[INFO] cloning repository https://github.com/hone/rust-buildpack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hone/rust-buildpack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhone%2Frust-buildpack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhone%2Frust-buildpack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e64610c680270db0651773e53dcfad73c851ed4
[INFO] testing hone/rust-buildpack against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhone%2Frust-buildpack" "/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/hone/rust-buildpack on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hone/rust-buildpack
[INFO] finished tweaking git repo https://github.com/hone/rust-buildpack
[INFO] tweaked toml for git repo https://github.com/hone/rust-buildpack written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/hone/rust-buildpack already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65ce1344933b7931113e4ae0ea1b34ba9e22c7e6363aa696528486cd52013928
[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" "65ce1344933b7931113e4ae0ea1b34ba9e22c7e6363aa696528486cd52013928", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65ce1344933b7931113e4ae0ea1b34ba9e22c7e6363aa696528486cd52013928", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65ce1344933b7931113e4ae0ea1b34ba9e22c7e6363aa696528486cd52013928", kill_on_drop: false }`
[INFO] [stdout] 65ce1344933b7931113e4ae0ea1b34ba9e22c7e6363aa696528486cd52013928
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a69b06ebbcd6aa675e526a2220cde6a89385bbb5f6fea6916a458475c571759
[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" "0a69b06ebbcd6aa675e526a2220cde6a89385bbb5f6fea6916a458475c571759", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling thiserror v1.0.22
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling toml v0.5.7
[INFO] [stderr]    Compiling libcnb-rs v0.1.0 (/opt/rustwide/workdir/libcnb-rs)
[INFO] [stdout] warning: field is never read: `buildpack_plan_path`
[INFO] [stdout]  --> libcnb-rs/src/build.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     buildpack_plan_path: PathBuf,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `layers_path`
[INFO] [stdout]   --> libcnb-rs/src/build.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     layers_path: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustup-buildpack v0.1.0 (/opt/rustwide/workdir/buildpacks/rustup-buildpack)
[INFO] [stderr]    Compiling cargo-buildpack v0.1.0 (/opt/rustwide/workdir/buildpacks/cargo-buildpack)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> buildpacks/rustup-buildpack/src/bin/builder.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Build::from_args(std::env::args());
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.42s
[INFO] running `Command { std: "docker" "inspect" "0a69b06ebbcd6aa675e526a2220cde6a89385bbb5f6fea6916a458475c571759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a69b06ebbcd6aa675e526a2220cde6a89385bbb5f6fea6916a458475c571759", kill_on_drop: false }`
[INFO] [stdout] 0a69b06ebbcd6aa675e526a2220cde6a89385bbb5f6fea6916a458475c571759
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ecaccb3896c404ac7454763192dc750a4a8046017ca2bf1a93b557d19c79ae8
[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" "4ecaccb3896c404ac7454763192dc750a4a8046017ca2bf1a93b557d19c79ae8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libcnb-rs v0.1.0 (/opt/rustwide/workdir/libcnb-rs)
[INFO] [stderr]    Compiling rustup-buildpack v0.1.0 (/opt/rustwide/workdir/buildpacks/rustup-buildpack)
[INFO] [stderr]    Compiling cargo-buildpack v0.1.0 (/opt/rustwide/workdir/buildpacks/cargo-buildpack)
[INFO] [stdout] warning: field is never read: `buildpack_plan_path`
[INFO] [stdout]  --> libcnb-rs/src/build.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     buildpack_plan_path: PathBuf,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `layers_path`
[INFO] [stdout]   --> libcnb-rs/src/build.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     layers_path: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> buildpacks/rustup-buildpack/src/bin/builder.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Build::from_args(std::env::args());
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buildpack_plan_path`
[INFO] [stdout]  --> libcnb-rs/src/build.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     buildpack_plan_path: PathBuf,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `layers_path`
[INFO] [stdout]   --> libcnb-rs/src/build.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     layers_path: PathBuf,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "4ecaccb3896c404ac7454763192dc750a4a8046017ca2bf1a93b557d19c79ae8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ecaccb3896c404ac7454763192dc750a4a8046017ca2bf1a93b557d19c79ae8", kill_on_drop: false }`
[INFO] [stdout] 4ecaccb3896c404ac7454763192dc750a4a8046017ca2bf1a93b557d19c79ae8
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ac068d4758ffea59b62b016833bd4a6e7ffffa6096cf212fb77ac94d1efad4ff
[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" "ac068d4758ffea59b62b016833bd4a6e7ffffa6096cf212fb77ac94d1efad4ff", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `buildpack_plan_path`
[INFO] [stderr]  --> libcnb-rs/src/build.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     buildpack_plan_path: PathBuf,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `layers_path`
[INFO] [stderr]   --> libcnb-rs/src/build.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     layers_path: PathBuf,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `buildpack_plan_path`
[INFO] [stderr]  --> libcnb-rs/src/build.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     buildpack_plan_path: PathBuf,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `layers_path`
[INFO] [stderr]   --> libcnb-rs/src/build.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     layers_path: PathBuf,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]  --> buildpacks/rustup-buildpack/src/bin/builder.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Build::from_args(std::env::args());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cargo_detect-67930cc8bba1bc68)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/libcnb_rs-d3793ad0bcb83977)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustup_build-b473854b56657500)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustup_detect-ed60801c768c1c98)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests libcnb-rs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ac068d4758ffea59b62b016833bd4a6e7ffffa6096cf212fb77ac94d1efad4ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac068d4758ffea59b62b016833bd4a6e7ffffa6096cf212fb77ac94d1efad4ff", kill_on_drop: false }`
[INFO] [stdout] ac068d4758ffea59b62b016833bd4a6e7ffffa6096cf212fb77ac94d1efad4ff