[INFO] cloning repository https://github.com/qubitserfed/graph-wizard [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qubitserfed/graph-wizard" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqubitserfed%2Fgraph-wizard", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqubitserfed%2Fgraph-wizard'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ea3955d9720a0ed6ac18bace8d0db1ab3b9fca6b [INFO] checking qubitserfed/graph-wizard 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%2Fqubitserfed%2Fgraph-wizard" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/qubitserfed/graph-wizard [INFO] finished tweaking git repo https://github.com/qubitserfed/graph-wizard [INFO] tweaked toml for git repo https://github.com/qubitserfed/graph-wizard written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/qubitserfed/graph-wizard 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/qubitserfed/graph-wizard 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] 6a0f097286905dce776f1e08ed868c802202ebafdf1ba38aa8790b812168100e [INFO] running `Command { std: "docker" "start" "-a" "6a0f097286905dce776f1e08ed868c802202ebafdf1ba38aa8790b812168100e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6a0f097286905dce776f1e08ed868c802202ebafdf1ba38aa8790b812168100e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6a0f097286905dce776f1e08ed868c802202ebafdf1ba38aa8790b812168100e", kill_on_drop: false }` [INFO] [stdout] 6a0f097286905dce776f1e08ed868c802202ebafdf1ba38aa8790b812168100e [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] 1938caa0d5700d37f52f2e1ff9d03790b4dbaacd2f8ac0906bd0adc19e7d181c [INFO] running `Command { std: "docker" "start" "-a" "1938caa0d5700d37f52f2e1ff9d03790b4dbaacd2f8ac0906bd0adc19e7d181c", kill_on_drop: false }` [INFO] [stderr] Compiling target-lexicon v0.13.3 [INFO] [stderr] Compiling proc-macro2 v1.0.103 [INFO] [stderr] Compiling quote v1.0.41 [INFO] [stderr] Compiling unicode-ident v1.0.22 [INFO] [stderr] Compiling libc v0.2.177 [INFO] [stderr] Compiling indoc v2.0.7 [INFO] [stderr] Checking unindent v0.2.4 [INFO] [stderr] Compiling memoffset v0.9.1 [INFO] [stderr] Compiling pyo3-build-config v0.25.1 [INFO] [stderr] Compiling syn v2.0.108 [INFO] [stderr] Compiling pyo3-ffi v0.25.1 [INFO] [stderr] Compiling pyo3-macros-backend v0.25.1 [INFO] [stderr] Compiling pyo3 v0.25.1 [INFO] [stderr] Compiling pyo3-macros v0.25.1 [INFO] [stderr] Checking graph-wizard v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:26:68 [INFO] [stdout] | [INFO] [stdout] 26 | fn from_edge_list(n: usize, edges: Vec<(usize, usize)>) -> Self { [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, Infallible> [INFO] [stdout] --> src/lib.rs:36:35 [INFO] [stdout] | [INFO] [stdout] 36 | fn to_edge_list(&self) -> Vec<(usize, usize)> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/lib.rs:40:42 [INFO] [stdout] | [INFO] [stdout] 40 | fn neighbors(&self, u: usize) -> Vec { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:26:68 [INFO] [stdout] | [INFO] [stdout] 26 | fn from_edge_list(n: usize, edges: Vec<(usize, usize)>) -> Self { [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, Infallible> [INFO] [stdout] --> src/lib.rs:36:35 [INFO] [stdout] | [INFO] [stdout] 36 | fn to_edge_list(&self) -> Vec<(usize, usize)> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result, Infallible> [INFO] [stdout] --> src/lib.rs:40:42 [INFO] [stdout] | [INFO] [stdout] 40 | fn neighbors(&self, u: usize) -> Vec { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `graph-wizard` (lib) due to 3 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `graph-wizard` (lib test) due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "1938caa0d5700d37f52f2e1ff9d03790b4dbaacd2f8ac0906bd0adc19e7d181c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1938caa0d5700d37f52f2e1ff9d03790b4dbaacd2f8ac0906bd0adc19e7d181c", kill_on_drop: false }` [INFO] [stdout] 1938caa0d5700d37f52f2e1ff9d03790b4dbaacd2f8ac0906bd0adc19e7d181c