[INFO] fetching crate splinter 0.4.0...
[INFO] checking splinter-0.4.0 against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] extracting crate splinter 0.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate splinter 0.4.0 on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate splinter 0.4.0
[INFO] finished tweaking crates.io crate splinter 0.4.0
[INFO] tweaked toml for crates.io crate splinter 0.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate splinter 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zeroize v0.5.2
[INFO] [stderr]   Downloaded serial_test v0.3.2
[INFO] [stderr]   Downloaded serial_test_derive v0.3.2
[INFO] [stderr]   Downloaded int_traits v0.1.1
[INFO] [stderr]   Downloaded actix-web-actors v1.0.4
[INFO] [stderr]   Downloaded zmq-sys v0.11.0
[INFO] [stderr]   Downloaded bcrypt v0.6.3
[INFO] [stderr]   Downloaded zmq v0.9.2
[INFO] [stderr]   Downloaded secp256k1 v0.7.1
[INFO] [stderr]   Downloaded blake2 v0.8.1
[INFO] [stderr]   Downloaded websocket-base v0.24.0
[INFO] [stderr]   Downloaded websocket v0.24.0
[INFO] [stderr]   Downloaded amcl v0.2.0
[INFO] [stderr]   Downloaded sawtooth-sdk v0.4.4
[INFO] [stderr]   Downloaded atomicwrites v0.2.5
[INFO] [stderr]   Downloaded ursa v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", 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] aeb9de387abfecd9f8bfcd77103ccbad57939f115fe1cc7655cda9d0c1488067
[INFO] running `Command { std: "docker" "start" "-a" "aeb9de387abfecd9f8bfcd77103ccbad57939f115fe1cc7655cda9d0c1488067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aeb9de387abfecd9f8bfcd77103ccbad57939f115fe1cc7655cda9d0c1488067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeb9de387abfecd9f8bfcd77103ccbad57939f115fe1cc7655cda9d0c1488067", kill_on_drop: false }`
[INFO] [stdout] aeb9de387abfecd9f8bfcd77103ccbad57939f115fe1cc7655cda9d0c1488067
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0858d45e91d6e159c11aed4c2cce3b37a45e8aa258c7491e0c5bb9d9e4d2a1a2
[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" "0858d45e91d6e159c11aed4c2cce3b37a45e8aa258c7491e0c5bb9d9e4d2a1a2", kill_on_drop: false }`
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[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
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[INFO] [stderr]    Compiling cc v1.0.26
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[INFO] [stderr]    Compiling version_check v0.9.2
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[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]     Checking once_cell v1.4.0
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[INFO] [stderr]     Checking crossbeam-utils v0.6.6
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[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling serial_test_derive v0.3.2
[INFO] [stderr]    Compiling splinter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serial_test v0.3.2
[INFO] [stderr]     Checking pin-project v0.4.17
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[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/admin/service/shared.rs:1034:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |         std::mem::replace(&mut self.pending_protocol_payloads, protocol);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/admin/service/shared.rs:1044:9
[INFO] [stdout]      |
[INFO] [stdout] 1044 |         std::mem::replace(&mut self.unpeered_payloads, unpeered_payloads);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/admin/service/shared.rs:1060:9
[INFO] [stdout]      |
[INFO] [stdout] 1060 |         std::mem::replace(&mut self.unpeered_payloads, still_unpeered);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/admin/service/shared.rs:1156:9
[INFO] [stdout]      |
[INFO] [stdout] 1156 |         std::mem::replace(&mut self.pending_protocol_payloads, waiting);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/admin/service/shared.rs:1034:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |         std::mem::replace(&mut self.pending_protocol_payloads, protocol);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/admin/service/shared.rs:1044:9
[INFO] [stdout]      |
[INFO] [stdout] 1044 |         std::mem::replace(&mut self.unpeered_payloads, unpeered_payloads);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/admin/service/shared.rs:1060:9
[INFO] [stdout]      |
[INFO] [stdout] 1060 |         std::mem::replace(&mut self.unpeered_payloads, still_unpeered);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]     --> src/admin/service/shared.rs:1156:9
[INFO] [stdout]      |
[INFO] [stdout] 1156 |         std::mem::replace(&mut self.pending_protocol_payloads, waiting);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 47s
[INFO] running `Command { std: "docker" "inspect" "0858d45e91d6e159c11aed4c2cce3b37a45e8aa258c7491e0c5bb9d9e4d2a1a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0858d45e91d6e159c11aed4c2cce3b37a45e8aa258c7491e0c5bb9d9e4d2a1a2", kill_on_drop: false }`
[INFO] [stdout] 0858d45e91d6e159c11aed4c2cce3b37a45e8aa258c7491e0c5bb9d9e4d2a1a2