[INFO] cloning repository https://github.com/chrisfrazier0/crabscript
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrisfrazier0/crabscript" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisfrazier0%2Fcrabscript", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisfrazier0%2Fcrabscript'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76e0ee3a322816e88ece8c1682f5143397ebfe86
[INFO] checking chrisfrazier0/crabscript 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%2Fchrisfrazier0%2Fcrabscript" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chrisfrazier0/crabscript
[INFO] finished tweaking git repo https://github.com/chrisfrazier0/crabscript
[INFO] tweaked toml for git repo https://github.com/chrisfrazier0/crabscript written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chrisfrazier0/crabscript 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/chrisfrazier0/crabscript 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f42152ae9be5dcea69d70ac188fb473f33defac8d20e51dd2e17158ecd4e1128
[INFO] running `Command { std: "docker" "start" "-a" "f42152ae9be5dcea69d70ac188fb473f33defac8d20e51dd2e17158ecd4e1128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f42152ae9be5dcea69d70ac188fb473f33defac8d20e51dd2e17158ecd4e1128", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f42152ae9be5dcea69d70ac188fb473f33defac8d20e51dd2e17158ecd4e1128", kill_on_drop: false }`
[INFO] [stdout] f42152ae9be5dcea69d70ac188fb473f33defac8d20e51dd2e17158ecd4e1128
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] da534afc7180e80c835b8efba008ef6ad0ccc175a83d8b0151d91d4c6dd4794b
[INFO] running `Command { std: "docker" "start" "-a" "da534afc7180e80c835b8efba008ef6ad0ccc175a83d8b0151d91d4c6dd4794b", kill_on_drop: false }`
[INFO] [stderr]     Checking whoami v1.6.0
[INFO] [stderr]     Checking interpreter v0.1.0 (/opt/rustwide/workdir/interpreter)
[INFO] [stdout] error: this type will no longer be must used: Result<object::Object, !>
[INFO] [stdout]    --> interpreter/src/evaluator/crab.rs:291:5
[INFO] [stdout]     |
[INFO] [stdout] 291 | /     parser
[INFO] [stdout] 292 | |       .parse()
[INFO] [stdout] 293 | |       .map_err(|errors| {
[INFO] [stdout] 294 | |         panic!(
[INFO] [stdout] ...   |
[INFO] [stdout] 298 | |       })
[INFO] [stdout] 299 | |       .map(|program| crab.eval(&program, env))
[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<ast::Node, !>
[INFO] [stdout]    --> interpreter/src/evaluator/crab.rs:291:5
[INFO] [stdout]     |
[INFO] [stdout] 291 | /     parser
[INFO] [stdout] 292 | |       .parse()
[INFO] [stdout] 293 | |       .map_err(|errors| {
[INFO] [stdout] 294 | |         panic!(
[INFO] [stdout] ...   |
[INFO] [stdout] 298 | |       })
[INFO] [stdout]     | |________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `interpreter` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "da534afc7180e80c835b8efba008ef6ad0ccc175a83d8b0151d91d4c6dd4794b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da534afc7180e80c835b8efba008ef6ad0ccc175a83d8b0151d91d4c6dd4794b", kill_on_drop: false }`
[INFO] [stdout] da534afc7180e80c835b8efba008ef6ad0ccc175a83d8b0151d91d4c6dd4794b