[INFO] cloning repository https://github.com/crypto-keys-unlocked/vsss-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crypto-keys-unlocked/vsss-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrypto-keys-unlocked%2Fvsss-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrypto-keys-unlocked%2Fvsss-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98844f8a809f26a814ee3ea9c0a51fcc9b83a9c4
[INFO] checking crypto-keys-unlocked/vsss-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrypto-keys-unlocked%2Fvsss-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crypto-keys-unlocked/vsss-rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/crypto-keys-unlocked/vsss-rust
[INFO] finished tweaking git repo https://github.com/crypto-keys-unlocked/vsss-rust
[INFO] tweaked toml for git repo https://github.com/crypto-keys-unlocked/vsss-rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/crypto-keys-unlocked/vsss-rust 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-modular v0.5.1
[INFO] [stderr]   Downloaded num-prime v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a402143085d96de13862525152017196e05eb650018985f3c9e8b4e3ec05d3b3
[INFO] running `Command { std: "docker" "start" "-a" "a402143085d96de13862525152017196e05eb650018985f3c9e8b4e3ec05d3b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a402143085d96de13862525152017196e05eb650018985f3c9e8b4e3ec05d3b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a402143085d96de13862525152017196e05eb650018985f3c9e8b4e3ec05d3b3", kill_on_drop: false }`
[INFO] [stdout] a402143085d96de13862525152017196e05eb650018985f3c9e8b4e3ec05d3b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 398af9fc19e7d0397f067aed0db3ea93d524d80892653010ddb489d8046ad9b8
[INFO] running `Command { std: "docker" "start" "-a" "398af9fc19e7d0397f067aed0db3ea93d524d80892653010ddb489d8046ad9b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking ahash v0.7.8
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking plotters-backend v0.3.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking opaque-debug v0.3.1
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking plotters-svg v0.3.5
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rayon v1.9.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]     Checking lru v0.7.8
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking plotters v0.3.5
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]     Checking num-modular v0.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking num-prime v0.4.3
[INFO] [stderr]     Checking serde_json v1.0.114
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking vsss-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stdout] warning: the item `ToBigUint` is imported redundantly
[INFO] [stdout]   --> src/shamirs_secret_sharing/mod.rs:78:9
[INFO] [stdout]    |
[INFO] [stdout] 77 |     use super::*;
[INFO] [stdout]    |         -------- the item `ToBigUint` is already imported here
[INFO] [stdout] 78 |     use num_bigint::ToBigUint;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToBigUint` is imported redundantly
[INFO] [stdout]    --> src/feldman_verifiability/mod.rs:160:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |     use super::*;
[INFO] [stdout]     |         -------- the item `ToBigUint` is already imported here
[INFO] [stdout] 160 |     use num_bigint::ToBigUint;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.38s
[INFO] running `Command { std: "docker" "inspect" "398af9fc19e7d0397f067aed0db3ea93d524d80892653010ddb489d8046ad9b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "398af9fc19e7d0397f067aed0db3ea93d524d80892653010ddb489d8046ad9b8", kill_on_drop: false }`
[INFO] [stdout] 398af9fc19e7d0397f067aed0db3ea93d524d80892653010ddb489d8046ad9b8