[INFO] cloning repository https://github.com/AmirMahdiAmini/vblockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AmirMahdiAmini/vblockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmirMahdiAmini%2Fvblockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmirMahdiAmini%2Fvblockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6038f8d4f8230e38032b1e4f8f5d11da90e57e79
[INFO] checking AmirMahdiAmini/vblockchain against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAmirMahdiAmini%2Fvblockchain" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AmirMahdiAmini/vblockchain 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 git repo https://github.com/AmirMahdiAmini/vblockchain
[INFO] finished tweaking git repo https://github.com/AmirMahdiAmini/vblockchain
[INFO] tweaked toml for git repo https://github.com/AmirMahdiAmini/vblockchain written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AmirMahdiAmini/vblockchain 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8d29a5b267e51e2f17907b78357e42cdf5c004d0e3b2b4f7f9785c3a79045b9e
[INFO] running `Command { std: "docker" "start" "-a" "8d29a5b267e51e2f17907b78357e42cdf5c004d0e3b2b4f7f9785c3a79045b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d29a5b267e51e2f17907b78357e42cdf5c004d0e3b2b4f7f9785c3a79045b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d29a5b267e51e2f17907b78357e42cdf5c004d0e3b2b4f7f9785c3a79045b9e", kill_on_drop: false }`
[INFO] [stdout] 8d29a5b267e51e2f17907b78357e42cdf5c004d0e3b2b4f7f9785c3a79045b9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 62a2ab61dc3654c38b0ae7b795e9331266455cd46fa9adbcf0276e21c3cb4a95
[INFO] running `Command { std: "docker" "start" "-a" "62a2ab61dc3654c38b0ae7b795e9331266455cd46fa9adbcf0276e21c3cb4a95", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking vblockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Transaction` is imported redundantly
[INFO] [stdout]  --> src/block.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::transaction::Transaction;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `Transaction` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chrono::{self, Timelike};
[INFO] [stdout]   |              ^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Transaction` is imported redundantly
[INFO] [stdout]  --> src/block.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::transaction::Transaction;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 2 | use super::*;
[INFO] [stdout]   |     -------- the item `Transaction` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | use chrono::{self, Timelike};
[INFO] [stdout]   |              ^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.73s
[INFO] running `Command { std: "docker" "inspect" "62a2ab61dc3654c38b0ae7b795e9331266455cd46fa9adbcf0276e21c3cb4a95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62a2ab61dc3654c38b0ae7b795e9331266455cd46fa9adbcf0276e21c3cb4a95", kill_on_drop: false }`
[INFO] [stdout] 62a2ab61dc3654c38b0ae7b795e9331266455cd46fa9adbcf0276e21c3cb4a95