[INFO] fetching crate skidscan 0.1.0...
[INFO] testing skidscan-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate skidscan 0.1.0 into /workspace/builds/worker-61/source
[INFO] validating manifest of crates.io crate skidscan 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate skidscan 0.1.0
[INFO] finished tweaking crates.io crate skidscan 0.1.0
[INFO] tweaked toml for crates.io crate skidscan 0.1.0 written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ae809816f1d2a63c20d86870a4594faf0a94553ee5d7fc5c98d1ad58ae7b137
[INFO] running `Command { std: "docker" "start" "-a" "9ae809816f1d2a63c20d86870a4594faf0a94553ee5d7fc5c98d1ad58ae7b137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ae809816f1d2a63c20d86870a4594faf0a94553ee5d7fc5c98d1ad58ae7b137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ae809816f1d2a63c20d86870a4594faf0a94553ee5d7fc5c98d1ad58ae7b137", kill_on_drop: false }`
[INFO] [stdout] 9ae809816f1d2a63c20d86870a4594faf0a94553ee5d7fc5c98d1ad58ae7b137
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9ae3089846350c2a77509eb262c420139f008ee4b670bf3125d74fcd084bb5d
[INFO] running `Command { std: "docker" "start" "-a" "b9ae3089846350c2a77509eb262c420139f008ee4b670bf3125d74fcd084bb5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling proc-macro-crate v1.0.0
[INFO] [stderr]    Compiling skidscan-macros v0.1.2
[INFO] [stderr]    Compiling skidscan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `libc`
[INFO] [stdout]  --> src/modulescan/linux.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use libc::{dl_iterate_phdr, dl_phdr_info, PT_LOAD};
[INFO] [stdout]   |     ^^^^ use of undeclared crate or module `libc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `libc`
[INFO] [stdout]   --> src/modulescan/linux.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 | type Phdr = libc::Elf64_Phdr;
[INFO] [stdout]    |             ^^^^ use of undeclared crate or module `libc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `skidscan` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "b9ae3089846350c2a77509eb262c420139f008ee4b670bf3125d74fcd084bb5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9ae3089846350c2a77509eb262c420139f008ee4b670bf3125d74fcd084bb5d", kill_on_drop: false }`
[INFO] [stdout] b9ae3089846350c2a77509eb262c420139f008ee4b670bf3125d74fcd084bb5d