[INFO] cloning repository https://github.com/0918nobita/forth-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0918nobita/forth-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0918nobita%2Fforth-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0918nobita%2Fforth-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 102c9faa5f6f3c825bfa3c5cf960458d8be853e7
[INFO] checking 0918nobita/forth-rs against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0918nobita%2Fforth-rs" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0918nobita/forth-rs
[INFO] finished tweaking git repo https://github.com/0918nobita/forth-rs
[INFO] tweaked toml for git repo https://github.com/0918nobita/forth-rs written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0918nobita/forth-rs on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0918nobita/forth-rs 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9516f7ed4b9acbc7abd6d333548d9238b198f1a6d5b5289f680eedfab10d2ea
[INFO] running `Command { std: "docker" "start" "-a" "f9516f7ed4b9acbc7abd6d333548d9238b198f1a6d5b5289f680eedfab10d2ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9516f7ed4b9acbc7abd6d333548d9238b198f1a6d5b5289f680eedfab10d2ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9516f7ed4b9acbc7abd6d333548d9238b198f1a6d5b5289f680eedfab10d2ea", kill_on_drop: false }`
[INFO] [stdout] f9516f7ed4b9acbc7abd6d333548d9238b198f1a6d5b5289f680eedfab10d2ea
[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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00fe35ad1bd2372bd41ea9b2361744e4300d66a6f58e46439c4865f9fdf1a355
[INFO] running `Command { std: "docker" "start" "-a" "00fe35ad1bd2372bd41ea9b2361744e4300d66a6f58e46439c4865f9fdf1a355", kill_on_drop: false }`
[INFO] [stderr]     Checking forth-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `mem` is never read
[INFO] [stdout]   --> src/context.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Context<'a> {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub mem: &'a mut Vec<u8>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:58:22
[INFO] [stdout]    |
[INFO] [stdout] 58 |             .map(|e| e.parse().ok().unwrap())
[INFO] [stdout]    |                      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `mem` is never read
[INFO] [stdout]   --> src/context.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Context<'a> {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub mem: &'a mut Vec<u8>,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/interp.rs:70:22
[INFO] [stdout]    |
[INFO] [stdout] 70 |             .map(|e| e.parse().ok().unwrap())
[INFO] [stdout]    |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:58:22
[INFO] [stdout]    |
[INFO] [stdout] 58 |             .map(|e| e.parse().ok().unwrap())
[INFO] [stdout]    |                      ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/interp.rs:70:22
[INFO] [stdout]    |
[INFO] [stdout] 70 |             .map(|e| e.parse().ok().unwrap())
[INFO] [stdout]    |                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `forth-rs` (bin "forth-rs") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `forth-rs` (bin "forth-rs" test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "00fe35ad1bd2372bd41ea9b2361744e4300d66a6f58e46439c4865f9fdf1a355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00fe35ad1bd2372bd41ea9b2361744e4300d66a6f58e46439c4865f9fdf1a355", kill_on_drop: false }`
[INFO] [stdout] 00fe35ad1bd2372bd41ea9b2361744e4300d66a6f58e46439c4865f9fdf1a355