[INFO] fetching crate du2 0.2.1...
[INFO] testing du2-0.2.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate du2 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate du2 0.2.1
[INFO] finished tweaking crates.io crate du2 0.2.1
[INFO] tweaked toml for crates.io crate du2 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate du2 0.2.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate du2 0.2.1 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.7
[INFO] [stderr]   Downloaded log v0.4.8
[INFO] [stderr]   Downloaded thread_local v1.0.1
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[INFO] [stderr]   Downloaded serde v1.0.114
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[INFO] [stderr]   Downloaded atty v0.2.13
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[INFO] [stderr]   Downloaded users v0.10.0
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[INFO] [stderr]   Downloaded csv v1.1.3
[INFO] [stderr]   Downloaded memchr v2.2.1
[INFO] [stderr]   Downloaded num-format v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5288849b495663a6ca98d2c4d390c3f65aa6e7a1953d0337b3e2a1344fe7f021
[INFO] running `Command { std: "docker" "start" "-a" "5288849b495663a6ca98d2c4d390c3f65aa6e7a1953d0337b3e2a1344fe7f021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5288849b495663a6ca98d2c4d390c3f65aa6e7a1953d0337b3e2a1344fe7f021", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5288849b495663a6ca98d2c4d390c3f65aa6e7a1953d0337b3e2a1344fe7f021", kill_on_drop: false }`
[INFO] [stdout] 5288849b495663a6ca98d2c4d390c3f65aa6e7a1953d0337b3e2a1344fe7f021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ce7cd65e6c152f8dbf39adc413ab15d39686cf92955a7df097127885c856a15
[INFO] running `Command { std: "docker" "start" "-a" "6ce7cd65e6c152f8dbf39adc413ab15d39686cf92955a7df097127885c856a15", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling num-format v0.4.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.3
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling users v0.10.0
[INFO] [stderr]    Compiling cpu-time v1.0.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling structopt-derive v0.4.8
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling structopt v0.3.15
[INFO] [stderr]    Compiling du2 v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:348:21
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let mut dstats: &mut DirStats = if top.dtree.contains_key(parent) {
[INFO] [stdout]     |                     ----^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:404:25
[INFO] [stdout]     |
[INFO] [stdout] 404 |                     let mut upstats = if top.dtree.contains_key(nextpar) {
[INFO] [stdout]     |                         ----^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UserUsage` is never constructed
[INFO] [stdout]    --> src/main.rs:294:8
[INFO] [stdout]     |
[INFO] [stdout] 294 | struct UserUsage {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `long_help` is never read
[INFO] [stdout]    --> src/cli.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout]  46 | pub struct ParLsCfg {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 123 |     pub long_help: bool
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParLsCfg` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn multi_extension(p: & Path) -> Option<Cow<str>> {
[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] 10 | pub fn multi_extension(p: & Path) -> Option<Cow<'_, str>> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.22s
[INFO] running `Command { std: "docker" "inspect" "6ce7cd65e6c152f8dbf39adc413ab15d39686cf92955a7df097127885c856a15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ce7cd65e6c152f8dbf39adc413ab15d39686cf92955a7df097127885c856a15", kill_on_drop: false }`
[INFO] [stdout] 6ce7cd65e6c152f8dbf39adc413ab15d39686cf92955a7df097127885c856a15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 317bb343f3f188c5e966f889df1012cdd2ebae69a2304f1cadc0df104fa54e62
[INFO] running `Command { std: "docker" "start" "-a" "317bb343f3f188c5e966f889df1012cdd2ebae69a2304f1cadc0df104fa54e62", kill_on_drop: false }`
[INFO] [stderr]    Compiling du2 v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:348:21
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let mut dstats: &mut DirStats = if top.dtree.contains_key(parent) {
[INFO] [stdout]     |                     ----^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:404:25
[INFO] [stdout]     |
[INFO] [stdout] 404 |                     let mut upstats = if top.dtree.contains_key(nextpar) {
[INFO] [stdout]     |                         ----^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UserUsage` is never constructed
[INFO] [stdout]    --> src/main.rs:294:8
[INFO] [stdout]     |
[INFO] [stdout] 294 | struct UserUsage {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `long_help` is never read
[INFO] [stdout]    --> src/cli.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout]  46 | pub struct ParLsCfg {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 123 |     pub long_help: bool
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParLsCfg` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/util.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn multi_extension(p: & Path) -> Option<Cow<str>> {
[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] 10 | pub fn multi_extension(p: & Path) -> Option<Cow<'_, str>> {
[INFO] [stdout]    |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "317bb343f3f188c5e966f889df1012cdd2ebae69a2304f1cadc0df104fa54e62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "317bb343f3f188c5e966f889df1012cdd2ebae69a2304f1cadc0df104fa54e62", kill_on_drop: false }`
[INFO] [stdout] 317bb343f3f188c5e966f889df1012cdd2ebae69a2304f1cadc0df104fa54e62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 36422ae58d37ca2710ed9a8ec27e1e0d6ed9b8998e8974eeb054079d4b06f1b4
[INFO] running `Command { std: "docker" "start" "-a" "36422ae58d37ca2710ed9a8ec27e1e0d6ed9b8998e8974eeb054079d4b06f1b4", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:348:21
[INFO] [stderr]     |
[INFO] [stderr] 348 |                 let mut dstats: &mut DirStats = if top.dtree.contains_key(parent) {
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:404:25
[INFO] [stderr]     |
[INFO] [stderr] 404 |                     let mut upstats = if top.dtree.contains_key(nextpar) {
[INFO] [stderr]     |                         ----^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `UserUsage` is never constructed
[INFO] [stderr]    --> src/main.rs:294:8
[INFO] [stderr]     |
[INFO] [stderr] 294 | struct UserUsage {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `long_help` is never read
[INFO] [stderr]    --> src/cli.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr]  46 | pub struct ParLsCfg {
[INFO] [stderr]     |            -------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 123 |     pub long_help: bool
[INFO] [stderr]     |         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `ParLsCfg` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/util.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn multi_extension(p: & Path) -> Option<Cow<str>> {
[INFO] [stderr]    |                           ^^^^^^            ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn multi_extension(p: & Path) -> Option<Cow<'_, str>> {
[INFO] [stderr]    |                                                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: `du2` (bin "du2" test) generated 5 warnings (run `cargo fix --bin "du2" -p du2 --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/du2-fbc55f7119190d06)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "36422ae58d37ca2710ed9a8ec27e1e0d6ed9b8998e8974eeb054079d4b06f1b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36422ae58d37ca2710ed9a8ec27e1e0d6ed9b8998e8974eeb054079d4b06f1b4", kill_on_drop: false }`
[INFO] [stdout] 36422ae58d37ca2710ed9a8ec27e1e0d6ed9b8998e8974eeb054079d4b06f1b4
