[INFO] fetching crate kuska-handshake 0.2.0...
[INFO] checking kuska-handshake-0.2.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate kuska-handshake 0.2.0 into /workspace/builds/worker-42/source
[INFO] validating manifest of crates.io crate kuska-handshake 0.2.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kuska-handshake 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate kuska-handshake 0.2.0
[INFO] tweaked toml for crates.io crate kuska-handshake 0.2.0 written to /workspace/builds/worker-42/source/Cargo.toml
[INFO] crate crates.io crate kuska-handshake 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce5d9cd24031ccc2231e59df52be47e97b5677ff502c32c2a6359a0e48b5bbd9
[INFO] running `Command { std: "docker" "start" "-a" "ce5d9cd24031ccc2231e59df52be47e97b5677ff502c32c2a6359a0e48b5bbd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce5d9cd24031ccc2231e59df52be47e97b5677ff502c32c2a6359a0e48b5bbd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce5d9cd24031ccc2231e59df52be47e97b5677ff502c32c2a6359a0e48b5bbd9", kill_on_drop: false }`
[INFO] [stdout] ce5d9cd24031ccc2231e59df52be47e97b5677ff502c32c2a6359a0e48b5bbd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-42/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b08a6f9107c991509ebe05ddfe10e73aa073b631a7093c647a6e98e1ee72f434
[INFO] running `Command { std: "docker" "start" "-a" "b08a6f9107c991509ebe05ddfe10e73aa073b631a7093c647a6e98e1ee72f434", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking waker-fn v1.1.0
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[INFO] [stderr]     Checking fastrand v1.5.0
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[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling pkg-config v0.3.20
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
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[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
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[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]    Compiling libsodium-sys v0.2.7
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking async-process v1.2.0
[INFO] [stderr]     Checking async-std v1.10.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking kuska-sodiumoxide v0.2.5-0
[INFO] [stderr]     Checking kuska-handshake v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/boxstream.rs:399:13
[INFO] [stdout]     |
[INFO] [stdout] 399 |             io::Error::from(error);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] running `Command { std: "docker" "inspect" "b08a6f9107c991509ebe05ddfe10e73aa073b631a7093c647a6e98e1ee72f434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b08a6f9107c991509ebe05ddfe10e73aa073b631a7093c647a6e98e1ee72f434", kill_on_drop: false }`
[INFO] [stdout] b08a6f9107c991509ebe05ddfe10e73aa073b631a7093c647a6e98e1ee72f434