[INFO] fetching crate luci 0.2.0... [INFO] checking luci-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate luci 0.2.0 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate luci 0.2.0 [INFO] removed 0 missing examples [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate luci 0.2.0 [INFO] tweaked toml for crates.io crate luci 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate luci 0.2.0 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 crates.io crate luci 0.2.0 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2a7f5c44c9f992f29da786bb45f839ee3a86cdfc5275af29c74b42dca236148a [INFO] running `Command { std: "docker" "start" "-a" "2a7f5c44c9f992f29da786bb45f839ee3a86cdfc5275af29c74b42dca236148a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2a7f5c44c9f992f29da786bb45f839ee3a86cdfc5275af29c74b42dca236148a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2a7f5c44c9f992f29da786bb45f839ee3a86cdfc5275af29c74b42dca236148a", kill_on_drop: false }` [INFO] [stdout] 2a7f5c44c9f992f29da786bb45f839ee3a86cdfc5275af29c74b42dca236148a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ce0155b8878d1a3777f0964e99b8ed647c195a5ea3c235b66b0fc6b5b6f28ac1 [INFO] running `Command { std: "docker" "start" "-a" "ce0155b8878d1a3777f0964e99b8ed647c195a5ea3c235b66b0fc6b5b6f28ac1", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.88 [INFO] [stderr] Compiling unicode-ident v1.0.13 [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Compiling libc v0.2.161 [INFO] [stderr] Checking unicode-bidi v0.3.17 [INFO] [stderr] Checking kix v0.4.0 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Checking tinyvec v1.8.0 [INFO] [stderr] Checking unicode-normalization v0.1.24 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Checking regex-automata v0.4.8 [INFO] [stderr] Checking idna v0.5.0 [INFO] [stderr] Compiling syn v2.0.82 [INFO] [stderr] Checking url v2.5.2 [INFO] [stderr] Checking regex v1.11.0 [INFO] [stderr] Compiling serde_derive v1.0.210 [INFO] [stderr] Checking linked-hash-map v0.5.6 [INFO] [stderr] Checking serde-hjson v1.1.0 [INFO] [stderr] Checking luci v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: ControlFlow, PathBuf> [INFO] [stdout] --> examples/read_jsonc.rs:36:16 [INFO] [stdout] | [INFO] [stdout] 36 | let path = PathBuf::from_str("/tmp/luci_example.json")?; [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 [INFO] [stdout] --> examples/read_jsonc.rs:36:16 [INFO] [stdout] | [INFO] [stdout] 36 | let path = PathBuf::from_str("/tmp/luci_example.json")?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `luci` (example "read_jsonc") due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "ce0155b8878d1a3777f0964e99b8ed647c195a5ea3c235b66b0fc6b5b6f28ac1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce0155b8878d1a3777f0964e99b8ed647c195a5ea3c235b66b0fc6b5b6f28ac1", kill_on_drop: false }` [INFO] [stdout] ce0155b8878d1a3777f0964e99b8ed647c195a5ea3c235b66b0fc6b5b6f28ac1