[INFO] fetching crate silkbag 0.0.1...
[INFO] checking silkbag-0.0.1 against beta for pr-78714
[INFO] extracting crate silkbag 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate silkbag 0.0.1 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 silkbag 0.0.1
[INFO] finished tweaking crates.io crate silkbag 0.0.1
[INFO] tweaked toml for crates.io crate silkbag 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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" "+beta" "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-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" "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] 45acf5c4ffeee60a9231e7c90faea75a1b8de3dc47f8cd2162da403ffd9bcb49
[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" "45acf5c4ffeee60a9231e7c90faea75a1b8de3dc47f8cd2162da403ffd9bcb49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45acf5c4ffeee60a9231e7c90faea75a1b8de3dc47f8cd2162da403ffd9bcb49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45acf5c4ffeee60a9231e7c90faea75a1b8de3dc47f8cd2162da403ffd9bcb49", kill_on_drop: false }`
[INFO] [stdout] 45acf5c4ffeee60a9231e7c90faea75a1b8de3dc47f8cd2162da403ffd9bcb49
[INFO] running `Command { std: "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" "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] 8f98cb55b1cb02ced5da2c286f5eb9bcf7f5b48577154c38a84bb578855d0256
[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" "8f98cb55b1cb02ced5da2c286f5eb9bcf7f5b48577154c38a84bb578855d0256", kill_on_drop: false }`
[INFO] [stderr]    Compiling cairo-rs v0.9.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling thiserror v1.0.22
[INFO] [stderr]     Checking miniz-sys v0.1.12
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]     Checking tar v0.4.30
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking imagefmt v4.0.0
[INFO] [stderr]    Compiling glib-macros v0.10.1
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking rand_distr v0.3.0
[INFO] [stderr]    Compiling system-deps v1.3.2
[INFO] [stderr]     Checking num-bigint v0.3.1
[INFO] [stderr]     Checking num-iter v0.1.42
[INFO] [stderr]     Checking simba v0.3.1
[INFO] [stderr]    Compiling glib-sys v0.10.1
[INFO] [stderr]    Compiling gobject-sys v0.10.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.10.0
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking glib v0.10.3
[INFO] [stderr]     Checking nalgebra v0.23.0
[INFO] [stderr]     Checking silkbag v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `Command { std: "docker" "inspect" "8f98cb55b1cb02ced5da2c286f5eb9bcf7f5b48577154c38a84bb578855d0256", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f98cb55b1cb02ced5da2c286f5eb9bcf7f5b48577154c38a84bb578855d0256", kill_on_drop: false }`
[INFO] [stdout] 8f98cb55b1cb02ced5da2c286f5eb9bcf7f5b48577154c38a84bb578855d0256