[INFO] updating cached repository https://github.com/rphmeier/shamir_sharing
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5714c399123ef015c225df1a978b36326addc937
[INFO] checking rphmeier/shamir_sharing against try#b19afc12c4f781e95f168f2fdea339c972f14ae2 for pr-64327
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frphmeier%2Fshamir_sharing" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rphmeier/shamir_sharing on toolchain b19afc12c4f781e95f168f2fdea339c972f14ae2-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rphmeier/shamir_sharing
[INFO] finished tweaking git repo https://github.com/rphmeier/shamir_sharing
[INFO] tweaked toml for git repo https://github.com/rphmeier/shamir_sharing written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/rphmeier/shamir_sharing already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--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" "/opt/rustwide/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d20a7a16fcf795befa90191c0c69162606129e4ea3fd50656a647d7c721604ac
[INFO] running `"docker" "start" "-a" "d20a7a16fcf795befa90191c0c69162606129e4ea3fd50656a647d7c721604ac"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking shamir-sharing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/field.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / /// This module exports two items: a large prime number `PRIME` and the `Value` type, which are members of
[INFO] [stderr] 8  | | /// the finite field Z / PRIME*Z
[INFO] [stderr]    | |________________________________^
[INFO] [stderr] ...
[INFO] [stderr] 12 | / thread_local! {
[INFO] [stderr] 13 | |     pub static PRIME: BigInt = {
[INFO] [stderr] 14 | |         let mut x = BigInt::one() << 256;
[INFO] [stderr] 15 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 25 | |     };
[INFO] [stderr] 26 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/field.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / /// This module exports two items: a large prime number `PRIME` and the `Value` type, which are members of
[INFO] [stderr] 8  | | /// the finite field Z / PRIME*Z
[INFO] [stderr]    | |________________________________^
[INFO] [stderr] ...
[INFO] [stderr] 12 | / thread_local! {
[INFO] [stderr] 13 | |     pub static PRIME: BigInt = {
[INFO] [stderr] 14 | |         let mut x = BigInt::one() << 256;
[INFO] [stderr] 15 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 25 | |     };
[INFO] [stderr] 26 | | }
[INFO] [stderr]    | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.58s
[INFO] running `"docker" "inspect" "d20a7a16fcf795befa90191c0c69162606129e4ea3fd50656a647d7c721604ac"`
[INFO] running `"docker" "rm" "-f" "d20a7a16fcf795befa90191c0c69162606129e4ea3fd50656a647d7c721604ac"`
[INFO] [stdout] d20a7a16fcf795befa90191c0c69162606129e4ea3fd50656a647d7c721604ac