[INFO] fetching crate amcl_wrapper_ml 0.5.1...
[INFO] checking amcl_wrapper_ml-0.5.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate amcl_wrapper_ml 0.5.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate amcl_wrapper_ml 0.5.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate amcl_wrapper_ml 0.5.1
[INFO] finished tweaking crates.io crate amcl_wrapper_ml 0.5.1
[INFO] tweaked toml for crates.io crate amcl_wrapper_ml 0.5.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 59 packages
[INFO] [stderr]       Adding block-buffer v0.7.3 (latest: v0.10.4)
[INFO] [stderr]       Adding block-padding v0.1.5 (latest: v0.3.3)
[INFO] [stderr]       Adding digest v0.8.1 (latest: v0.10.7)
[INFO] [stderr]       Adding generic-array v0.12.4 (latest: v1.0.0)
[INFO] [stderr]       Adding getrandom v0.1.16 (latest: v0.2.12)
[INFO] [stderr]       Adding hash2curve v0.0.6 (latest: v0.1.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding opaque-debug v0.2.3 (latest: v0.3.1)
[INFO] [stderr]       Adding rand v0.7.3 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.2.2 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.2.0 (latest: v0.3.2)
[INFO] [stderr]       Adding sha2 v0.8.2 (latest: v0.10.8)
[INFO] [stderr]       Adding sha3 v0.8.2 (latest: v0.10.8)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded subtle-encoding v0.5.1
[INFO] [stderr]   Downloaded amcl-milagro v3.2.6
[INFO] [stderr]   Downloaded hash2curve v0.0.6
[INFO] [stderr]   Downloaded sha3 v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c4f4dc638c6bb92ec611991afcf3127c4e335a79b6c72805553c6ad3bb81348
[INFO] running `Command { std: "docker" "start" "-a" "3c4f4dc638c6bb92ec611991afcf3127c4e335a79b6c72805553c6ad3bb81348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c4f4dc638c6bb92ec611991afcf3127c4e335a79b6c72805553c6ad3bb81348", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c4f4dc638c6bb92ec611991afcf3127c4e335a79b6c72805553c6ad3bb81348", kill_on_drop: false }`
[INFO] [stdout] 3c4f4dc638c6bb92ec611991afcf3127c4e335a79b6c72805553c6ad3bb81348
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be8bc886a65fa13a4479f5ec9af9e9cc067367ad4a7bccb260d153274956ecb4
[INFO] running `Command { std: "docker" "start" "-a" "be8bc886a65fa13a4479f5ec9af9e9cc067367ad4a7bccb260d153274956ecb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]     Checking amcl-milagro v3.2.6
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking keccak v0.1.5
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking subtle-encoding v0.5.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking backtrace v0.3.71
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking hash2curve v0.0.6
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking amcl_wrapper_ml v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `CryptoRng` is imported redundantly
[INFO] [stdout]   --> src/curve_order_elem.rs:3:12
[INFO] [stdout]    |
[INFO] [stdout] 3  | use rand::{CryptoRng, RngCore};
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | use rand::prelude::*;
[INFO] [stdout]    |     ---------------- the item `CryptoRng` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RngCore` is imported redundantly
[INFO] [stdout]   --> src/curve_order_elem.rs:3:23
[INFO] [stdout]    |
[INFO] [stdout] 3  | use rand::{CryptoRng, RngCore};
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | use rand::prelude::*;
[INFO] [stdout]    |     ---------------- the item `RngCore` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CryptoRng` is imported redundantly
[INFO] [stdout]   --> src/curve_order_elem.rs:3:12
[INFO] [stdout]    |
[INFO] [stdout] 3  | use rand::{CryptoRng, RngCore};
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | use rand::prelude::*;
[INFO] [stdout]    |     ---------------- the item `CryptoRng` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RngCore` is imported redundantly
[INFO] [stdout]   --> src/curve_order_elem.rs:3:23
[INFO] [stdout]    |
[INFO] [stdout] 3  | use rand::{CryptoRng, RngCore};
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 | use rand::prelude::*;
[INFO] [stdout]    |     ---------------- the item `RngCore` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Rng` is imported redundantly
[INFO] [stdout]     --> src/curve_order_elem.rs:1062:9
[INFO] [stdout]      |
[INFO] [stdout] 1061 |     use super::*;
[INFO] [stdout]      |         -------- the item `Rng` is already imported here
[INFO] [stdout] 1062 |     use rand::Rng;
[INFO] [stdout]      |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]     --> src/curve_order_elem.rs:1063:9
[INFO] [stdout]      |
[INFO] [stdout] 1063 |     use serde_json;
[INFO] [stdout]      |         ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.42s
[INFO] running `Command { std: "docker" "inspect" "be8bc886a65fa13a4479f5ec9af9e9cc067367ad4a7bccb260d153274956ecb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be8bc886a65fa13a4479f5ec9af9e9cc067367ad4a7bccb260d153274956ecb4", kill_on_drop: false }`
[INFO] [stdout] be8bc886a65fa13a4479f5ec9af9e9cc067367ad4a7bccb260d153274956ecb4