[INFO] fetching crate xstack 0.2.17...
[INFO] checking xstack-0.2.17 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate xstack 0.2.17 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate xstack 0.2.17 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xstack 0.2.17
[INFO] finished tweaking crates.io crate xstack 0.2.17
[INFO] tweaked toml for crates.io crate xstack 0.2.17 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 174 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.13.1 (available: v0.22.1)
[INFO] [stderr]       Adding block-buffer v0.9.0 (available: v0.10.4)
[INFO] [stderr]       Adding crypto-mac v0.8.0 (available: v0.11.1)
[INFO] [stderr]       Adding digest v0.9.0 (available: v0.10.7)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v1.1.0)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (available: v0.4.0)
[INFO] [stderr]       Adding hmac v0.8.1 (available: v0.12.1)
[INFO] [stderr]       Adding idna v0.5.0 (available: v1.0.2)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding sha2 v0.9.9 (available: v0.10.8)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[INFO] [stderr]       Adding unsigned-varint v0.7.2 (available: v0.8.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding which v4.4.2 (available: v6.0.3)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded protoc-bin-vendored v3.0.0
[INFO] [stderr]   Downloaded protobuf-codegen v3.5.1
[INFO] [stderr]   Downloaded protobuf-parse v3.5.1
[INFO] [stderr]   Downloaded protoc-bin-vendored-linux-x86_32 v3.0.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-linux-aarch_64 v3.0.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-linux-x86_64 v3.0.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-linux-ppcle_64 v3.0.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-macos-x86_64 v3.0.0
[INFO] [stderr]   Downloaded protoc-bin-vendored-win32 v3.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b57525c027d84fc07ed7270670b51f3c8b10d51b8f2c1938dbb38372d7063937
[INFO] running `Command { std: "docker" "start" "-a" "b57525c027d84fc07ed7270670b51f3c8b10d51b8f2c1938dbb38372d7063937", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b57525c027d84fc07ed7270670b51f3c8b10d51b8f2c1938dbb38372d7063937", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b57525c027d84fc07ed7270670b51f3c8b10d51b8f2c1938dbb38372d7063937", kill_on_drop: false }`
[INFO] [stdout] b57525c027d84fc07ed7270670b51f3c8b10d51b8f2c1938dbb38372d7063937
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6de06c687a65d62af97785d5f70fc07027e2ea1db81753b16b305026f83bafd9
[INFO] running `Command { std: "docker" "start" "-a" "6de06c687a65d62af97785d5f70fc07027e2ea1db81753b16b305026f83bafd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling curve25519-dalek-derive v0.1.1
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking ed25519 v2.2.3
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]    Compiling data-encoding-macro-internal v0.1.13
[INFO] [stderr]    Compiling bigdecimal v0.4.5
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking core2 v0.4.0
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking multihash v0.19.1
[INFO] [stderr]     Checking data-encoding-macro v0.1.15
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking hkdf v0.12.4
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling protobuf v3.5.1
[INFO] [stderr]     Checking multibase v0.9.1
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking protobuf-support v3.5.1
[INFO] [stderr]    Compiling bitmask-enum v2.2.4
[INFO] [stderr]     Checking cooked-waker v5.0.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ed25519-dalek v2.1.1
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking unsigned-varint v0.8.0
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking rasi v0.2.6
[INFO] [stderr]     Checking futures-map v0.2.8
[INFO] [stderr]     Checking multistream-select v0.13.0
[INFO] [stderr]     Checking libp2p-identity v0.2.9
[INFO] [stderr]     Checking multiaddr v0.18.2
[INFO] [stderr]     Checking xstack v0.2.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.28s
[INFO] running `Command { std: "docker" "inspect" "6de06c687a65d62af97785d5f70fc07027e2ea1db81753b16b305026f83bafd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6de06c687a65d62af97785d5f70fc07027e2ea1db81753b16b305026f83bafd9", kill_on_drop: false }`
[INFO] [stdout] 6de06c687a65d62af97785d5f70fc07027e2ea1db81753b16b305026f83bafd9