[INFO] fetching crate hbbft 0.1.1...
[INFO] checking hbbft-0.1.1 against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] extracting crate hbbft 0.1.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate hbbft 0.1.1 on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hbbft 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate hbbft 0.1.1
[INFO] tweaked toml for crates.io crate hbbft 0.1.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded integer-sqrt v0.1.5
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[INFO] [stderr]   Downloaded proptest v0.8.7
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[INFO] [stderr]   Downloaded docopt v1.1.0
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[INFO] [stderr]   Downloaded rand04_compat v0.1.1
[INFO] [stderr]   Downloaded pairing v0.14.2
[INFO] [stderr]   Downloaded hex_fmt v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45eee4fef4372f207b8304e73309399328b07204026888123f491f983b00e6cd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "45eee4fef4372f207b8304e73309399328b07204026888123f491f983b00e6cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45eee4fef4372f207b8304e73309399328b07204026888123f491f983b00e6cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45eee4fef4372f207b8304e73309399328b07204026888123f491f983b00e6cd", kill_on_drop: false }`
[INFO] [stdout] 45eee4fef4372f207b8304e73309399328b07204026888123f491f983b00e6cd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1e0990be636b652856eda6eadc5d0725e7389f3b15cfd66bd6ca365d8c75ef3d
[INFO] running `Command { std: "docker" "start" "-a" "1e0990be636b652856eda6eadc5d0725e7389f3b15cfd66bd6ca365d8c75ef3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memchr v2.3.3
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[INFO] [stderr]    Compiling memsec v0.5.7
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking hex_fmt v0.3.0
[INFO] [stderr]     Checking termcolor v1.1.0
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[INFO] [stderr]     Checking thread_local v1.0.1
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[INFO] [stderr]    Compiling parking_lot_core v0.4.0
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[INFO] [stderr]     Checking pairing v0.14.2
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rayon-core v1.8.0
[INFO] [stderr]     Checking rand04_compat v0.1.1
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking proptest v0.8.7
[INFO] [stderr]    Compiling rand_derive v0.5.0
[INFO] [stderr]     Checking crossbeam v0.6.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling derivative v1.0.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking threshold_crypto v0.3.2
[INFO] [stderr]     Checking docopt v1.1.0
[INFO] [stderr]     Checking hbbft v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/subset/subset.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         #[derivative(Debug(format_with = "util::fmt_hex"))] Vec<u8>,
[INFO] [stdout]    |         ^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/subset/subset.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         #[derivative(Debug(format_with = "util::fmt_hex"))] Vec<u8>,
[INFO] [stdout]    |         ^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         (prev.high != self.high || prev.current != self.current)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         (prev.current != self.current || prev.low != self.low)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> tests/binary_agreement_mitm.rs:239:26
[INFO] [stdout]     |
[INFO] [stdout] 239 | const NUM_NODES: usize = (NODES_PER_GROUP * 3 + 1);
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         (prev.high != self.high || prev.current != self.current)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         (prev.current != self.current || prev.low != self.low)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         (prev.high != self.high || prev.current != self.current)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         (prev.current != self.current || prev.low != self.low)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> tests/net_dynamic_hb.rs:77:1
[INFO] [stdout]    |
[INFO] [stdout] 77 | /// Proptest wrapper for `do_drop_and_re_add`.
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         (prev.high != self.high || prev.current != self.current)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         (prev.current != self.current || prev.low != self.low)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> tests/binary_agreement.rs:61:1
[INFO] [stdout]    |
[INFO] [stdout] 61 | /// Proptest wrapper for `binary_agreement` that runs the test function on generated configurations.
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         (prev.high != self.high || prev.current != self.current)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         (prev.current != self.current || prev.low != self.low)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         (prev.high != self.high || prev.current != self.current)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         (prev.current != self.current || prev.low != self.low)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         (prev.high != self.high || prev.current != self.current)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         (prev.current != self.current || prev.low != self.low)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         (prev.high != self.high || prev.current != self.current)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         (prev.current != self.current || prev.low != self.low)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         (prev.high != self.high || prev.current != self.current)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> tests/net/proptest.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |         (prev.current != self.current || prev.low != self.low)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused `hbbft::Step` in tuple element 1 that must be used
[INFO] [stdout]    --> tests/binary_agreement_mitm.rs:482:9
[INFO] [stdout]     |
[INFO] [stdout] 482 |         net.crank_expect(&mut rng);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> tests/binary_agreement_mitm.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout] 1   | #![deny(unused_must_use)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: The algorithm step result must be used.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hbbft`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1e0990be636b652856eda6eadc5d0725e7389f3b15cfd66bd6ca365d8c75ef3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e0990be636b652856eda6eadc5d0725e7389f3b15cfd66bd6ca365d8c75ef3d", kill_on_drop: false }`
[INFO] [stdout] 1e0990be636b652856eda6eadc5d0725e7389f3b15cfd66bd6ca365d8c75ef3d
