[INFO] fetching crate sigma_db 0.0.3...
[INFO] checking sigma_db-0.0.3 against try#1463461488056994d1b84e8b752e7c11c7fae7aa for pr-154205
[INFO] extracting crate sigma_db 0.0.3 into /workspace/builds/worker-5-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sigma_db 0.0.3 on toolchain 1463461488056994d1b84e8b752e7c11c7fae7aa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "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" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b21192eabf12b8523360c5b028a92c80b336fc0e5c8677a6c717a53c81807945
[INFO] running `Command { std: "docker" "start" "-a" "b21192eabf12b8523360c5b028a92c80b336fc0e5c8677a6c717a53c81807945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b21192eabf12b8523360c5b028a92c80b336fc0e5c8677a6c717a53c81807945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b21192eabf12b8523360c5b028a92c80b336fc0e5c8677a6c717a53c81807945", kill_on_drop: false }`
[INFO] [stdout] b21192eabf12b8523360c5b028a92c80b336fc0e5c8677a6c717a53c81807945
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+1463461488056994d1b84e8b752e7c11c7fae7aa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f34b4090ca44fce070d14063647d5f960ca1518508ecef9c7e129fb422c25cae
[INFO] running `Command { std: "docker" "start" "-a" "f34b4090ca44fce070d14063647d5f960ca1518508ecef9c7e129fb422c25cae", 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] [stderr] [FMTARGS] {"crate":"sigma_db","p":2,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[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] [stderr] [FMTARGS] {"crate":"sigma_db","p":2,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[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] [stderr] [FMTARGS] {"crate":"sigma_db","p":3,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[INFO] [stderr] [FMTARGS] {"crate":"sigma_db","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"sigma_db","p":2,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[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] [stderr] [FMTARGS] {"crate":"sigma_db","p":2,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[INFO] [stderr] [FMTARGS] {"crate":"sigma_db","p":2,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[INFO] [stderr] [FMTARGS] {"crate":"sigma_db","p":3,"ph":2,"wa":0,"pa":0,"a":2,"pos":2,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":2,"a_opt":2,"sz_no_dedup":32,"sz_old":32,"sz_opt":32}
[INFO] [stderr] [FMTARGS] {"crate":"sigma_db","p":1,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0}
[INFO] [stderr] [FMTARGS] {"crate":"sigma_db","p":2,"ph":1,"wa":0,"pa":0,"a":1,"pos":1,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":1,"a_opt":1,"sz_no_dedup":16,"sz_old":16,"sz_opt":16}
[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" "f34b4090ca44fce070d14063647d5f960ca1518508ecef9c7e129fb422c25cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f34b4090ca44fce070d14063647d5f960ca1518508ecef9c7e129fb422c25cae", kill_on_drop: false }`
[INFO] [stdout] f34b4090ca44fce070d14063647d5f960ca1518508ecef9c7e129fb422c25cae