[INFO] updating cached repository jbcden/csv_parser
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jbcden/csv_parser
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jbcden/csv_parser" "work/ex/beta-1.38-1/sources/1.37.0/gh/jbcden/csv_parser"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jbcden/csv_parser'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jbcden/csv_parser" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jbcden/csv_parser"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jbcden/csv_parser'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] adf6db0432840c3db1ea326ab57f07e571fee404
[INFO] sha for GitHub repo jbcden/csv_parser: adf6db0432840c3db1ea326ab57f07e571fee404
[INFO] validating manifest of jbcden/csv_parser on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jbcden/csv_parser on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jbcden/csv_parser
[INFO] finished frobbing jbcden/csv_parser
[INFO] frobbed toml for jbcden/csv_parser written to work/ex/beta-1.38-1/sources/1.37.0/gh/jbcden/csv_parser/Cargo.toml
[INFO] started frobbing jbcden/csv_parser
[INFO] finished frobbing jbcden/csv_parser
[INFO] frobbed toml for jbcden/csv_parser written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jbcden/csv_parser/Cargo.toml
[INFO] crate jbcden/csv_parser already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jbcden/csv_parser against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jbcden/csv_parser:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e45a40f3ebd16390674616ed2baa8f085f378bb5f3e4dadcef61e0edb9cc36d0
[INFO] running `"docker" "start" "-a" "e45a40f3ebd16390674616ed2baa8f085f378bb5f3e4dadcef61e0edb9cc36d0"`
[INFO] [stderr]    Compiling csv_parser v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut csv = std::fs::File::open("../FINAL.csv").unwrap();
[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/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut buf_read = BufReader::new(&csv);
[INFO] [stderr]   |         ----^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `efficient_unsafe`
[INFO] [stderr]   --> src/main.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn efficient_unsafe(line: Result<String, String>) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "e45a40f3ebd16390674616ed2baa8f085f378bb5f3e4dadcef61e0edb9cc36d0"`
[INFO] running `"docker" "rm" "-f" "e45a40f3ebd16390674616ed2baa8f085f378bb5f3e4dadcef61e0edb9cc36d0"`
[INFO] [stdout] e45a40f3ebd16390674616ed2baa8f085f378bb5f3e4dadcef61e0edb9cc36d0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jbcden/csv_parser:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7a8c159838f48850689e95b5671ccd1a1b893c987e677b4b9b140b8727770ed9
[INFO] running `"docker" "start" "-a" "7a8c159838f48850689e95b5671ccd1a1b893c987e677b4b9b140b8727770ed9"`
[INFO] [stderr]    Compiling csv_parser v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut csv = std::fs::File::open("../FINAL.csv").unwrap();
[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/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut buf_read = BufReader::new(&csv);
[INFO] [stderr]   |         ----^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `efficient_unsafe`
[INFO] [stderr]   --> src/main.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn efficient_unsafe(line: Result<String, String>) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "7a8c159838f48850689e95b5671ccd1a1b893c987e677b4b9b140b8727770ed9"`
[INFO] running `"docker" "rm" "-f" "7a8c159838f48850689e95b5671ccd1a1b893c987e677b4b9b140b8727770ed9"`
[INFO] [stdout] 7a8c159838f48850689e95b5671ccd1a1b893c987e677b4b9b140b8727770ed9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jbcden/csv_parser:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 753f65a17ef4fa48c9df2145360c76269d99e5cfa279a1a1fe3a9dfdc314e209
[INFO] running `"docker" "start" "-a" "753f65a17ef4fa48c9df2145360c76269d99e5cfa279a1a1fe3a9dfdc314e209"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/csv_parser-87bb46e7fa9dd3cd
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "753f65a17ef4fa48c9df2145360c76269d99e5cfa279a1a1fe3a9dfdc314e209"`
[INFO] running `"docker" "rm" "-f" "753f65a17ef4fa48c9df2145360c76269d99e5cfa279a1a1fe3a9dfdc314e209"`
[INFO] [stdout] 753f65a17ef4fa48c9df2145360c76269d99e5cfa279a1a1fe3a9dfdc314e209