[INFO] cloning repository https://github.com/drahnr/overlay-fs-gen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/drahnr/overlay-fs-gen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrahnr%2Foverlay-fs-gen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrahnr%2Foverlay-fs-gen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d923033806877a2af1d2a504ec92f897b5721ea9
[INFO] checking drahnr/overlay-fs-gen against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrahnr%2Foverlay-fs-gen" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/drahnr/overlay-fs-gen on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/drahnr/overlay-fs-gen
[INFO] finished tweaking git repo https://github.com/drahnr/overlay-fs-gen
[INFO] tweaked toml for git repo https://github.com/drahnr/overlay-fs-gen written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/drahnr/overlay-fs-gen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a456bc6374d678ad4753eeea210841c2f4fc91a3d35369b38f0c7a46dbb85760
[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" "a456bc6374d678ad4753eeea210841c2f4fc91a3d35369b38f0c7a46dbb85760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a456bc6374d678ad4753eeea210841c2f4fc91a3d35369b38f0c7a46dbb85760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a456bc6374d678ad4753eeea210841c2f4fc91a3d35369b38f0c7a46dbb85760", kill_on_drop: false }`
[INFO] [stdout] a456bc6374d678ad4753eeea210841c2f4fc91a3d35369b38f0c7a46dbb85760
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8126f5fd5f8cba3786dffbfe2fe94f8a47a05e4b2a55e877568e60636d071230
[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" "8126f5fd5f8cba3786dffbfe2fe94f8a47a05e4b2a55e877568e60636d071230", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking fs-err v2.5.0
[INFO] [stderr]     Checking addr2line v0.14.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking sharded-slab v0.1.0
[INFO] [stderr]     Checking eyre v0.6.3
[INFO] [stderr]     Checking tracing-subscriber v0.2.15
[INFO] [stderr]     Checking backtrace v0.3.54
[INFO] [stderr]     Checking nix v0.19.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking libmount v0.1.15 (https://github.com/drahnr/libmount#43c86f1d)
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking color-spantrace v0.1.4
[INFO] [stderr]     Checking color-eyre v0.5.7
[INFO] [stderr]     Checking overlay-fs-gen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.17s
[INFO] running `Command { std: "docker" "inspect" "8126f5fd5f8cba3786dffbfe2fe94f8a47a05e4b2a55e877568e60636d071230", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8126f5fd5f8cba3786dffbfe2fe94f8a47a05e4b2a55e877568e60636d071230", kill_on_drop: false }`
[INFO] [stdout] 8126f5fd5f8cba3786dffbfe2fe94f8a47a05e4b2a55e877568e60636d071230