[INFO] fetching crate sigma_db 0.0.3...
[INFO] checking sigma_db-0.0.3 against master#bbe853615821442ef11d6cd42a30a73432b38d89 for pr-154205
[INFO] extracting crate sigma_db 0.0.3 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate sigma_db 0.0.3
[INFO] finished tweaking crates.io crate sigma_db 0.0.3
[INFO] tweaked toml for crates.io crate sigma_db 0.0.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sigma_db 0.0.3 on toolchain bbe853615821442ef11d6cd42a30a73432b38d89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sigma_db 0.0.3 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" "+bbe853615821442ef11d6cd42a30a73432b38d89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c676ae2659a7f0a222146ec83d7bfde2399569200a6f510704ab80ad50cdc223
[INFO] running `Command { std: "docker" "start" "-a" "c676ae2659a7f0a222146ec83d7bfde2399569200a6f510704ab80ad50cdc223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c676ae2659a7f0a222146ec83d7bfde2399569200a6f510704ab80ad50cdc223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c676ae2659a7f0a222146ec83d7bfde2399569200a6f510704ab80ad50cdc223", kill_on_drop: false }`
[INFO] [stdout] c676ae2659a7f0a222146ec83d7bfde2399569200a6f510704ab80ad50cdc223
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c741dc0def464af1a21824f5499c805c150c42d9a690fdabfa75aa7c90f17da
[INFO] running `Command { std: "docker" "start" "-a" "0c741dc0def464af1a21824f5499c805c150c42d9a690fdabfa75aa7c90f17da", kill_on_drop: false }`
[INFO] [stderr]     Checking sigma_db v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `any::Any` and `mem`
[INFO] [stdout]  --> src/db.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::{any::Any, fmt::Debug, mem};
[INFO] [stdout]   |               ^^^^^^^^              ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/db.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use std::io::{self, BufWriter, Write};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `data_block` should have an upper camel case name
[INFO] [stdout]  --> src/db.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub struct data_block {
[INFO] [stdout]   |                ^^^^^^^^^^ help: convert the identifier to upper camel case: `DataBlock`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `db` should have an upper camel case name
[INFO] [stdout]   --> src/db.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub struct db {
[INFO] [stdout]    |                ^^ help: convert the identifier to upper camel case: `Db`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `any::Any` and `mem`
[INFO] [stdout]  --> src/db.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use std::{any::Any, fmt::Debug, mem};
[INFO] [stdout]   |               ^^^^^^^^              ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/db.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 |     use std::io::{self, BufWriter, Write};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `data_block` should have an upper camel case name
[INFO] [stdout]  --> src/db.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub struct data_block {
[INFO] [stdout]   |                ^^^^^^^^^^ help: convert the identifier to upper camel case: `DataBlock`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `db` should have an upper camel case name
[INFO] [stdout]   --> src/db.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub struct db {
[INFO] [stdout]    |                ^^ help: convert the identifier to upper camel case: `Db`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/db.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |             let mut file = File::create(path).expect("invalid file path");
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/db.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 |             let mut file = File::create(path).expect("invalid file path");
[INFO] [stdout]    |                 ----^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "0c741dc0def464af1a21824f5499c805c150c42d9a690fdabfa75aa7c90f17da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c741dc0def464af1a21824f5499c805c150c42d9a690fdabfa75aa7c90f17da", kill_on_drop: false }`
[INFO] [stdout] 0c741dc0def464af1a21824f5499c805c150c42d9a690fdabfa75aa7c90f17da