[INFO] fetching crate flowclib 0.8.8...
[INFO] building flowclib-0.8.8 against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] extracting crate flowclib 0.8.8 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate flowclib 0.8.8 on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowclib 0.8.8
[INFO] finished tweaking crates.io crate flowclib 0.8.8
[INFO] tweaked toml for crates.io crate flowclib 0.8.8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aba8a8aaecfe50173d12dc466fcd1f0fe4b34cccd05a53d0607122268a81e77c
[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" "aba8a8aaecfe50173d12dc466fcd1f0fe4b34cccd05a53d0607122268a81e77c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aba8a8aaecfe50173d12dc466fcd1f0fe4b34cccd05a53d0607122268a81e77c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aba8a8aaecfe50173d12dc466fcd1f0fe4b34cccd05a53d0607122268a81e77c", kill_on_drop: false }`
[INFO] [stdout] aba8a8aaecfe50173d12dc466fcd1f0fe4b34cccd05a53d0607122268a81e77c
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef92f89493d69bec7b763a2dc5371d502ed74145cf6cfb5f2dee583280267b22
[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" "ef92f89493d69bec7b763a2dc5371d502ed74145cf6cfb5f2dee583280267b22", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.19
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling object v0.24.0
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling memory_units v0.3.0
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]    Compiling parity-wasm v0.31.3
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling multimap v0.5.0
[INFO] [stderr]    Compiling erased-serde v0.3.15
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling time v0.2.26
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling serde_yaml v0.8.17
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling shrinkwraprs v0.2.3
[INFO] [stderr]    Compiling wasmi-validation v0.1.0
[INFO] [stderr]    Compiling flow_impl v0.8.5
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling wasmi v0.4.5
[INFO] [stderr]    Compiling addr2line v0.15.1
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling flowrlib v0.8.8
[INFO] [stderr]    Compiling flowclib v0.8.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/model/flow.rs:320:9
[INFO] [stdout]     |
[INFO] [stdout] 320 |         replace(&mut self.connections, Some(connections));
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.15s
[INFO] running `Command { std: "docker" "inspect" "ef92f89493d69bec7b763a2dc5371d502ed74145cf6cfb5f2dee583280267b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef92f89493d69bec7b763a2dc5371d502ed74145cf6cfb5f2dee583280267b22", kill_on_drop: false }`
[INFO] [stdout] ef92f89493d69bec7b763a2dc5371d502ed74145cf6cfb5f2dee583280267b22
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "test" "--frozen" "--no-run" "--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] 7f5be96bef0d661837efdefe9982ef6d9cc66b7e6ebe7fe018c2dff106e5d628
[INFO] running `Command { std: "docker" "start" "-a" "7f5be96bef0d661837efdefe9982ef6d9cc66b7e6ebe7fe018c2dff106e5d628", kill_on_drop: false }`
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/model/flow.rs:320:9
[INFO] [stdout]     |
[INFO] [stdout] 320 |         replace(&mut self.connections, Some(connections));
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tinyvec v1.2.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling unicode-normalization v0.1.18
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling flowclib v0.8.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/model/flow.rs:320:9
[INFO] [stdout]     |
[INFO] [stdout] 320 |         replace(&mut self.connections, Some(connections));
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.26s
[INFO] running `Command { std: "docker" "inspect" "7f5be96bef0d661837efdefe9982ef6d9cc66b7e6ebe7fe018c2dff106e5d628", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f5be96bef0d661837efdefe9982ef6d9cc66b7e6ebe7fe018c2dff106e5d628", kill_on_drop: false }`
[INFO] [stdout] 7f5be96bef0d661837efdefe9982ef6d9cc66b7e6ebe7fe018c2dff106e5d628
