[INFO] cloning repository https://github.com/azdavis/try-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/azdavis/try-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazdavis%2Ftry-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazdavis%2Ftry-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 978907b7fb4f815f5bbd859552aba93795ecf90a
[INFO] checking azdavis/try-rust against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazdavis%2Ftry-rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/azdavis/try-rust on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-8/source/.cargo/config
[INFO] started tweaking git repo https://github.com/azdavis/try-rust
[INFO] finished tweaking git repo https://github.com/azdavis/try-rust
[INFO] tweaked toml for git repo https://github.com/azdavis/try-rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/azdavis/try-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87b4ef25c4128b3955632e4dddd482a18e955f783054bee61055ac558cb1dda1
[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" "87b4ef25c4128b3955632e4dddd482a18e955f783054bee61055ac558cb1dda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87b4ef25c4128b3955632e4dddd482a18e955f783054bee61055ac558cb1dda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87b4ef25c4128b3955632e4dddd482a18e955f783054bee61055ac558cb1dda1", kill_on_drop: false }`
[INFO] [stdout] 87b4ef25c4128b3955632e4dddd482a18e955f783054bee61055ac558cb1dda1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] 2fee974f66a205ad81de500ca3df14781e53649d5b6aa9d09883d9b0382a3a60
[INFO] running `Command { std: "docker" "start" "-a" "2fee974f66a205ad81de500ca3df14781e53649d5b6aa9d09883d9b0382a3a60", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stderr]     Checking communicator v0.1.0 (/opt/rustwide/workdir/communicator)
[INFO] [stderr]     Checking rust-from-c v0.1.0 (/opt/rustwide/workdir/rust-from-c)
[INFO] [stderr]     Checking macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stderr]     Checking sandbox v0.1.0 (/opt/rustwide/workdir/sandbox)
[INFO] [stderr]     Checking web-server v0.1.0 (/opt/rustwide/workdir/web-server)
[INFO] [stderr]    Compiling c-from-rust v0.1.0 (/opt/rustwide/workdir/c-from-rust)
[INFO] [stdout] warning: field is never read: `foo`
[INFO] [stdout]   --> macros/src/main.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   foo: bool,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `heh`
[INFO] [stdout]   --> macros/src/main.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   heh: i32,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lel`
[INFO] [stdout]   --> macros/src/main.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 |   lel: Vec<String>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `foo`
[INFO] [stdout]   --> macros/src/main.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   foo: bool,
[INFO] [stdout]    |   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `heh`
[INFO] [stdout]   --> macros/src/main.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   heh: i32,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lel`
[INFO] [stdout]   --> macros/src/main.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 |   lel: Vec<String>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking guessing-game v0.1.0 (/opt/rustwide/workdir/guessing-game)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.87s
[INFO] running `Command { std: "docker" "inspect" "2fee974f66a205ad81de500ca3df14781e53649d5b6aa9d09883d9b0382a3a60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fee974f66a205ad81de500ca3df14781e53649d5b6aa9d09883d9b0382a3a60", kill_on_drop: false }`
[INFO] [stdout] 2fee974f66a205ad81de500ca3df14781e53649d5b6aa9d09883d9b0382a3a60