[INFO] updating cached repository apolitical/csv2json
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/apolitical/csv2json
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/apolitical/csv2json" "work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/apolitical/csv2json"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/apolitical/csv2json'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/apolitical/csv2json" "work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/apolitical/csv2json"`
[INFO] [stderr] Cloning into 'work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/apolitical/csv2json'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 24553735039bae859d86524c5e84e84c4d3ba508
[INFO] sha for GitHub repo apolitical/csv2json: 24553735039bae859d86524c5e84e84c4d3ba508
[INFO] validating manifest of apolitical/csv2json on toolchain master#1891bfa80364eead426517c68de6947b7692e2de
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of apolitical/csv2json on toolchain try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing apolitical/csv2json
[INFO] finished frobbing apolitical/csv2json
[INFO] frobbed toml for apolitical/csv2json written to work/ex/pr-60261/sources/master#1891bfa80364eead426517c68de6947b7692e2de/gh/apolitical/csv2json/Cargo.toml
[INFO] started frobbing apolitical/csv2json
[INFO] finished frobbing apolitical/csv2json
[INFO] frobbed toml for apolitical/csv2json written to work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/apolitical/csv2json/Cargo.toml
[INFO] crate apolitical/csv2json already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1891bfa80364eead426517c68de6947b7692e2de-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking apolitical/csv2json against try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a for pr-60261
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60261/worker-0/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60261/sources/try#bfdcf6db3afcce5fe4013023cfa8ba359c5d527a/gh/apolitical/csv2json:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+bfdcf6db3afcce5fe4013023cfa8ba359c5d527a-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6cac2b1dac433339627ad4ef161e82ce03a2459b8a8b97d6320ce9b287aebd22
[INFO] running `"docker" "start" "-a" "6cac2b1dac433339627ad4ef161e82ce03a2459b8a8b97d6320ce9b287aebd22"`
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking csv-core v0.1.4
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking csv v1.0.5
[INFO] [stderr]     Checking csv2json v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/data/mod.rs:32:38
[INFO] [stderr]    |
[INFO] [stderr] 32 |             if let JsonValue::Object(mut o2) = v2 {
[INFO] [stderr]    |                                      ----^^
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/data/mod.rs:32:38
[INFO] [stderr]    |
[INFO] [stderr] 32 |             if let JsonValue::Object(mut o2) = v2 {
[INFO] [stderr]    |                                      ----^^
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.32s
[INFO] running `"docker" "inspect" "6cac2b1dac433339627ad4ef161e82ce03a2459b8a8b97d6320ce9b287aebd22"`
[INFO] running `"docker" "rm" "-f" "6cac2b1dac433339627ad4ef161e82ce03a2459b8a8b97d6320ce9b287aebd22"`
[INFO] [stdout] 6cac2b1dac433339627ad4ef161e82ce03a2459b8a8b97d6320ce9b287aebd22