[INFO] cloning repository https://github.com/Rui-code/minigrep
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Rui-code/minigrep" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRui-code%2Fminigrep", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRui-code%2Fminigrep'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 870255dc533bf16dd6450ca844818ad6bb1dcb11
[INFO] testing Rui-code/minigrep against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRui-code%2Fminigrep" "/workspace/builds/worker-39/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-39/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Rui-code/minigrep on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Rui-code/minigrep
[INFO] finished tweaking git repo https://github.com/Rui-code/minigrep
[INFO] tweaked toml for git repo https://github.com/Rui-code/minigrep written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate git repo https://github.com/Rui-code/minigrep already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16535df94ce01bd4102b92145c091c6a1beab0e4c183d0a3c8eec64932c23d7f
[INFO] running `Command { std: "docker" "start" "-a" "16535df94ce01bd4102b92145c091c6a1beab0e4c183d0a3c8eec64932c23d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16535df94ce01bd4102b92145c091c6a1beab0e4c183d0a3c8eec64932c23d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16535df94ce01bd4102b92145c091c6a1beab0e4c183d0a3c8eec64932c23d7f", kill_on_drop: false }`
[INFO] [stdout] 16535df94ce01bd4102b92145c091c6a1beab0e4c183d0a3c8eec64932c23d7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba4720e920fc018b076e9e995d09688ed92ca28549893c9813ed891e8180cad1
[INFO] running `Command { std: "docker" "start" "-a" "ba4720e920fc018b076e9e995d09688ed92ca28549893c9813ed891e8180cad1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected `,` in pattern
[INFO] [stdout]   --> src/lib.rs:16:22
[INFO] [stdout]    |
[INFO] [stdout] 16 |             Some(arg),
[INFO] [stdout]    |                      ^
[INFO] [stdout]    |
[INFO] [stdout] help: try adding parentheses to match on a tuple...
[INFO] [stdout]    |
[INFO] [stdout] 16 ~             (Some(arg),
[INFO] [stdout] 17 ~             None) => return Err("Didn't get a query string"),
[INFO] [stdout]    |
[INFO] [stdout] help: ...or a vertical bar to match on multiple alternatives
[INFO] [stdout]    |
[INFO] [stdout] 16 ~             Some(arg) |
[INFO] [stdout] 17 ~             None => return Err("Didn't get a query string"),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/lib.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |           let query = match args.next() {
[INFO] [stdout]    |  _____________________-
[INFO] [stdout] 16 | |             Some(arg),
[INFO] [stdout] 17 | |             None => return Err("Didn't get a query string"),
[INFO] [stdout] 18 | |         };
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 19 | 
[INFO] [stdout] 20 | /         let filename = match args.next() {
[INFO] [stdout] 21 | |             Some(arg) => arg,
[INFO] [stdout] 22 | |             None => return Err("Didn't get a file name"),    
[INFO] [stdout] 23 | |         };
[INFO] [stdout]    | |__________^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `minigrep` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "ba4720e920fc018b076e9e995d09688ed92ca28549893c9813ed891e8180cad1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba4720e920fc018b076e9e995d09688ed92ca28549893c9813ed891e8180cad1", kill_on_drop: false }`
[INFO] [stdout] ba4720e920fc018b076e9e995d09688ed92ca28549893c9813ed891e8180cad1