[INFO] fetching crate mwmatching 0.1.1... [INFO] testing mwmatching-0.1.1 against beta-2022-02-22 for beta-1.60-1 [INFO] extracting crate mwmatching 0.1.1 into /workspace/builds/worker-99/source [INFO] validating manifest of crates.io crate mwmatching 0.1.1 on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate mwmatching 0.1.1 [INFO] finished tweaking crates.io crate mwmatching 0.1.1 [INFO] tweaked toml for crates.io crate mwmatching 0.1.1 written to /workspace/builds/worker-99/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 56cca86fe345ab33392ca5174fb1861d430d27bbf33b04e295606d54d56c35e2 [INFO] running `Command { std: "docker" "start" "-a" "56cca86fe345ab33392ca5174fb1861d430d27bbf33b04e295606d54d56c35e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "56cca86fe345ab33392ca5174fb1861d430d27bbf33b04e295606d54d56c35e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "56cca86fe345ab33392ca5174fb1861d430d27bbf33b04e295606d54d56c35e2", kill_on_drop: false }` [INFO] [stdout] 56cca86fe345ab33392ca5174fb1861d430d27bbf33b04e295606d54d56c35e2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a35cdd9392e3d6e62a28bee80e63aabfe735a6957249786528307378457be3a4 [INFO] running `Command { std: "docker" "start" "-a" "a35cdd9392e3d6e62a28bee80e63aabfe735a6957249786528307378457be3a4", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling mwmatching v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:1083:60 [INFO] [stdout] | [INFO] [stdout] 1083 | let actual_index = if index>= 0 {index as usize} else {(v.len()-(-index) as usize)}; [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 1083 - let actual_index = if index>= 0 {index as usize} else {(v.len()-(-index) as usize)}; [INFO] [stdout] 1083 + let actual_index = if index>= 0 {index as usize} else {v.len()-(-index) as usize}; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:744:25 [INFO] [stdout] | [INFO] [stdout] 744 | let mut k = p / 2; [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: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:852:29 [INFO] [stdout] | [INFO] [stdout] 852 | let mut k = p / 2; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.90s [INFO] running `Command { std: "docker" "inspect" "a35cdd9392e3d6e62a28bee80e63aabfe735a6957249786528307378457be3a4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a35cdd9392e3d6e62a28bee80e63aabfe735a6957249786528307378457be3a4", kill_on_drop: false }` [INFO] [stdout] a35cdd9392e3d6e62a28bee80e63aabfe735a6957249786528307378457be3a4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-99/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c35432e709cd77086c9485fd3c4b29437b3752fc8ca48d2eeb0326b541b70143 [INFO] running `Command { std: "docker" "start" "-a" "c35432e709cd77086c9485fd3c4b29437b3752fc8ca48d2eeb0326b541b70143", kill_on_drop: false }` [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:1083:60 [INFO] [stdout] | [INFO] [stdout] 1083 | let actual_index = if index>= 0 {index as usize} else {(v.len()-(-index) as usize)}; [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 1083 - let actual_index = if index>= 0 {index as usize} else {(v.len()-(-index) as usize)}; [INFO] [stdout] 1083 + let actual_index = if index>= 0 {index as usize} else {v.len()-(-index) as usize}; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling mwmatching v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:744:25 [INFO] [stdout] | [INFO] [stdout] 744 | let mut k = p / 2; [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: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:852:29 [INFO] [stdout] | [INFO] [stdout] 852 | let mut k = p / 2; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0463]: can't find crate for `rand` [INFO] [stdout] --> examples/largedata/main.rs:4:1 [INFO] [stdout] | [INFO] [stdout] 4 | extern crate rand; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ can't find crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> examples/largedata/main.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(rustc_private)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/lib.rs:1083:60 [INFO] [stdout] | [INFO] [stdout] 1083 | let actual_index = if index>= 0 {index as usize} else {(v.len()-(-index) as usize)}; [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 1083 - let actual_index = if index>= 0 {index as usize} else {(v.len()-(-index) as usize)}; [INFO] [stdout] 1083 + let actual_index = if index>= 0 {index as usize} else {v.len()-(-index) as usize}; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0463, E0554. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0463`. [INFO] [stdout] [INFO] [stderr] error: could not compile `mwmatching` due to 3 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:744:25 [INFO] [stdout] | [INFO] [stdout] 744 | let mut k = p / 2; [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: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:852:29 [INFO] [stdout] | [INFO] [stdout] 852 | let mut k = p / 2; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "c35432e709cd77086c9485fd3c4b29437b3752fc8ca48d2eeb0326b541b70143", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c35432e709cd77086c9485fd3c4b29437b3752fc8ca48d2eeb0326b541b70143", kill_on_drop: false }` [INFO] [stdout] c35432e709cd77086c9485fd3c4b29437b3752fc8ca48d2eeb0326b541b70143