[INFO] fetching crate kurobako_solvers 0.2.2... [INFO] checking kurobako_solvers-0.2.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate kurobako_solvers 0.2.2 into /workspace/builds/worker-2-tc2/source [INFO] started tweaking crates.io crate kurobako_solvers 0.2.2 [INFO] finished tweaking crates.io crate kurobako_solvers 0.2.2 [INFO] tweaked toml for crates.io crate kurobako_solvers 0.2.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate kurobako_solvers 0.2.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 77 packages to latest compatible versions [INFO] [stderr] Adding rand v0.8.5 (available: v0.9.2) [INFO] [stderr] Adding trackable v0.2.24 (available: v1.3.0) [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-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] d08b53243c7712b8db87003c2ae30b02df81baee5dd338f2a93a28ae14de8dc1 [INFO] running `Command { std: "docker" "start" "-a" "d08b53243c7712b8db87003c2ae30b02df81baee5dd338f2a93a28ae14de8dc1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d08b53243c7712b8db87003c2ae30b02df81baee5dd338f2a93a28ae14de8dc1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d08b53243c7712b8db87003c2ae30b02df81baee5dd338f2a93a28ae14de8dc1", kill_on_drop: false }` [INFO] [stdout] d08b53243c7712b8db87003c2ae30b02df81baee5dd338f2a93a28ae14de8dc1 [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] 896c82d9c00dddaa7d7d3a7da75eaa703186b2dbb1cb42c104ebf56f9ab45ffa [INFO] running `Command { std: "docker" "start" "-a" "896c82d9c00dddaa7d7d3a7da75eaa703186b2dbb1cb42c104ebf56f9ab45ffa", kill_on_drop: false }` [INFO] [stderr] Compiling generic-array v0.14.9 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling rlua v0.17.1 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking bstr v0.2.17 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Checking tempfile v3.23.0 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking block-buffer v0.9.0 [INFO] [stderr] Checking digest v0.9.0 [INFO] [stderr] Checking sha2 v0.9.9 [INFO] [stderr] Checking serde v1.0.228 [INFO] [stderr] Compiling trackable_derive v1.0.0 [INFO] [stderr] Compiling structopt-derive v0.4.18 [INFO] [stderr] Checking trackable v1.3.0 [INFO] [stderr] Checking trackable v0.2.24 [INFO] [stderr] Checking yamakan v0.2.0 [INFO] [stderr] Checking structopt v0.3.26 [INFO] [stderr] Checking kurobako_core v0.1.12 [INFO] [stderr] Checking kurobako_solvers v0.2.2 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/optuna.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 46 | / /// Log level. [INFO] [stdout] 47 | | #[structopt( [INFO] [stdout] 48 | | long, [INFO] [stdout] 49 | | default_value = "warning", [INFO] [stdout] ... | [INFO] [stdout] 53 | | #[serde(default = "defaults::loglevel")] [INFO] [stdout] 54 | | pub loglevel: String, [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/optuna.rs:56:5 [INFO] [stdout] | [INFO] [stdout] 56 | / /// Sampler class name (e.g., "TPESampler"). [INFO] [stdout] 57 | | #[structopt(long)] [INFO] [stdout] 58 | | #[serde(skip_serializing_if = "Option::is_none")] [INFO] [stdout] 59 | | #[serde(default)] [INFO] [stdout] 60 | | pub sampler: Option, [INFO] [stdout] | |_______________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/optuna.rs:62:5 [INFO] [stdout] | [INFO] [stdout] 62 | / /// Sampler arguments (e.g., "{\"seed\": 10}"). [INFO] [stdout] 63 | | #[structopt(long)] [INFO] [stdout] 64 | | #[serde(skip_serializing_if = "Option::is_none")] [INFO] [stdout] 65 | | #[serde(default)] [INFO] [stdout] 66 | | pub sampler_kwargs: Option, [INFO] [stdout] | |______________________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/optuna.rs:68:5 [INFO] [stdout] | [INFO] [stdout] 68 | / /// Pruner class name (e.g., "MedianPruner"). [INFO] [stdout] 69 | | #[structopt(long)] [INFO] [stdout] 70 | | #[serde(skip_serializing_if = "Option::is_none")] [INFO] [stdout] 71 | | #[serde(default)] [INFO] [stdout] 72 | | pub pruner: Option, [INFO] [stdout] | |______________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/optuna.rs:74:5 [INFO] [stdout] | [INFO] [stdout] 74 | / /// Pruner arguments (e.g., "{\"n_warmup_steps\": 10}"). [INFO] [stdout] 75 | | #[structopt(long)] [INFO] [stdout] 76 | | #[serde(skip_serializing_if = "Option::is_none")] [INFO] [stdout] 77 | | #[serde(default)] [INFO] [stdout] 78 | | pub pruner_kwargs: Option, [INFO] [stdout] | |_____________________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/optuna.rs:46:5 [INFO] [stdout] | [INFO] [stdout] 46 | / /// Log level. [INFO] [stdout] 47 | | #[structopt( [INFO] [stdout] 48 | | long, [INFO] [stdout] 49 | | default_value = "warning", [INFO] [stdout] ... | [INFO] [stdout] 53 | | #[serde(default = "defaults::loglevel")] [INFO] [stdout] 54 | | pub loglevel: String, [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/optuna.rs:56:5 [INFO] [stdout] | [INFO] [stdout] 56 | / /// Sampler class name (e.g., "TPESampler"). [INFO] [stdout] 57 | | #[structopt(long)] [INFO] [stdout] 58 | | #[serde(skip_serializing_if = "Option::is_none")] [INFO] [stdout] 59 | | #[serde(default)] [INFO] [stdout] 60 | | pub sampler: Option, [INFO] [stdout] | |_______________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/optuna.rs:62:5 [INFO] [stdout] | [INFO] [stdout] 62 | / /// Sampler arguments (e.g., "{\"seed\": 10}"). [INFO] [stdout] 63 | | #[structopt(long)] [INFO] [stdout] 64 | | #[serde(skip_serializing_if = "Option::is_none")] [INFO] [stdout] 65 | | #[serde(default)] [INFO] [stdout] 66 | | pub sampler_kwargs: Option, [INFO] [stdout] | |______________________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/optuna.rs:68:5 [INFO] [stdout] | [INFO] [stdout] 68 | / /// Pruner class name (e.g., "MedianPruner"). [INFO] [stdout] 69 | | #[structopt(long)] [INFO] [stdout] 70 | | #[serde(skip_serializing_if = "Option::is_none")] [INFO] [stdout] 71 | | #[serde(default)] [INFO] [stdout] 72 | | pub pruner: Option, [INFO] [stdout] | |______________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/optuna.rs:74:5 [INFO] [stdout] | [INFO] [stdout] 74 | / /// Pruner arguments (e.g., "{\"n_warmup_steps\": 10}"). [INFO] [stdout] 75 | | #[structopt(long)] [INFO] [stdout] 76 | | #[serde(skip_serializing_if = "Option::is_none")] [INFO] [stdout] 77 | | #[serde(default)] [INFO] [stdout] 78 | | pub pruner_kwargs: Option, [INFO] [stdout] | |_____________________________________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `kurobako_solvers` (lib) due to 5 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `kurobako_solvers` (lib test) due to 5 previous errors [INFO] running `Command { std: "docker" "inspect" "896c82d9c00dddaa7d7d3a7da75eaa703186b2dbb1cb42c104ebf56f9ab45ffa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "896c82d9c00dddaa7d7d3a7da75eaa703186b2dbb1cb42c104ebf56f9ab45ffa", kill_on_drop: false }` [INFO] [stdout] 896c82d9c00dddaa7d7d3a7da75eaa703186b2dbb1cb42c104ebf56f9ab45ffa