[INFO] cloning repository https://github.com/alesanfra/lychrel [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alesanfra/lychrel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falesanfra%2Flychrel", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falesanfra%2Flychrel'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 899ac71c0fcc152f17cebde615e3eae38845f693 [INFO] checking alesanfra/lychrel 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%2Falesanfra%2Flychrel" "/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/alesanfra/lychrel [INFO] finished tweaking git repo https://github.com/alesanfra/lychrel [INFO] tweaked toml for git repo https://github.com/alesanfra/lychrel written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/alesanfra/lychrel 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/alesanfra/lychrel 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-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] 731ab2fe25e1de828fb50eef9a3982fb694308f0d7438c0e14a6554ea36bd37c [INFO] running `Command { std: "docker" "start" "-a" "731ab2fe25e1de828fb50eef9a3982fb694308f0d7438c0e14a6554ea36bd37c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "731ab2fe25e1de828fb50eef9a3982fb694308f0d7438c0e14a6554ea36bd37c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "731ab2fe25e1de828fb50eef9a3982fb694308f0d7438c0e14a6554ea36bd37c", kill_on_drop: false }` [INFO] [stdout] 731ab2fe25e1de828fb50eef9a3982fb694308f0d7438c0e14a6554ea36bd37c [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] af97255347a1226e395cd7b4efd99bafb23e7c693a39df0df5aa3dc3ac36a2cd [INFO] running `Command { std: "docker" "start" "-a" "af97255347a1226e395cd7b4efd99bafb23e7c693a39df0df5aa3dc3ac36a2cd", kill_on_drop: false }` [INFO] [stderr] Compiling target-lexicon v0.13.3 [INFO] [stderr] Compiling proc-macro2 v1.0.103 [INFO] [stderr] Compiling unicode-ident v1.0.20 [INFO] [stderr] Compiling quote v1.0.41 [INFO] [stderr] Compiling libc v0.2.177 [INFO] [stderr] Checking unindent v0.2.4 [INFO] [stderr] Compiling indoc v2.0.7 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling memoffset v0.9.1 [INFO] [stderr] Compiling pyo3-build-config v0.27.1 [INFO] [stderr] Compiling syn v2.0.108 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking num-bigint v0.4.6 [INFO] [stderr] Compiling pyo3-ffi v0.27.1 [INFO] [stderr] Compiling pyo3-macros-backend v0.27.1 [INFO] [stderr] Compiling pyo3 v0.27.1 [INFO] [stderr] Compiling pyo3-macros v0.27.1 [INFO] [stderr] Checking lychrel v0.8.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:121:76 [INFO] [stdout] | [INFO] [stdout] 121 | fn is_lychrel_candidate(number: BigUint, max_iterations: Option) -> bool { [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] --> src/lib.rs:184:68 [INFO] [stdout] | [INFO] [stdout] 184 | fn fibonacci(number: usize, p: Option, q: Option) -> BigInt { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:121:76 [INFO] [stdout] | [INFO] [stdout] 121 | fn is_lychrel_candidate(number: BigUint, max_iterations: Option) -> bool { [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] --> src/lib.rs:184:68 [INFO] [stdout] | [INFO] [stdout] 184 | fn fibonacci(number: usize, p: Option, q: Option) -> BigInt { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `lychrel` (lib test) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `lychrel` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "af97255347a1226e395cd7b4efd99bafb23e7c693a39df0df5aa3dc3ac36a2cd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "af97255347a1226e395cd7b4efd99bafb23e7c693a39df0df5aa3dc3ac36a2cd", kill_on_drop: false }` [INFO] [stdout] af97255347a1226e395cd7b4efd99bafb23e7c693a39df0df5aa3dc3ac36a2cd