[INFO] cloning repository https://github.com/heroku-buildpacks/cache_diff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/heroku-buildpacks/cache_diff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheroku-buildpacks%2Fcache_diff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheroku-buildpacks%2Fcache_diff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5019d10f292b4db00a799928eead0fbe22780d4d
[INFO] checking heroku-buildpacks/cache_diff against try#2c4819a380dbddb1f2a0f4405a49fb6ed90983ae for pr-152996
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheroku-buildpacks%2Fcache_diff" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/heroku-buildpacks/cache_diff
[INFO] finished tweaking git repo https://github.com/heroku-buildpacks/cache_diff
[INFO] tweaked toml for git repo https://github.com/heroku-buildpacks/cache_diff written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/heroku-buildpacks/cache_diff on toolchain 2c4819a380dbddb1f2a0f4405a49fb6ed90983ae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/heroku-buildpacks/cache_diff already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded target-triple v1.0.0
[INFO] [stderr]   Downloaded fun_run v0.6.0
[INFO] [stderr]   Downloaded trybuild v1.0.114
[INFO] [stderr]   Downloaded bullet_stream v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b38b7131c1aed469b491cceea20633e83efca169e5f3b47d3a16ba4c8fb06171
[INFO] running `Command { std: "docker" "start" "-a" "b38b7131c1aed469b491cceea20633e83efca169e5f3b47d3a16ba4c8fb06171", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b38b7131c1aed469b491cceea20633e83efca169e5f3b47d3a16ba4c8fb06171", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b38b7131c1aed469b491cceea20633e83efca169e5f3b47d3a16ba4c8fb06171", kill_on_drop: false }`
[INFO] [stdout] b38b7131c1aed469b491cceea20633e83efca169e5f3b47d3a16ba4c8fb06171
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16f7b53d8d7b52390269e66865f61bc617a0dc22e048c1e7386ec6a4cf08122f
[INFO] running `Command { std: "docker" "start" "-a" "16f7b53d8d7b52390269e66865f61bc617a0dc22e048c1e7386ec6a4cf08122f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]     Checking winnow v0.7.14
[INFO] [stderr]     Checking unicode-ident v1.0.13
[INFO] [stderr]     Checking toml_writer v1.0.4
[INFO] [stderr]     Checking toml_datetime v0.7.3
[INFO] [stderr]     Checking serde_spanned v1.0.3
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking yansi v1.0.1
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking pretty_assertions v1.4.1
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]     Checking syn v2.0.87
[INFO] [stderr]     Checking toml_parser v1.0.4
[INFO] [stderr]     Checking toml v0.9.8
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling strum v0.27.2
[INFO] [stderr]    Compiling cache_diff_derive v1.1.0 (/opt/rustwide/workdir/cache_diff_derive)
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking cache_diff v1.1.0 (/opt/rustwide/workdir/cache_diff)
[INFO] [stderr]     Checking trybuild v1.0.114
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.15s
[INFO] running `Command { std: "docker" "inspect" "16f7b53d8d7b52390269e66865f61bc617a0dc22e048c1e7386ec6a4cf08122f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16f7b53d8d7b52390269e66865f61bc617a0dc22e048c1e7386ec6a4cf08122f", kill_on_drop: false }`
[INFO] [stdout] 16f7b53d8d7b52390269e66865f61bc617a0dc22e048c1e7386ec6a4cf08122f