[INFO] cloning repository https://github.com/kermit4/first_16_hours_of_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kermit4/first_16_hours_of_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkermit4%2Ffirst_16_hours_of_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkermit4%2Ffirst_16_hours_of_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c46ddffdaad3876aae75a4432871b7e25109904
[INFO] checking kermit4/first_16_hours_of_rust against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkermit4%2Ffirst_16_hours_of_rust" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kermit4/first_16_hours_of_rust on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kermit4/first_16_hours_of_rust
[INFO] finished tweaking git repo https://github.com/kermit4/first_16_hours_of_rust
[INFO] tweaked toml for git repo https://github.com/kermit4/first_16_hours_of_rust written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/kermit4/first_16_hours_of_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abfca1034cc5549de15976de404665d0d356564084edc3d9b5203457258f8046
[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" "abfca1034cc5549de15976de404665d0d356564084edc3d9b5203457258f8046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abfca1034cc5549de15976de404665d0d356564084edc3d9b5203457258f8046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abfca1034cc5549de15976de404665d0d356564084edc3d9b5203457258f8046", kill_on_drop: false }`
[INFO] [stdout] abfca1034cc5549de15976de404665d0d356564084edc3d9b5203457258f8046
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] fbf96edaf5bb304f4cd7c84862b5142d5f9d80327a39e6c0282a065a3c574ed9
[INFO] running `Command { std: "docker" "start" "-a" "fbf96edaf5bb304f4cd7c84862b5142d5f9d80327a39e6c0282a065a3c574ed9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]     Checking bincode v1.3.2
[INFO] [stderr]     Checking serde-big-array v0.3.1
[INFO] [stderr]     Checking udp_uploader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.03s
[INFO] running `Command { std: "docker" "inspect" "fbf96edaf5bb304f4cd7c84862b5142d5f9d80327a39e6c0282a065a3c574ed9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbf96edaf5bb304f4cd7c84862b5142d5f9d80327a39e6c0282a065a3c574ed9", kill_on_drop: false }`
[INFO] [stdout] fbf96edaf5bb304f4cd7c84862b5142d5f9d80327a39e6c0282a065a3c574ed9