[INFO] cloning repository https://github.com/RDJ2000/Burrow-DB
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RDJ2000/Burrow-DB" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRDJ2000%2FBurrow-DB", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRDJ2000%2FBurrow-DB'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] afc1b7be71aff43fa0948ef0dc913ebf6c25ef7a
[INFO] checking RDJ2000/Burrow-DB against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRDJ2000%2FBurrow-DB" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
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[INFO] started tweaking git repo https://github.com/RDJ2000/Burrow-DB
[INFO] finished tweaking git repo https://github.com/RDJ2000/Burrow-DB
[INFO] tweaked toml for git repo https://github.com/RDJ2000/Burrow-DB written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/RDJ2000/Burrow-DB on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/RDJ2000/Burrow-DB already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78a2ed70f216bfc1576cc7107693b3d84406be0701f661bffcf37968b604504d
[INFO] running `Command { std: "docker" "start" "-a" "78a2ed70f216bfc1576cc7107693b3d84406be0701f661bffcf37968b604504d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78a2ed70f216bfc1576cc7107693b3d84406be0701f661bffcf37968b604504d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78a2ed70f216bfc1576cc7107693b3d84406be0701f661bffcf37968b604504d", kill_on_drop: false }`
[INFO] [stdout] 78a2ed70f216bfc1576cc7107693b3d84406be0701f661bffcf37968b604504d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab1e2add202b33e6aa7c0b5737953f33561af9c1bd34584f233a7fd51b912387
[INFO] running `Command { std: "docker" "start" "-a" "ab1e2add202b33e6aa7c0b5737953f33561af9c1bd34584f233a7fd51b912387", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling syn v2.0.107
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]     Checking tempfile v3.23.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking flatbuffers v2.1.2
[INFO] [stderr]     Checking burrow_db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:23:39
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn get(&self, key: &String)-> Option<&String>{
[INFO] [stdout]    |            ---                        ^^^^^^^^^^^^^^^ expected `Option<&String>`, found `()`
[INFO] [stdout]    |            |
[INFO] [stdout]    |            implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 24 |         self.data.get(key);
[INFO] [stdout]    |                           - help: remove this semicolon to return this value
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Option<&String>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `burrow_db` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:23:39
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn get(&self, key: &String)-> Option<&String>{
[INFO] [stdout]    |            ---                        ^^^^^^^^^^^^^^^ expected `Option<&String>`, found `()`
[INFO] [stdout]    |            |
[INFO] [stdout]    |            implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 24 |         self.data.get(key);
[INFO] [stdout]    |                           - help: remove this semicolon to return this value
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected enum `Option<&String>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `burrow_db` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "ab1e2add202b33e6aa7c0b5737953f33561af9c1bd34584f233a7fd51b912387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab1e2add202b33e6aa7c0b5737953f33561af9c1bd34584f233a7fd51b912387", kill_on_drop: false }`
[INFO] [stdout] ab1e2add202b33e6aa7c0b5737953f33561af9c1bd34584f233a7fd51b912387