[INFO] cloning repository https://github.com/schneems/basic_rust_lol_cnb_buildpack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/schneems/basic_rust_lol_cnb_buildpack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschneems%2Fbasic_rust_lol_cnb_buildpack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschneems%2Fbasic_rust_lol_cnb_buildpack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f4585b049a3687ea5af4a07ad682dfb6978d584
[INFO] checking schneems/basic_rust_lol_cnb_buildpack against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschneems%2Fbasic_rust_lol_cnb_buildpack" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack
[INFO] finished tweaking git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack
[INFO] tweaked toml for git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror-impl v1.0.28
[INFO] [stderr]   Downloaded thiserror v1.0.28
[INFO] [stderr]   Downloaded libcnb v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a9255f401a302a4d038a4d9ff6dfe230dea61219d77950fccc380cdb241cb4d
[INFO] running `Command { std: "docker" "start" "-a" "6a9255f401a302a4d038a4d9ff6dfe230dea61219d77950fccc380cdb241cb4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a9255f401a302a4d038a4d9ff6dfe230dea61219d77950fccc380cdb241cb4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a9255f401a302a4d038a4d9ff6dfe230dea61219d77950fccc380cdb241cb4d", kill_on_drop: false }`
[INFO] [stdout] 6a9255f401a302a4d038a4d9ff6dfe230dea61219d77950fccc380cdb241cb4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7956b1468f83a73395204bbbc4213f24abfde6c07f6bf60f0a6a54f5df30a381
[INFO] running `Command { std: "docker" "start" "-a" "7956b1468f83a73395204bbbc4213f24abfde6c07f6bf60f0a6a54f5df30a381", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling thiserror-impl v1.0.28
[INFO] [stderr]     Checking thiserror v1.0.28
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking libcnb v0.2.0
[INFO] [stderr]     Checking example-01-basics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ProcessTypeError`
[INFO] [stdout]  --> src/main.rs:2:45
[INFO] [stdout]   |
[INFO] [stdout] 2 | use libcnb::data::launch::{Launch, Process, ProcessTypeError};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ProcessTypeError`
[INFO] [stdout]  --> src/main.rs:2:45
[INFO] [stdout]   |
[INFO] [stdout] 2 | use libcnb::data::launch::{Launch, Process, ProcessTypeError};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.42s
[INFO] running `Command { std: "docker" "inspect" "7956b1468f83a73395204bbbc4213f24abfde6c07f6bf60f0a6a54f5df30a381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7956b1468f83a73395204bbbc4213f24abfde6c07f6bf60f0a6a54f5df30a381", kill_on_drop: false }`
[INFO] [stdout] 7956b1468f83a73395204bbbc4213f24abfde6c07f6bf60f0a6a54f5df30a381
[INFO] checking schneems/basic_rust_lol_cnb_buildpack against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschneems%2Fbasic_rust_lol_cnb_buildpack" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack
[INFO] finished tweaking git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack
[INFO] tweaked toml for git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/schneems/basic_rust_lol_cnb_buildpack 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcf64dd1dbb19f41bae30835547c2e8eb7d385822eb8e7f61563a387ad0218b8
[INFO] running `Command { std: "docker" "start" "-a" "dcf64dd1dbb19f41bae30835547c2e8eb7d385822eb8e7f61563a387ad0218b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcf64dd1dbb19f41bae30835547c2e8eb7d385822eb8e7f61563a387ad0218b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcf64dd1dbb19f41bae30835547c2e8eb7d385822eb8e7f61563a387ad0218b8", kill_on_drop: false }`
[INFO] [stdout] dcf64dd1dbb19f41bae30835547c2e8eb7d385822eb8e7f61563a387ad0218b8
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3205f9ca3017e931d4264aaee29f6762fc7b62367d2f6243e7986c207fbc3db2
[INFO] running `Command { std: "docker" "start" "-a" "3205f9ca3017e931d4264aaee29f6762fc7b62367d2f6243e7986c207fbc3db2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling thiserror-impl v1.0.28
[INFO] [stderr]     Checking thiserror v1.0.28
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking libcnb v0.2.0
[INFO] [stderr]     Checking example-01-basics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ProcessTypeError`
[INFO] [stdout]  --> src/main.rs:2:45
[INFO] [stdout]   |
[INFO] [stdout] 2 | use libcnb::data::launch::{Launch, Process, ProcessTypeError};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ProcessTypeError`
[INFO] [stdout]  --> src/main.rs:2:45
[INFO] [stdout]   |
[INFO] [stdout] 2 | use libcnb::data::launch::{Launch, Process, ProcessTypeError};
[INFO] [stdout]   |                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.80s
[INFO] running `Command { std: "docker" "inspect" "3205f9ca3017e931d4264aaee29f6762fc7b62367d2f6243e7986c207fbc3db2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3205f9ca3017e931d4264aaee29f6762fc7b62367d2f6243e7986c207fbc3db2", kill_on_drop: false }`
[INFO] [stdout] 3205f9ca3017e931d4264aaee29f6762fc7b62367d2f6243e7986c207fbc3db2