[INFO] cloning repository https://github.com/jrock-3/tiny-compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jrock-3/tiny-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrock-3%2Ftiny-compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrock-3%2Ftiny-compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 441442437221e81c9b7fe5e8d917b36a758423ae
[INFO] checking jrock-3/tiny-compiler 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%2Fjrock-3%2Ftiny-compiler" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jrock-3/tiny-compiler
[INFO] finished tweaking git repo https://github.com/jrock-3/tiny-compiler
[INFO] tweaked toml for git repo https://github.com/jrock-3/tiny-compiler written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jrock-3/tiny-compiler 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/jrock-3/tiny-compiler 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8e654719142f5f0ef93bb4c710c5303533586c3bb0d48fb309e92d7b06d7ab77
[INFO] running `Command { std: "docker" "start" "-a" "8e654719142f5f0ef93bb4c710c5303533586c3bb0d48fb309e92d7b06d7ab77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e654719142f5f0ef93bb4c710c5303533586c3bb0d48fb309e92d7b06d7ab77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e654719142f5f0ef93bb4c710c5303533586c3bb0d48fb309e92d7b06d7ab77", kill_on_drop: false }`
[INFO] [stdout] 8e654719142f5f0ef93bb4c710c5303533586c3bb0d48fb309e92d7b06d7ab77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 26642af904c58ed2a74ea69294b4ce31383f8c37c1454c24d036f802e212238d
[INFO] running `Command { std: "docker" "start" "-a" "26642af904c58ed2a74ea69294b4ce31383f8c37c1454c24d036f802e212238d", kill_on_drop: false }`
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]     Checking project1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/tokenizer.rs:205:29
[INFO] [stdout]     |
[INFO] [stdout] 205 | / ...                   match self.idents.iter().position(|e| e == identifier) {
[INFO] [stdout] 206 | | ...                       Some(id) => id,
[INFO] [stdout] 207 | | ...                       None => {
[INFO] [stdout] 208 | | ...                           let res = self.idents.len();
[INFO] [stdout] ...   |
[INFO] [stdout] 214 | | ...                   .try_into()
[INFO] [stdout]     | |_________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `project1` (bin "project1") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/tokenizer.rs:205:29
[INFO] [stdout]     |
[INFO] [stdout] 205 | / ...                   match self.idents.iter().position(|e| e == identifier) {
[INFO] [stdout] 206 | | ...                       Some(id) => id,
[INFO] [stdout] 207 | | ...                       None => {
[INFO] [stdout] 208 | | ...                           let res = self.idents.len();
[INFO] [stdout] ...   |
[INFO] [stdout] 214 | | ...                   .try_into()
[INFO] [stdout]     | |_________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `project1` (bin "project1" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "26642af904c58ed2a74ea69294b4ce31383f8c37c1454c24d036f802e212238d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26642af904c58ed2a74ea69294b4ce31383f8c37c1454c24d036f802e212238d", kill_on_drop: false }`
[INFO] [stdout] 26642af904c58ed2a74ea69294b4ce31383f8c37c1454c24d036f802e212238d
