[INFO] cloning repository https://github.com/vaqxai/rust-knapsack [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vaqxai/rust-knapsack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaqxai%2Frust-knapsack", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaqxai%2Frust-knapsack'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 72affbc0810699fcad4a095a373898cd667af732 [INFO] checking vaqxai/rust-knapsack 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%2Fvaqxai%2Frust-knapsack" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/vaqxai/rust-knapsack [INFO] finished tweaking git repo https://github.com/vaqxai/rust-knapsack [INFO] tweaked toml for git repo https://github.com/vaqxai/rust-knapsack written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/vaqxai/rust-knapsack 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/vaqxai/rust-knapsack 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] d0c14f917ff6e234acac2f1dc8f08631eb64a85a0eb43c45558e30752b2fcf1d [INFO] running `Command { std: "docker" "start" "-a" "d0c14f917ff6e234acac2f1dc8f08631eb64a85a0eb43c45558e30752b2fcf1d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d0c14f917ff6e234acac2f1dc8f08631eb64a85a0eb43c45558e30752b2fcf1d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d0c14f917ff6e234acac2f1dc8f08631eb64a85a0eb43c45558e30752b2fcf1d", kill_on_drop: false }` [INFO] [stdout] d0c14f917ff6e234acac2f1dc8f08631eb64a85a0eb43c45558e30752b2fcf1d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 5d53184be53dd0474fb7ef6ed96ebca41a82f5647a81bbf13bd1dbf88a5ec06b [INFO] running `Command { std: "docker" "start" "-a" "5d53184be53dd0474fb7ef6ed96ebca41a82f5647a81bbf13bd1dbf88a5ec06b", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.39 [INFO] [stderr] Compiling unicode-ident v1.0.0 [INFO] [stderr] Compiling syn v1.0.96 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Checking os_str_bytes v6.1.0 [INFO] [stderr] Compiling heck v0.4.0 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Compiling indexmap v1.8.2 [INFO] [stderr] Checking snowflake v1.3.0 [INFO] [stderr] Checking clap_lex v0.2.0 [INFO] [stderr] Checking itertools v0.10.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Compiling quote v1.0.18 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling clap_derive v3.1.18 [INFO] [stderr] Checking clap v3.1.18 [INFO] [stderr] Checking rust-knapsack v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | / #[clap(help = "The file containing the items to put in the knapsack, format: NOT YET IMPLEMENTED")] [INFO] [stdout] 28 | | filename: 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] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/main.rs:32:31 [INFO] [stdout] | [INFO] [stdout] 32 | fn get_permutation_iter(items:&Vec) -> (Powerset>, usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 32 | fn get_permutation_iter(items:&Vec) -> (Powerset>, usize) { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-knapsack` (bin "rust-knapsack" test) due to 1 previous error; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:27:9 [INFO] [stdout] | [INFO] [stdout] 27 | / #[clap(help = "The file containing the items to put in the knapsack, format: NOT YET IMPLEMENTED")] [INFO] [stdout] 28 | | filename: 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] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/main.rs:32:31 [INFO] [stdout] | [INFO] [stdout] 32 | fn get_permutation_iter(items:&Vec) -> (Powerset>, usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here [INFO] [stdout] | | [INFO] [stdout] | the lifetime is elided here [INFO] [stdout] | [INFO] [stdout] = help: the same lifetime is referred to in inconsistent ways, making the signature confusing [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: use `'_` for type paths [INFO] [stdout] | [INFO] [stdout] 32 | fn get_permutation_iter(items:&Vec) -> (Powerset>, usize) { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-knapsack` (bin "rust-knapsack") due to 1 previous error; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "5d53184be53dd0474fb7ef6ed96ebca41a82f5647a81bbf13bd1dbf88a5ec06b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5d53184be53dd0474fb7ef6ed96ebca41a82f5647a81bbf13bd1dbf88a5ec06b", kill_on_drop: false }` [INFO] [stdout] 5d53184be53dd0474fb7ef6ed96ebca41a82f5647a81bbf13bd1dbf88a5ec06b