[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] checking Rui-code/minigrep against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRui-code%2Fminigrep" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Rui-code/minigrep on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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-12/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] d2a2722c189e6e44eb308118e0bc42543cbaf34010e2062f1f48c21171e10679
[INFO] running `Command { std: "docker" "start" "-a" "d2a2722c189e6e44eb308118e0bc42543cbaf34010e2062f1f48c21171e10679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2a2722c189e6e44eb308118e0bc42543cbaf34010e2062f1f48c21171e10679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2a2722c189e6e44eb308118e0bc42543cbaf34010e2062f1f48c21171e10679", kill_on_drop: false }`
[INFO] [stdout] d2a2722c189e6e44eb308118e0bc42543cbaf34010e2062f1f48c21171e10679
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19d4d46c64e8466b75d7a049f30e3d5e4074fcd6597b84b31d9de0054ef6f316
[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" "19d4d46c64e8466b75d7a049f30e3d5e4074fcd6597b84b31d9de0054ef6f316", kill_on_drop: false }`
[INFO] [stderr]     Checking 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] 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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "19d4d46c64e8466b75d7a049f30e3d5e4074fcd6597b84b31d9de0054ef6f316", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19d4d46c64e8466b75d7a049f30e3d5e4074fcd6597b84b31d9de0054ef6f316", kill_on_drop: false }`
[INFO] [stdout] 19d4d46c64e8466b75d7a049f30e3d5e4074fcd6597b84b31d9de0054ef6f316