[INFO] crate ardop_interface 0.4.0 is already in cache
[INFO] checking ardop_interface-0.4.0 against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] extracting crate ardop_interface 0.4.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate ardop_interface 0.4.0 on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ardop_interface 0.4.0
[INFO] finished tweaking crates.io crate ardop_interface 0.4.0
[INFO] tweaked toml for crates.io crate ardop_interface 0.4.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a48ea1935a2f4195b2f5b8510b08e7003e6984966bd933dfb7163b83bb2f706
[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" "0a48ea1935a2f4195b2f5b8510b08e7003e6984966bd933dfb7163b83bb2f706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a48ea1935a2f4195b2f5b8510b08e7003e6984966bd933dfb7163b83bb2f706", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a48ea1935a2f4195b2f5b8510b08e7003e6984966bd933dfb7163b83bb2f706", kill_on_drop: false }`
[INFO] [stdout] 0a48ea1935a2f4195b2f5b8510b08e7003e6984966bd933dfb7163b83bb2f706
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0dc4b2c86fade399a87c4e94a77bfa7b817c70a96a16873c9adb5675dd8b1f6
[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" "e0dc4b2c86fade399a87c4e94a77bfa7b817c70a96a16873c9adb5675dd8b1f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.64
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling wasm-bindgen v0.2.64
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking parking v1.0.4
[INFO] [stderr]     Checking waker-fn v1.0.0
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking fastrand v1.3.3
[INFO] [stderr]     Checking send_wrapper v0.4.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking enum_derive v0.1.7
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking concurrent-queue v1.1.1
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.64
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.64
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.64
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking js-sys v0.3.41
[INFO] [stderr]     Checking web-sys v0.3.41
[INFO] [stderr]     Checking blocking v0.4.6
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking futures_codec v0.3.4
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stderr]     Checking gloo-timers v0.2.1
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking async-std v1.6.2
[INFO] [stderr]     Checking ardop_interface v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tncio/controlstream.rs:220:19
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]     |                   ----^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tncio/controlstream.rs:247:19
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]     |                   ----^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tncio/controlstream.rs:220:19
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn poll_ready(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]     |                   ----^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tncio/controlstream.rs:247:19
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn poll_close(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Result<(), Self::Error>> {
[INFO] [stdout]     |                   ----^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `Command { std: "docker" "inspect" "e0dc4b2c86fade399a87c4e94a77bfa7b817c70a96a16873c9adb5675dd8b1f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0dc4b2c86fade399a87c4e94a77bfa7b817c70a96a16873c9adb5675dd8b1f6", kill_on_drop: false }`
[INFO] [stdout] e0dc4b2c86fade399a87c4e94a77bfa7b817c70a96a16873c9adb5675dd8b1f6