[INFO] cloning repository https://github.com/gatomod/rust_lab [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gatomod/rust_lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgatomod%2Frust_lab", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgatomod%2Frust_lab'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b285f9007010666c0e868fc47a937d4454df3157 [INFO] checking gatomod/rust_lab/b285f9007010666c0e868fc47a937d4454df3157 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgatomod%2Frust_lab" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/gatomod/rust_lab on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/gatomod/rust_lab [INFO] finished tweaking git repo https://github.com/gatomod/rust_lab [INFO] tweaked toml for git repo https://github.com/gatomod/rust_lab written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/gatomod/rust_lab 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f39e5c984a2bd96b2ffab869a046e56d723de38f10d41bb94bccee947966984b [INFO] running `Command { std: "docker" "start" "-a" "f39e5c984a2bd96b2ffab869a046e56d723de38f10d41bb94bccee947966984b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f39e5c984a2bd96b2ffab869a046e56d723de38f10d41bb94bccee947966984b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f39e5c984a2bd96b2ffab869a046e56d723de38f10d41bb94bccee947966984b", kill_on_drop: false }` [INFO] [stdout] f39e5c984a2bd96b2ffab869a046e56d723de38f10d41bb94bccee947966984b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c19121f52c71ebf46b18cdc9dec28dae5d635b1382d95d7512d4923b3c68c073 [INFO] running `Command { std: "docker" "start" "-a" "c19121f52c71ebf46b18cdc9dec28dae5d635b1382d95d7512d4923b3c68c073", kill_on_drop: false }` [INFO] [stderr] Checking either v1.11.0 [INFO] [stderr] Checking custom_array v0.1.0 (/opt/rustwide/workdir/custom_array) [INFO] [stderr] Checking shannon v0.1.0 (/opt/rustwide/workdir/shannon) [INFO] [stdout] warning: unused variable: `tree` [INFO] [stdout] --> custom_array/src/main.rs:37:13 [INFO] [stdout] | [INFO] [stdout] 37 | let mut tree: Vec> = Vec::new(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tree` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> custom_array/src/main.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | for i in buf {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `tree` [INFO] [stdout] --> custom_array/src/main.rs:37:13 [INFO] [stdout] | [INFO] [stdout] 37 | let mut tree: Vec> = Vec::new(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_tree` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> custom_array/src/main.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | for i in buf {} [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> custom_array/src/main.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let mut tree: Vec> = Vec::new(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `left`, `right`, and `value` are never read [INFO] [stdout] --> custom_array/src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 5 | left: Option>>, [INFO] [stdout] | ^^^^ [INFO] [stdout] 6 | right: Option>>, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 7 | value: Option, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> custom_array/src/main.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | let mut tree: Vec> = Vec::new(); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `left`, `right`, and `value` are never read [INFO] [stdout] --> custom_array/src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 4 | struct Node { [INFO] [stdout] | ---- fields in this struct [INFO] [stdout] 5 | left: Option>>, [INFO] [stdout] | ^^^^ [INFO] [stdout] 6 | right: Option>>, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 7 | value: Option, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Node` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Checking huffman v0.1.0 (/opt/rustwide/workdir/huffman) [INFO] [stdout] warning: unused import: `std::cell::Cell` [INFO] [stdout] --> huffman/src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::cell::Cell; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cell::Cell` [INFO] [stdout] --> huffman/src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::cell::Cell; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0368]: binary assignment operation `+=` cannot be applied to type `Box` [INFO] [stdout] --> huffman/src/main.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | *v += 1 [INFO] [stdout] | --^^^^^ [INFO] [stdout] | | [INFO] [stdout] | cannot use `+=` on type `Box` [INFO] [stdout] | [INFO] [stdout] note: the foreign item type `Box` doesn't implement `AddAssign<{integer}>` [INFO] [stdout] --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/alloc/src/boxed.rs:233:1 [INFO] [stdout] ::: /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/alloc/src/boxed.rs:236:1 [INFO] [stdout] | [INFO] [stdout] = note: not implement `AddAssign<{integer}>` [INFO] [stdout] help: `+=` can be used on `u32` if you dereference the left-hand side [INFO] [stdout] | [INFO] [stdout] 69 | **v += 1 [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0368]: binary assignment operation `+=` cannot be applied to type `Box` [INFO] [stdout] --> huffman/src/main.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | *v += 1 [INFO] [stdout] | --^^^^^ [INFO] [stdout] | | [INFO] [stdout] | cannot use `+=` on type `Box` [INFO] [stdout] | [INFO] [stdout] note: the foreign item type `Box` doesn't implement `AddAssign<{integer}>` [INFO] [stdout] --> /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/alloc/src/boxed.rs:233:1 [INFO] [stdout] ::: /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/alloc/src/boxed.rs:236:1 [INFO] [stdout] | [INFO] [stdout] = note: not implement `AddAssign<{integer}>` [INFO] [stdout] help: `+=` can be used on `u32` if you dereference the left-hand side [INFO] [stdout] | [INFO] [stdout] 69 | **v += 1 [INFO] [stdout] | + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0368`. [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0368`. [INFO] [stdout] [INFO] [stderr] error: could not compile `huffman` (bin "huffman") due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `huffman` (bin "huffman" test) due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "c19121f52c71ebf46b18cdc9dec28dae5d635b1382d95d7512d4923b3c68c073", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c19121f52c71ebf46b18cdc9dec28dae5d635b1382d95d7512d4923b3c68c073", kill_on_drop: false }` [INFO] [stdout] c19121f52c71ebf46b18cdc9dec28dae5d635b1382d95d7512d4923b3c68c073