[INFO] fetching crate symbolics_calculus 0.1.5... [INFO] checking symbolics_calculus-0.1.5 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863 [INFO] extracting crate symbolics_calculus 0.1.5 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate symbolics_calculus 0.1.5 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate symbolics_calculus 0.1.5 [INFO] finished tweaking crates.io crate symbolics_calculus 0.1.5 [INFO] tweaked toml for crates.io crate symbolics_calculus 0.1.5 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded symbolics_core v0.1.5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a43c859c96f1e91e3b2a489437030ea482abbeb0859a9ab5faef766b6a4200cb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "a43c859c96f1e91e3b2a489437030ea482abbeb0859a9ab5faef766b6a4200cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a43c859c96f1e91e3b2a489437030ea482abbeb0859a9ab5faef766b6a4200cb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a43c859c96f1e91e3b2a489437030ea482abbeb0859a9ab5faef766b6a4200cb", kill_on_drop: false }` [INFO] [stdout] a43c859c96f1e91e3b2a489437030ea482abbeb0859a9ab5faef766b6a4200cb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "-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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4a0adf654f322bfb1062280a84b744f82b10a6711afd35b023263304604cc202 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4a0adf654f322bfb1062280a84b744f82b10a6711afd35b023263304604cc202", kill_on_drop: false }` [INFO] [stderr] Checking symbolics_core v0.1.5 [INFO] [stderr] Checking symbolics_calculus v0.1.5 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `apply`, `s` [INFO] [stdout] --> src/lib.rs:3:22 [INFO] [stdout] | [INFO] [stdout] 3 | use symbolics_core::{s, apply}; [INFO] [stdout] | ^ ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/lib.rs:16:47 [INFO] [stdout] | [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ----^^^^^^-- [INFO] [stdout] | | | [INFO] [stdout] | | cannot infer type for type parameter `T` declared on the trait `AsRef` [INFO] [stdout] | this method call resolves to `&T` [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `String: AsRef<_>` [INFO] [stdout] help: use the fully qualified path for the potential candidates [INFO] [stdout] | [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stderr] error: could not compile `symbolics_calculus` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> src/lib.rs:16:47 [INFO] [stdout] | [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(wrt.as_ref()) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ----^^^^^^-- [INFO] [stdout] | | | [INFO] [stdout] | | cannot infer type for type parameter `T` declared on the trait `AsRef` [INFO] [stdout] | this method call resolves to `&T` [INFO] [stdout] | [INFO] [stdout] = note: cannot satisfy `String: AsRef<_>` [INFO] [stdout] help: use the fully qualified path for the potential candidates [INFO] [stdout] | [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 16 | Add(a, b) => a.clone().deriv1(>::as_ref(wrt)) + b.clone().deriv1(wrt.as_ref()), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0283`. [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "4a0adf654f322bfb1062280a84b744f82b10a6711afd35b023263304604cc202", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4a0adf654f322bfb1062280a84b744f82b10a6711afd35b023263304604cc202", kill_on_drop: false }` [INFO] [stdout] 4a0adf654f322bfb1062280a84b744f82b10a6711afd35b023263304604cc202