[INFO] updating cached repository https://github.com/maciejhirsz/tiny-qr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75974f865214301130b57b57d1ba36a51bb94ebf
[INFO] documenting maciejhirsz/tiny-qr against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaciejhirsz%2Ftiny-qr" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maciejhirsz/tiny-qr on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maciejhirsz/tiny-qr
[INFO] finished tweaking git repo https://github.com/maciejhirsz/tiny-qr
[INFO] tweaked toml for git repo https://github.com/maciejhirsz/tiny-qr written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/maciejhirsz/tiny-qr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d5882e5c12d35bb11d9c73fca3ca65e7b2e77a8d6ab6f8287ab8616db85bb8e
[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" "2d5882e5c12d35bb11d9c73fca3ca65e7b2e77a8d6ab6f8287ab8616db85bb8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d5882e5c12d35bb11d9c73fca3ca65e7b2e77a8d6ab6f8287ab8616db85bb8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d5882e5c12d35bb11d9c73fca3ca65e7b2e77a8d6ab6f8287ab8616db85bb8e", kill_on_drop: false }`
[INFO] [stdout] 2d5882e5c12d35bb11d9c73fca3ca65e7b2e77a8d6ab6f8287ab8616db85bb8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 289910445de37ebad62f3a1093ab0460ac97fed269f01ef8b3010f33a93cf80d
[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" "289910445de37ebad62f3a1093ab0460ac97fed269f01ef8b3010f33a93cf80d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.48
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling bumpalo v2.5.0
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling wee_alloc v0.4.4
[INFO] [stderr]    Compiling wasm-bindgen v0.2.48
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]     Checking qrcodegen v1.5.0
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking pixelate v0.1.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.48
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.48
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.48
[INFO] [stderr]  Documenting tiny-qr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.45s
[INFO] running `Command { std: "docker" "inspect" "289910445de37ebad62f3a1093ab0460ac97fed269f01ef8b3010f33a93cf80d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "289910445de37ebad62f3a1093ab0460ac97fed269f01ef8b3010f33a93cf80d", kill_on_drop: false }`
[INFO] [stdout] 289910445de37ebad62f3a1093ab0460ac97fed269f01ef8b3010f33a93cf80d