[INFO] fetching crate rust-hashcash 0.3.2...
[INFO] documenting rust-hashcash-0.3.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate rust-hashcash 0.3.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate rust-hashcash 0.3.2 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 crates.io crate rust-hashcash 0.3.2
[INFO] finished tweaking crates.io crate rust-hashcash 0.3.2
[INFO] tweaked toml for crates.io crate rust-hashcash 0.3.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate rust-hashcash 0.3.2 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] 053fb46cb11b0dca99d8d2396440b92a69a3e96faa64d90b1b0a452083a2b2a8
[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" "053fb46cb11b0dca99d8d2396440b92a69a3e96faa64d90b1b0a452083a2b2a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "053fb46cb11b0dca99d8d2396440b92a69a3e96faa64d90b1b0a452083a2b2a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "053fb46cb11b0dca99d8d2396440b92a69a3e96faa64d90b1b0a452083a2b2a8", kill_on_drop: false }`
[INFO] [stdout] 053fb46cb11b0dca99d8d2396440b92a69a3e96faa64d90b1b0a452083a2b2a8
[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] fa97777597cb5761568e276caaffbecd291cd45d2417e7ca94f4af014a711a0e
[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" "fa97777597cb5761568e276caaffbecd291cd45d2417e7ca94f4af014a711a0e", kill_on_drop: false }`
[INFO] [stderr]     Checking ppv-lite86 v0.2.7
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rust-hashcash v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rust-hashcash v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::check`
[INFO] [stdout]    --> src/lib.rs:375:9
[INFO] [stdout]     |
[INFO] [stdout] 375 |     use crate::check;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::Stamp`
[INFO] [stdout]    --> src/lib.rs:376:9
[INFO] [stdout]     |
[INFO] [stdout] 376 |     use crate::Stamp;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::to_iso_32bit_safe`
[INFO] [stdout]    --> src/lib.rs:377:9
[INFO] [stdout]     |
[INFO] [stdout] 377 |     use crate::to_iso_32bit_safe;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `day_of_week` is never read
[INFO] [stdout]   --> src/lib.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |             day_of_week %= 7;
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.96s
[INFO] running `Command { std: "docker" "inspect" "fa97777597cb5761568e276caaffbecd291cd45d2417e7ca94f4af014a711a0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa97777597cb5761568e276caaffbecd291cd45d2417e7ca94f4af014a711a0e", kill_on_drop: false }`
[INFO] [stdout] fa97777597cb5761568e276caaffbecd291cd45d2417e7ca94f4af014a711a0e