[INFO] crate libp2p-kad 0.14.0-alpha.1 is already in cache
[INFO] checking libp2p-kad-0.14.0-alpha.1 against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] extracting crate libp2p-kad 0.14.0-alpha.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libp2p-kad 0.14.0-alpha.1 on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate libp2p-kad 0.14.0-alpha.1
[INFO] finished tweaking crates.io crate libp2p-kad 0.14.0-alpha.1
[INFO] tweaked toml for crates.io crate libp2p-kad 0.14.0-alpha.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "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" "/opt/rustwide/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 93b9a70ad8493af317346e6917e689fd219af8557a6c11029f878b9e55b2e127
[INFO] running `"docker" "start" "-a" "93b9a70ad8493af317346e6917e689fd219af8557a6c11029f878b9e55b2e127"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling protobuf v2.8.1
[INFO] [stderr]     Checking bs58 v0.3.0
[INFO] [stderr]     Checking nohash-hasher v0.1.3
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking ipnet v2.2.0
[INFO] [stderr]    Compiling ring v0.16.11
[INFO] [stderr]     Checking quicksink v0.1.1
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking curve25519-dalek v2.0.0
[INFO] [stderr]     Checking blake2 v0.8.1
[INFO] [stderr]     Checking aes-soft v0.3.3
[INFO] [stderr]     Checking twofish v0.2.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking hmac-drbg v0.2.0
[INFO] [stderr]     Checking sha2 v0.8.1
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking aes-ctr v0.3.0
[INFO] [stderr]     Checking uint v0.8.2
[INFO] [stderr]     Checking libsecp256k1 v0.3.4
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.3
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling asn1_der_derive v0.1.2
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.10
[INFO] [stderr]     Checking asn1_der v0.6.3
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]    Compiling futures-macro v0.3.2
[INFO] [stderr]     Checking thiserror v1.0.10
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking futures-util v0.3.2
[INFO] [stderr]     Checking futures-executor v0.3.2
[INFO] [stderr]     Checking futures v0.3.2
[INFO] [stderr]     Checking futures_codec v0.3.4
[INFO] [stderr]     Checking rw-stream-sink v0.2.1
[INFO] [stderr]     Checking wasm-timer v0.2.4
[INFO] [stderr]     Checking yamux v0.4.2
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yamux-0.4.2/src/error.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     #[error("i/o error: {0}")]
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yamux-0.4.2/src/error.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |     #[error("decode error: {0}")]
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yamux-0.4.2/src/frame/header.rs:389:13
[INFO] [stderr]     |
[INFO] [stderr] 389 |     #[error("unknown version: {0}")]
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yamux-0.4.2/src/frame/header.rs:393:13
[INFO] [stderr]     |
[INFO] [stderr] 393 |     #[error("unknown frame type: {0}")]
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yamux-0.4.2/src/frame/header.rs:397:43
[INFO] [stderr]     |
[INFO] [stderr] 397 |     #[error("unknown flags type: {:0x}", .0)]
[INFO] [stderr]     |                                           ^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yamux-0.4.2/src/frame/io.rs:205:13
[INFO] [stderr]     |
[INFO] [stderr] 205 |     #[error("i/o error: {0}")]
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yamux-0.4.2/src/frame/io.rs:209:13
[INFO] [stderr]     |
[INFO] [stderr] 209 |     #[error("decode error: {0}")]
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yamux-0.4.2/src/frame/io.rs:213:13
[INFO] [stderr]     |
[INFO] [stderr] 213 |     #[error("frame body is too large ({0})")]
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr]     Checking unsigned-varint v0.3.0
[INFO] [stderr] error: aborting due to 8 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `yamux`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "93b9a70ad8493af317346e6917e689fd219af8557a6c11029f878b9e55b2e127"`
[INFO] running `"docker" "rm" "-f" "93b9a70ad8493af317346e6917e689fd219af8557a6c11029f878b9e55b2e127"`
[INFO] [stdout] 93b9a70ad8493af317346e6917e689fd219af8557a6c11029f878b9e55b2e127