[INFO] fetching crate rsgrep 0.5.0...
[INFO] checking rsgrep-0.5.0 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] extracting crate rsgrep 0.5.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate rsgrep 0.5.0
[INFO] finished tweaking crates.io crate rsgrep 0.5.0
[INFO] tweaked toml for crates.io crate rsgrep 0.5.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rsgrep 0.5.0 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 crates.io crate rsgrep 0.5.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winapi-util v0.1.2
[INFO] [stderr]   Downloaded termcolor v1.0.5
[INFO] [stderr]   Downloaded wincolor v1.0.2
[INFO] [stderr]   Downloaded thread_local v0.3.6
[INFO] [stderr]   Downloaded strsim v0.8.0
[INFO] [stderr]   Downloaded atty v0.2.13
[INFO] [stderr]   Downloaded memchr v2.2.1
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded unicode-width v0.1.6
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded bitflags v1.2.0
[INFO] [stderr]   Downloaded content_inspector v0.2.4
[INFO] [stderr]   Downloaded aho-corasick v0.7.6
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.12
[INFO] [stderr]   Downloaded regex v1.3.1
[INFO] [stderr]   Downloaded libc v0.2.62
[INFO] [stderr]   Downloaded winapi v0.3.8
[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] baed349d32d8912d4b26b27fb359a12f4212d8159a14e5fad20180ea71f73bed
[INFO] running `Command { std: "docker" "start" "-a" "baed349d32d8912d4b26b27fb359a12f4212d8159a14e5fad20180ea71f73bed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "baed349d32d8912d4b26b27fb359a12f4212d8159a14e5fad20180ea71f73bed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baed349d32d8912d4b26b27fb359a12f4212d8159a14e5fad20180ea71f73bed", kill_on_drop: false }`
[INFO] [stdout] baed349d32d8912d4b26b27fb359a12f4212d8159a14e5fad20180ea71f73bed
[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] 46fcdddb0ec732f274d79e2ffa6863ed544991fae3ed43042a846ea3c1181f81
[INFO] running `Command { std: "docker" "start" "-a" "46fcdddb0ec732f274d79e2ffa6863ed544991fae3ed43042a846ea3c1181f81", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking content_inspector v0.2.4
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking rsgrep v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: bounds on `Self: Drop` are most likely incorrect, consider instead using `std::mem::needs_drop` to detect whether a type can be trivially dropped
[INFO] [stdout]   --> src/rsgrep.rs:34:19
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub trait Writer: Drop {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(drop_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rsgrep.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn new(output: &mut Output) -> LocWriter {
[INFO] [stdout]    |                        ^^^^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn new(output: &mut Output) -> LocWriter<'_> {
[INFO] [stdout]    |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rsgrep.rs:70:24
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn new(output: &mut Output) -> ErrWriter {
[INFO] [stdout]    |                        ^^^^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn new(output: &mut Output) -> ErrWriter<'_> {
[INFO] [stdout]    |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rsgrep.rs:97:24
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn new(output: &mut Output) -> WarnWriter {
[INFO] [stdout]    |                        ^^^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn new(output: &mut Output) -> WarnWriter<'_> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on `Self: Drop` are most likely incorrect, consider instead using `std::mem::needs_drop` to detect whether a type can be trivially dropped
[INFO] [stdout]   --> src/rsgrep.rs:34:19
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub trait Writer: Drop {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(drop_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rsgrep.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn new(output: &mut Output) -> LocWriter {
[INFO] [stdout]    |                        ^^^^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn new(output: &mut Output) -> LocWriter<'_> {
[INFO] [stdout]    |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rsgrep.rs:70:24
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn new(output: &mut Output) -> ErrWriter {
[INFO] [stdout]    |                        ^^^^^^^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn new(output: &mut Output) -> ErrWriter<'_> {
[INFO] [stdout]    |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/rsgrep.rs:97:24
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn new(output: &mut Output) -> WarnWriter {
[INFO] [stdout]    |                        ^^^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn new(output: &mut Output) -> WarnWriter<'_> {
[INFO] [stdout]    |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.45s
[INFO] running `Command { std: "docker" "inspect" "46fcdddb0ec732f274d79e2ffa6863ed544991fae3ed43042a846ea3c1181f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46fcdddb0ec732f274d79e2ffa6863ed544991fae3ed43042a846ea3c1181f81", kill_on_drop: false }`
[INFO] [stdout] 46fcdddb0ec732f274d79e2ffa6863ed544991fae3ed43042a846ea3c1181f81