[INFO] cloning repository https://github.com/ktalmadge/Rust-Tracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ktalmadge/Rust-Tracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fktalmadge%2FRust-Tracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fktalmadge%2FRust-Tracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a50d5dd888aa169b8a4a10327eca453a697cbb98
[INFO] checking ktalmadge/Rust-Tracer against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fktalmadge%2FRust-Tracer" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ktalmadge/Rust-Tracer on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ktalmadge/Rust-Tracer
[INFO] finished tweaking git repo https://github.com/ktalmadge/Rust-Tracer
[INFO] tweaked toml for git repo https://github.com/ktalmadge/Rust-Tracer written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ktalmadge/Rust-Tracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.3
[INFO] [stderr]   Downloaded either v1.2.0
[INFO] [stderr]   Downloaded serde_derive_internals v0.16.0
[INFO] [stderr]   Downloaded serde_derive v1.0.15
[INFO] [stderr]   Downloaded futures v0.1.16
[INFO] [stderr]   Downloaded serde v1.0.15
[INFO] [stderr]   Downloaded image v0.16.0
[INFO] [stderr]   Downloaded png v0.10.0
[INFO] [stderr]   Downloaded libc v0.2.31
[INFO] [stderr]   Downloaded inflate v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", 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] 5659f9d6eb4ce70cd5508c8379acf150eafa31d16592bcbeac43779eb7771b07
[INFO] running `Command { std: "docker" "start" "-a" "5659f9d6eb4ce70cd5508c8379acf150eafa31d16592bcbeac43779eb7771b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5659f9d6eb4ce70cd5508c8379acf150eafa31d16592bcbeac43779eb7771b07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5659f9d6eb4ce70cd5508c8379acf150eafa31d16592bcbeac43779eb7771b07", kill_on_drop: false }`
[INFO] [stdout] 5659f9d6eb4ce70cd5508c8379acf150eafa31d16592bcbeac43779eb7771b07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a8b912698c57eaa35f0275b101ef3da9f56d1308d29348e55181116cfe1d810
[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" "7a8b912698c57eaa35f0275b101ef3da9f56d1308d29348e55181116cfe1d810", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking deflate v0.7.17
[INFO] [stderr]     Checking inflate v0.3.2
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]    Compiling serde_derive_internals v0.16.0
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking serde_json v1.0.3
[INFO] [stderr]     Checking rayon-core v1.2.1
[INFO] [stderr]     Checking cgmath v0.15.0
[INFO] [stderr]    Compiling serde_derive v1.0.15
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]     Checking png v0.10.0
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.16.0
[INFO] [stderr]     Checking raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.25s
[INFO] running `Command { std: "docker" "inspect" "7a8b912698c57eaa35f0275b101ef3da9f56d1308d29348e55181116cfe1d810", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a8b912698c57eaa35f0275b101ef3da9f56d1308d29348e55181116cfe1d810", kill_on_drop: false }`
[INFO] [stdout] 7a8b912698c57eaa35f0275b101ef3da9f56d1308d29348e55181116cfe1d810