[INFO] fetching crate simulation 0.0.2-alpha.0...
[INFO] checking simulation-0.0.2-alpha.0 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] extracting crate simulation 0.0.2-alpha.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate simulation 0.0.2-alpha.0
[INFO] finished tweaking crates.io crate simulation 0.0.2-alpha.0
[INFO] tweaked toml for crates.io crate simulation 0.0.2-alpha.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate simulation 0.0.2-alpha.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 simulation 0.0.2-alpha.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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pin-project-internal v0.4.5
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 24c5f09dfd381c6297a61909fdaed5be478da9bf2d761e1773e9f318286983a0
[INFO] running `Command { std: "docker" "start" "-a" "24c5f09dfd381c6297a61909fdaed5be478da9bf2d761e1773e9f318286983a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24c5f09dfd381c6297a61909fdaed5be478da9bf2d761e1773e9f318286983a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24c5f09dfd381c6297a61909fdaed5be478da9bf2d761e1773e9f318286983a0", kill_on_drop: false }`
[INFO] [stdout] 24c5f09dfd381c6297a61909fdaed5be478da9bf2d761e1773e9f318286983a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 24e2cfbb2ee8994c6c25b494d65c809e8b844f296c0f3acaf0336d8d37ba1910
[INFO] running `Command { std: "docker" "start" "-a" "24e2cfbb2ee8994c6c25b494d65c809e8b844f296c0f3acaf0336d8d37ba1910", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
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[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking lazy_static v1.4.0
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[INFO] [stderr]     Checking crossbeam-utils v0.6.6
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[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling cc v1.0.46
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[INFO] [stderr]     Checking h2 v0.2.0-alpha.3
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[INFO] [stderr]     Checking tower-buffer v0.3.0-alpha.2
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[INFO] [stderr]     Checking simulation v0.0.2-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/deterministic/network/stream.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |             std::mem::replace(&mut lock.delay, new);
[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]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 141 |             let _ = std::mem::replace(&mut lock.delay, new);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tonic v0.1.0-alpha.3
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/deterministic/network/stream.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |             std::mem::replace(&mut lock.delay, new);
[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]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 141 |             let _ = std::mem::replace(&mut lock.delay, new);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.47s
[INFO] running `Command { std: "docker" "inspect" "24e2cfbb2ee8994c6c25b494d65c809e8b844f296c0f3acaf0336d8d37ba1910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e2cfbb2ee8994c6c25b494d65c809e8b844f296c0f3acaf0336d8d37ba1910", kill_on_drop: false }`
[INFO] [stdout] 24e2cfbb2ee8994c6c25b494d65c809e8b844f296c0f3acaf0336d8d37ba1910
