[INFO] cloning repository https://github.com/yuhangwang/copy_files-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yuhangwang/copy_files-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuhangwang%2Fcopy_files-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuhangwang%2Fcopy_files-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 28fc7a1e5d719ded63b50fc519cc32df2d7e447e
[INFO] testing yuhangwang/copy_files-rs against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyuhangwang%2Fcopy_files-rs" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yuhangwang/copy_files-rs on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yuhangwang/copy_files-rs
[INFO] finished tweaking git repo https://github.com/yuhangwang/copy_files-rs
[INFO] tweaked toml for git repo https://github.com/yuhangwang/copy_files-rs written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/yuhangwang/copy_files-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90bbdf95358c7eb36d746c293cbd36365f71f5486943340c0237a783f4d6e7b7
[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" "90bbdf95358c7eb36d746c293cbd36365f71f5486943340c0237a783f4d6e7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90bbdf95358c7eb36d746c293cbd36365f71f5486943340c0237a783f4d6e7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90bbdf95358c7eb36d746c293cbd36365f71f5486943340c0237a783f4d6e7b7", kill_on_drop: false }`
[INFO] [stdout] 90bbdf95358c7eb36d746c293cbd36365f71f5486943340c0237a783f4d6e7b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1fa59def1d73d7a47b8be19a1f32ed9959f3f605a82484f2620b10f680fab1cd
[INFO] running `Command { std: "docker" "start" "-a" "1fa59def1d73d7a47b8be19a1f32ed9959f3f605a82484f2620b10f680fab1cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling copy_files v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `serde_json`
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate serde_json;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `copy_files` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1fa59def1d73d7a47b8be19a1f32ed9959f3f605a82484f2620b10f680fab1cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fa59def1d73d7a47b8be19a1f32ed9959f3f605a82484f2620b10f680fab1cd", kill_on_drop: false }`
[INFO] [stdout] 1fa59def1d73d7a47b8be19a1f32ed9959f3f605a82484f2620b10f680fab1cd