[INFO] cloning repository https://github.com/AlexJuca/grepru
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlexJuca/grepru" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexJuca%2Fgrepru", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexJuca%2Fgrepru'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2502e964e5768fa9614f222665df5a5ab517f988
[INFO] checking AlexJuca/grepru against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlexJuca%2Fgrepru" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AlexJuca/grepru
[INFO] finished tweaking git repo https://github.com/AlexJuca/grepru
[INFO] tweaked toml for git repo https://github.com/AlexJuca/grepru written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AlexJuca/grepru on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AlexJuca/grepru 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt-derive v0.4.10
[INFO] [stderr]   Downloaded hermit-abi v0.1.15
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.9
[INFO] [stderr]   Downloaded normalize-line-endings v0.3.0
[INFO] [stderr]   Downloaded memchr v2.3.3
[INFO] [stderr]   Downloaded escargot v0.3.1
[INFO] [stderr]   Downloaded yansi v0.5.0
[INFO] [stderr]   Downloaded predicates v1.0.5
[INFO] [stderr]   Downloaded serde_derive v1.0.115
[INFO] [stderr]   Downloaded serde v1.0.115
[INFO] [stderr]   Downloaded syn v1.0.39
[INFO] [stderr]   Downloaded proc-macro2 v1.0.19
[INFO] [stderr]   Downloaded libc v0.2.76
[INFO] [stderr]   Downloaded serde_json v1.0.57
[INFO] [stderr]   Downloaded assert_cmd v0.10.2
[INFO] [stderr]   Downloaded aho-corasick v0.7.13
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded structopt v0.3.17
[INFO] [stderr]   Downloaded float-cmp v0.8.0
[INFO] [stderr]   Downloaded thread_local v1.0.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.18
[INFO] [stderr]   Downloaded remove_dir_all v0.5.3
[INFO] [stderr]   Downloaded tempfile v3.1.0
[INFO] [stderr]   Downloaded regex v1.3.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59d506c617c8a926bf4be5f0328cee8c8762523eb8935bc3430baa13c33a8c38
[INFO] running `Command { std: "docker" "start" "-a" "59d506c617c8a926bf4be5f0328cee8c8762523eb8935bc3430baa13c33a8c38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59d506c617c8a926bf4be5f0328cee8c8762523eb8935bc3430baa13c33a8c38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59d506c617c8a926bf4be5f0328cee8c8762523eb8935bc3430baa13c33a8c38", kill_on_drop: false }`
[INFO] [stdout] 59d506c617c8a926bf4be5f0328cee8c8762523eb8935bc3430baa13c33a8c38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78411950f5e89878f8182e80fa758c91dc5aa727f6e619fc8617658f8f893ad3
[INFO] running `Command { std: "docker" "start" "-a" "78411950f5e89878f8182e80fa758c91dc5aa727f6e619fc8617658f8f893ad3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling escargot v0.3.1
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking yansi v0.5.0
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.10
[INFO] [stderr]     Checking structopt v0.3.17
[INFO] [stderr]     Checking grepru v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/text/text.rs:11:30
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut count: u32 = 0;
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `Result`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/text/text.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |         for _ in reader.read_to_string(&mut text) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 12 -         for _ in reader.read_to_string(&mut text) {
[INFO] [stdout] 12 +         while let Ok(_) = reader.read_to_string(&mut text) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 12 -         for _ in reader.read_to_string(&mut text) {
[INFO] [stdout] 12 +         if let Ok(_) = reader.read_to_string(&mut text) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking assert_cmd v0.10.2
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/text/text.rs:11:30
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let mut count: u32 = 0;
[INFO] [stdout]    |                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: for loop over a `Result`. This is more readably written as an `if let` statement
[INFO] [stdout]   --> src/text/text.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |         for _ in reader.read_to_string(&mut text) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(for_loops_over_fallibles)]` on by default
[INFO] [stdout] help: to check pattern in a loop use `while let`
[INFO] [stdout]    |
[INFO] [stdout] 12 -         for _ in reader.read_to_string(&mut text) {
[INFO] [stdout] 12 +         while let Ok(_) = reader.read_to_string(&mut text) {
[INFO] [stdout]    |
[INFO] [stdout] help: consider using `if let` to clear intent
[INFO] [stdout]    |
[INFO] [stdout] 12 -         for _ in reader.read_to_string(&mut text) {
[INFO] [stdout] 12 +         if let Ok(_) = reader.read_to_string(&mut text) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> tests/cli.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.72s
[INFO] running `Command { std: "docker" "inspect" "78411950f5e89878f8182e80fa758c91dc5aa727f6e619fc8617658f8f893ad3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78411950f5e89878f8182e80fa758c91dc5aa727f6e619fc8617658f8f893ad3", kill_on_drop: false }`
[INFO] [stdout] 78411950f5e89878f8182e80fa758c91dc5aa727f6e619fc8617658f8f893ad3