[INFO] fetching crate stellar_vanity 0.8.0...
[INFO] checking stellar_vanity-0.8.0 against beta for pr-78714
[INFO] extracting crate stellar_vanity 0.8.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate stellar_vanity 0.8.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stellar_vanity 0.8.0
[INFO] finished tweaking crates.io crate stellar_vanity 0.8.0
[INFO] tweaked toml for crates.io crate stellar_vanity 0.8.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate stellar_vanity 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.23
[INFO] [stderr]   Downloaded criterion-plot v0.4.2
[INFO] [stderr]   Downloaded oorandom v11.1.1
[INFO] [stderr]   Downloaded base32 v0.4.0
[INFO] [stderr]   Downloaded tinytemplate v1.0.4
[INFO] [stderr]   Downloaded fstrings-proc-macro v0.2.3
[INFO] [stderr]   Downloaded fstrings v0.2.3
[INFO] [stderr]   Downloaded plotters v0.2.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89cc627801576f3b7ea9db389bbfb7c73300b0972bd9d8de01d0febd6fcde3cc
[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" "89cc627801576f3b7ea9db389bbfb7c73300b0972bd9d8de01d0febd6fcde3cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89cc627801576f3b7ea9db389bbfb7c73300b0972bd9d8de01d0febd6fcde3cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89cc627801576f3b7ea9db389bbfb7c73300b0972bd9d8de01d0febd6fcde3cc", kill_on_drop: false }`
[INFO] [stdout] 89cc627801576f3b7ea9db389bbfb7c73300b0972bd9d8de01d0febd6fcde3cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b335006fff5875496e0b6ca4beaf14e0ed095dba1e36e7f8c7cac6e30ab7fe24
[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" "b335006fff5875496e0b6ca4beaf14e0ed095dba1e36e7f8c7cac6e30ab7fe24", 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]    Compiling syn v1.0.23
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]     Checking zeroize v1.1.0
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]     Checking oorandom v11.1.1
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking plotters v0.2.14
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking tinytemplate v1.0.4
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking criterion-plot v0.4.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking curve25519-dalek v2.0.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking ed25519-dalek v1.0.0-pre.3
[INFO] [stderr]    Compiling fstrings-proc-macro v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]     Checking fstrings v0.2.3
[INFO] [stderr]     Checking stellar_vanity v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion v0.3.2
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> benches/benchmark.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |             thread_tx.send(keypair);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> benches/benchmark.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     rx.recv();
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.03s
[INFO] running `Command { std: "docker" "inspect" "b335006fff5875496e0b6ca4beaf14e0ed095dba1e36e7f8c7cac6e30ab7fe24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b335006fff5875496e0b6ca4beaf14e0ed095dba1e36e7f8c7cac6e30ab7fe24", kill_on_drop: false }`
[INFO] [stdout] b335006fff5875496e0b6ca4beaf14e0ed095dba1e36e7f8c7cac6e30ab7fe24