[INFO] updating cached repository https://github.com/tungbt94/grrs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f1fdf827ebd7b12f68949925c05187bf5ab60c8b
[INFO] testing tungbt94/grrs against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftungbt94%2Fgrrs" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tungbt94/grrs on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tungbt94/grrs
[INFO] finished tweaking git repo https://github.com/tungbt94/grrs
[INFO] tweaked toml for git repo https://github.com/tungbt94/grrs written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tungbt94/grrs already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 6d8aea6eb8ca5b22aeb288697c069800d196dd485655a1774b1cb2c4429570d5
[INFO] running `"docker" "start" "-a" "6d8aea6eb8ca5b22aeb288697c069800d196dd485655a1774b1cb2c4429570d5"`
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]    Compiling normalize-line-endings v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.7
[INFO] [stderr]    Compiling backtrace v0.3.20
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling termios v0.3.1
[INFO] [stderr]    Compiling clicolors-control v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.91
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling parking_lot_core v0.5.0
[INFO] [stderr]    Compiling tempfile v3.0.8
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling parking_lot v0.8.0
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling exitfailure v0.5.1
[INFO] [stderr]    Compiling console v0.7.5
[INFO] [stderr]    Compiling float-cmp v0.4.0
[INFO] [stderr]    Compiling number_prefix v0.2.8
[INFO] [stderr]    Compiling predicates v1.0.1
[INFO] [stderr]    Compiling indicatif v0.11.0
[INFO] [stderr]    Compiling structopt v0.2.15
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling assert_cmd v0.10.2
[INFO] [stderr]    Compiling grrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/lib.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{self, Write};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/lib.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{self, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lib.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             writeln!(writer, "{}", line);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/main.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let args = Cli {
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.08s
[INFO] running `"docker" "inspect" "6d8aea6eb8ca5b22aeb288697c069800d196dd485655a1774b1cb2c4429570d5"`
[INFO] running `"docker" "rm" "-f" "6d8aea6eb8ca5b22aeb288697c069800d196dd485655a1774b1cb2c4429570d5"`
[INFO] [stdout] 6d8aea6eb8ca5b22aeb288697c069800d196dd485655a1774b1cb2c4429570d5
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 39fe5e309109ebda7253239c5002c7c80154914a987f0ae9029626680d5b6a27
[INFO] running `"docker" "start" "-a" "39fe5e309109ebda7253239c5002c7c80154914a987f0ae9029626680d5b6a27"`
[INFO] [stderr]    Compiling grrs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/lib.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{self, Write};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/lib.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{self, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lib.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             writeln!(writer, "{}", line);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/main.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let args = Cli {
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/cli.rs:8:42
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn file_doesnt_exist() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/cli.rs:19:45
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn find_content_in_file() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.34s
[INFO] running `"docker" "inspect" "39fe5e309109ebda7253239c5002c7c80154914a987f0ae9029626680d5b6a27"`
[INFO] running `"docker" "rm" "-f" "39fe5e309109ebda7253239c5002c7c80154914a987f0ae9029626680d5b6a27"`
[INFO] [stdout] 39fe5e309109ebda7253239c5002c7c80154914a987f0ae9029626680d5b6a27
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 2145e9e31ae04f39b18cec06c3b2128452047cf183d07b40c36fe4034efe1f62
[INFO] running `"docker" "start" "-a" "2145e9e31ae04f39b18cec06c3b2128452047cf183d07b40c36fe4034efe1f62"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/grrs-ad9d8fdc460a2d7f
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/grrs-1d5b54165f94c408
[INFO] [stdout] test find_a_match ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cli-2dc37a2cd955ea51
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test find_content_in_file ... ok
[INFO] [stdout] test file_doesnt_exist ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests grrs
[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" "2145e9e31ae04f39b18cec06c3b2128452047cf183d07b40c36fe4034efe1f62"`
[INFO] running `"docker" "rm" "-f" "2145e9e31ae04f39b18cec06c3b2128452047cf183d07b40c36fe4034efe1f62"`
[INFO] [stdout] 2145e9e31ae04f39b18cec06c3b2128452047cf183d07b40c36fe4034efe1f62