed5b789
[INFO] running `Command { std: "docker" "start" "-a" "0054544ec7ae3cd22a09a498e91d97f1130ffc8064d9a4f01dda226afed5b789", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.136
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]  Documenting md5mix v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.43s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/md5mix/index.html
[INFO] running `Command { std: "docker" "inspect" "0054544ec7ae3cd22a09a498e91d97f1130ffc8064d9a4f01dda226afed5b789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0054544ec7ae3cd22a09a498e91d97f1130ffc8064d9a4f01dda226afed5b789", kill_on_drop: false }`
[INFO] [stdout] 0054544ec7ae3cd22a09a498e91d97f1130ffc8064d9a4f01dda226afed5b789
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 455ca5ee797e3fee2a594d28743436ed60e56c0f03b494298e2dcbe2bc8cc18b
[INFO] running `Command { std: "docker" "start" "-a" "455ca5ee797e3fee2a594d28743436ed60e56c0f03b494298e2dcbe2bc8cc18b", kill_on_drop: false }`
[INFO] [stderr]  Documenting md5mix v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/md5mix/index.html
[INFO] running `Command { std: "docker" "inspect" "455ca5ee797e3fee2a594d28743436ed60e56c0f03b494298e2dcbe2bc8cc18b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455ca5ee797e3fee2a594d28743436ed60e56c0f03b494298e2dcbe2bc8cc18b", kill_on_drop: false }`
[INFO] [stdout] 455ca5ee797e3fee2a594d28743436ed60e56c0f03b494298e2dcbe2bc8cc18b