[INFO] cloning repository https://github.com/Malax/libcnb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Malax/libcnb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMalax%2Flibcnb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMalax%2Flibcnb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1426fa17d7af58418f3a07983e2fd2c5f5506d5d
[INFO] checking Malax/libcnb against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMalax%2Flibcnb" "/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/Malax/libcnb on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Malax/libcnb
[INFO] finished tweaking git repo https://github.com/Malax/libcnb
[INFO] tweaked toml for git repo https://github.com/Malax/libcnb written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9f3147d60d08365c13273920e697e49462053821c895314b968ce2ee2c55bad
[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" "e9f3147d60d08365c13273920e697e49462053821c895314b968ce2ee2c55bad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9f3147d60d08365c13273920e697e49462053821c895314b968ce2ee2c55bad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9f3147d60d08365c13273920e697e49462053821c895314b968ce2ee2c55bad", kill_on_drop: false }`
[INFO] [stdout] e9f3147d60d08365c13273920e697e49462053821c895314b968ce2ee2c55bad
[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=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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--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] 659471b2966613fc0b12e1fea8a7efd01cae42e44c42c44df6d48d25532d9078
[INFO] running `Command { std: "docker" "start" "-a" "659471b2966613fc0b12e1fea8a7efd01cae42e44c42c44df6d48d25532d9078", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling crc32fast v1.2.2
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking tar v0.4.37
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.22.1
[INFO] [stderr]     Checking rustls v0.20.2
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking fancy-regex v0.7.1
[INFO] [stderr]     Checking libcnb-proc-macros v0.1.0 (/opt/rustwide/workdir/libcnb-proc-macros)
[INFO] [stderr]     Checking ureq v2.3.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_test v1.0.130
[INFO] [stderr]     Checking libcnb-data v0.3.0 (/opt/rustwide/workdir/libcnb-data)
[INFO] [stdout] warning: field is never read: `group`
[INFO] [stdout]   --> libcnb-data/src/buildpack/mod.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     group: Vec<Group>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking libcnb v0.3.0 (/opt/rustwide/workdir/libcnb)
[INFO] [stderr]     Checking example-02-ruby-sample v0.1.0 (/opt/rustwide/workdir/examples/example-02-ruby-sample)
[INFO] [stderr]     Checking example-01-basics v0.1.0 (/opt/rustwide/workdir/examples/example-01-basics)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 31s
[INFO] running `Command { std: "docker" "inspect" "659471b2966613fc0b12e1fea8a7efd01cae42e44c42c44df6d48d25532d9078", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "659471b2966613fc0b12e1fea8a7efd01cae42e44c42c44df6d48d25532d9078", kill_on_drop: false }`
[INFO] [stdout] 659471b2966613fc0b12e1fea8a7efd01cae42e44c42c44df6d48d25532d9078