[INFO] fetching crate gemblockchain 0.1.1...
[INFO] checking gemblockchain-0.1.1 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate gemblockchain 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate gemblockchain 0.1.1 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gemblockchain 0.1.1
[INFO] finished tweaking crates.io crate gemblockchain 0.1.1
[INFO] tweaked toml for crates.io crate gemblockchain 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42ab57fd195e44d1d72ba99dcb49dc456e6d4897dc1ccb922c3449bbabfc2818
[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" "42ab57fd195e44d1d72ba99dcb49dc456e6d4897dc1ccb922c3449bbabfc2818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42ab57fd195e44d1d72ba99dcb49dc456e6d4897dc1ccb922c3449bbabfc2818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42ab57fd195e44d1d72ba99dcb49dc456e6d4897dc1ccb922c3449bbabfc2818", kill_on_drop: false }`
[INFO] [stdout] 42ab57fd195e44d1d72ba99dcb49dc456e6d4897dc1ccb922c3449bbabfc2818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f651f67fcc8a7a9a2fb7930b1d7c89a2ebe0bff6d85e16b36beebe08bb1dbb5
[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" "3f651f67fcc8a7a9a2fb7930b1d7c89a2ebe0bff6d85e16b36beebe08bb1dbb5", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking object v0.22.0
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking zeroize v1.2.0
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking base58 v0.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling clear_on_drop v0.2.4
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]    Compiling curve25519-dalek v1.2.4
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking blake2 v0.7.1
[INFO] [stderr]     Checking pbkdf2 v0.3.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking curve25519-dalek v2.1.0
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking sha3 v0.8.2
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.3
[INFO] [stderr]     Checking backtrace v0.3.55
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking tiny-bip39 v0.7.3
[INFO] [stderr]     Checking gemblockchain v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `from_bytes`
[INFO] [stdout]   --> src/bytebuffer.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn from_bytes(b: &[u8]) -> Buffer {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_bytes`
[INFO] [stdout]   --> src/bytebuffer.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn from_bytes(b: &[u8]) -> Buffer {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 33.69s
[INFO] running `Command { std: "docker" "inspect" "3f651f67fcc8a7a9a2fb7930b1d7c89a2ebe0bff6d85e16b36beebe08bb1dbb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f651f67fcc8a7a9a2fb7930b1d7c89a2ebe0bff6d85e16b36beebe08bb1dbb5", kill_on_drop: false }`
[INFO] [stdout] 3f651f67fcc8a7a9a2fb7930b1d7c89a2ebe0bff6d85e16b36beebe08bb1dbb5