[INFO] cloning repository https://github.com/ammarshahin/LearningRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ammarshahin/LearningRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fammarshahin%2FLearningRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fammarshahin%2FLearningRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 08cccee4afde4c28c168eacf5584977c3aa1cfe6
[INFO] checking ammarshahin/LearningRust against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fammarshahin%2FLearningRust" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ammarshahin/LearningRust on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ammarshahin/LearningRust
[INFO] finished tweaking git repo https://github.com/ammarshahin/LearningRust
[INFO] tweaked toml for git repo https://github.com/ammarshahin/LearningRust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ammarshahin/LearningRust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "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] dfe0a745415ddf8e609ecece97103220425e1c85993c444c59bdd3109b451340
[INFO] running `Command { std: "docker" "start" "-a" "dfe0a745415ddf8e609ecece97103220425e1c85993c444c59bdd3109b451340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfe0a745415ddf8e609ecece97103220425e1c85993c444c59bdd3109b451340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfe0a745415ddf8e609ecece97103220425e1c85993c444c59bdd3109b451340", kill_on_drop: false }`
[INFO] [stdout] dfe0a745415ddf8e609ecece97103220425e1c85993c444c59bdd3109b451340
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08c83f6b7bbff33ac3af499ee08c84d562bc7a5468e3143f1f18fd420ebdf9e4
[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" "08c83f6b7bbff33ac3af499ee08c84d562bc7a5468e3143f1f18fd420ebdf9e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking learning_rust_repo v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `http::Method`
[INFO] [stdout]  --> src/learn_rust_by_building_real_applications/second_app.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use http::Method;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `http::Request`
[INFO] [stdout]  --> src/learn_rust_by_building_real_applications/second_app.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use http::Request;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Method`
[INFO] [stdout]  --> src/learn_rust_by_building_real_applications/second_app/http/method.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Method {
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Request`
[INFO] [stdout]  --> src/learn_rust_by_building_real_applications/second_app/http/request.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Request {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `http::Method`
[INFO] [stdout]  --> src/learn_rust_by_building_real_applications/second_app.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use http::Method;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `http::Request`
[INFO] [stdout]  --> src/learn_rust_by_building_real_applications/second_app.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use http::Request;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Method`
[INFO] [stdout]  --> src/learn_rust_by_building_real_applications/second_app/http/method.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Method {
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Request`
[INFO] [stdout]  --> src/learn_rust_by_building_real_applications/second_app/http/request.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Request {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.91s
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "08c83f6b7bbff33ac3af499ee08c84d562bc7a5468e3143f1f18fd420ebdf9e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08c83f6b7bbff33ac3af499ee08c84d562bc7a5468e3143f1f18fd420ebdf9e4", kill_on_drop: false }`
[INFO] [stdout] 08c83f6b7bbff33ac3af499ee08c84d562bc7a5468e3143f1f18fd420ebdf9e4