[INFO] updating cached repository kgeronim/minigrep
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kgeronim/minigrep
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kgeronim/minigrep" "work/ex/beta-1.38-1/sources/1.37.0/gh/kgeronim/minigrep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kgeronim/minigrep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kgeronim/minigrep" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kgeronim/minigrep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kgeronim/minigrep'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e7e220a472069241bbf5eb9d4314d70a163f232b
[INFO] sha for GitHub repo kgeronim/minigrep: e7e220a472069241bbf5eb9d4314d70a163f232b
[INFO] validating manifest of kgeronim/minigrep 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 kgeronim/minigrep 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 kgeronim/minigrep
[INFO] finished frobbing kgeronim/minigrep
[INFO] frobbed toml for kgeronim/minigrep written to work/ex/beta-1.38-1/sources/1.37.0/gh/kgeronim/minigrep/Cargo.toml
[INFO] started frobbing kgeronim/minigrep
[INFO] finished frobbing kgeronim/minigrep
[INFO] frobbed toml for kgeronim/minigrep written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kgeronim/minigrep/Cargo.toml
[INFO] crate kgeronim/minigrep 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing kgeronim/minigrep against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kgeronim/minigrep:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] a04c81847aeb7152362b8784729312bfd9d538d23477091504f231ba13d011f6
[INFO] running `"docker" "start" "-a" "a04c81847aeb7152362b8784729312bfd9d538d23477091504f231ba13d011f6"`
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::prelude`
[INFO] [stderr]  --> src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "a04c81847aeb7152362b8784729312bfd9d538d23477091504f231ba13d011f6"`
[INFO] running `"docker" "rm" "-f" "a04c81847aeb7152362b8784729312bfd9d538d23477091504f231ba13d011f6"`
[INFO] [stdout] a04c81847aeb7152362b8784729312bfd9d538d23477091504f231ba13d011f6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kgeronim/minigrep:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 79abc98e3fbc8513d139ea0a69daf66b0b558c5d514cc58a81234ba9f63055ec
[INFO] running `"docker" "start" "-a" "79abc98e3fbc8513d139ea0a69daf66b0b558c5d514cc58a81234ba9f63055ec"`
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::prelude`
[INFO] [stderr]  --> src/lib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
[INFO] running `"docker" "inspect" "79abc98e3fbc8513d139ea0a69daf66b0b558c5d514cc58a81234ba9f63055ec"`
[INFO] running `"docker" "rm" "-f" "79abc98e3fbc8513d139ea0a69daf66b0b558c5d514cc58a81234ba9f63055ec"`
[INFO] [stdout] 79abc98e3fbc8513d139ea0a69daf66b0b558c5d514cc58a81234ba9f63055ec
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kgeronim/minigrep:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] b49c820cfa56992ed5efec1133aac72cd8a154ffe74ec76ade290b0d4db6ff41
[INFO] running `"docker" "start" "-a" "b49c820cfa56992ed5efec1133aac72cd8a154ffe74ec76ade290b0d4db6ff41"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minigrep-71f1d2ea303b99d3
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test::case_insensitive ... ok
[INFO] [stdout] test test::case_sensitive ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minigrep-ff2cfaeab7bc6a0d
[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] [stderr]    Doc-tests minigrep
[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" "b49c820cfa56992ed5efec1133aac72cd8a154ffe74ec76ade290b0d4db6ff41"`
[INFO] running `"docker" "rm" "-f" "b49c820cfa56992ed5efec1133aac72cd8a154ffe74ec76ade290b0d4db6ff41"`
[INFO] [stdout] b49c820cfa56992ed5efec1133aac72cd8a154ffe74ec76ade290b0d4db6ff41