[INFO] fetching crate fr 0.1.1... [INFO] checking fr-0.1.1 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579 [INFO] extracting crate fr 0.1.1 into /workspace/builds/worker-6/source [INFO] validating manifest of crates.io crate fr 0.1.1 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate fr 0.1.1 [INFO] finished tweaking crates.io crate fr 0.1.1 [INFO] tweaked toml for crates.io crate fr 0.1.1 written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate crates.io crate fr 0.1.1 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded comment-strip v0.1.3 [INFO] [stderr] Downloaded comment v0.1.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3012dcf8ef47cb423179a90d1be86e8da326c438c6fcb64ee9a15ee6021cdfc8 [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" "3012dcf8ef47cb423179a90d1be86e8da326c438c6fcb64ee9a15ee6021cdfc8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3012dcf8ef47cb423179a90d1be86e8da326c438c6fcb64ee9a15ee6021cdfc8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3012dcf8ef47cb423179a90d1be86e8da326c438c6fcb64ee9a15ee6021cdfc8", kill_on_drop: false }` [INFO] [stdout] 3012dcf8ef47cb423179a90d1be86e8da326c438c6fcb64ee9a15ee6021cdfc8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 792f851414926a31aa135855d66b53d5e08be66b853e855d5e4f54dd37610cde [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" "792f851414926a31aa135855d66b53d5e08be66b853e855d5e4f54dd37610cde", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling syn v1.0.14 [INFO] [stderr] Compiling memchr v2.3.0 [INFO] [stderr] Compiling serde v1.0.104 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling regex-syntax v0.6.14 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling fixedbitset v0.1.9 [INFO] [stderr] Compiling new_debug_unreachable v1.0.4 [INFO] [stderr] Checking unicode-width v0.1.7 [INFO] [stderr] Compiling precomputed-hash v0.1.1 [INFO] [stderr] Compiling ordermap v0.3.5 [INFO] [stderr] Compiling bit-vec v0.5.1 [INFO] [stderr] Compiling strsim v0.9.3 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Compiling diff v0.1.12 [INFO] [stderr] Compiling lalrpop-util v0.17.2 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling phf_shared v0.7.24 [INFO] [stderr] Compiling itertools v0.8.2 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking thread_local v1.0.1 [INFO] [stderr] Compiling bit-set v0.5.1 [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Compiling typenum v1.11.2 [INFO] [stderr] Compiling petgraph v0.4.13 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking dirs v1.0.5 [INFO] [stderr] Checking generic-array v0.12.3 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Compiling ena v0.13.1 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking term v0.5.2 [INFO] [stderr] Checking aho-corasick v0.7.7 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking block-buffer v0.7.3 [INFO] [stderr] Checking digest v0.8.1 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking ascii-canvas v2.0.0 [INFO] [stderr] Checking sha2 v0.8.1 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Checking regex v1.3.4 [INFO] [stderr] Compiling string_cache_codegen v0.4.4 [INFO] [stderr] Compiling string_cache v0.7.5 [INFO] [stderr] Checking comment-strip v0.1.3 [INFO] [stderr] Checking comment v0.1.0 [INFO] [stderr] Compiling serde_derive v1.0.104 [INFO] [stderr] Compiling docopt v1.1.0 [INFO] [stderr] Checking lalrpop v0.17.2 [INFO] [stderr] Compiling fr v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> build.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | / lalrpop::Configuration::new() [INFO] [stdout] 5 | | .generate_in_source_tree() [INFO] [stdout] 6 | | .process(); [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40417:5 [INFO] [stdout] | [INFO] [stdout] 40417 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40428:5 [INFO] [stdout] | [INFO] [stdout] 40428 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40439:5 [INFO] [stdout] | [INFO] [stdout] 40439 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40450:5 [INFO] [stdout] | [INFO] [stdout] 40450 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40461:5 [INFO] [stdout] | [INFO] [stdout] 40461 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40472:5 [INFO] [stdout] | [INFO] [stdout] 40472 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40483:5 [INFO] [stdout] | [INFO] [stdout] 40483 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40494:5 [INFO] [stdout] | [INFO] [stdout] 40494 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40505:5 [INFO] [stdout] | [INFO] [stdout] 40505 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40516:5 [INFO] [stdout] | [INFO] [stdout] 40516 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40527:5 [INFO] [stdout] | [INFO] [stdout] 40527 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40538:5 [INFO] [stdout] | [INFO] [stdout] 40538 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40549:5 [INFO] [stdout] | [INFO] [stdout] 40549 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40967:5 [INFO] [stdout] | [INFO] [stdout] 40967 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40417:5 [INFO] [stdout] | [INFO] [stdout] 40417 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40428:5 [INFO] [stdout] | [INFO] [stdout] 40428 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40439:5 [INFO] [stdout] | [INFO] [stdout] 40439 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40450:5 [INFO] [stdout] | [INFO] [stdout] 40450 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40461:5 [INFO] [stdout] | [INFO] [stdout] 40461 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40472:5 [INFO] [stdout] | [INFO] [stdout] 40472 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40483:5 [INFO] [stdout] | [INFO] [stdout] 40483 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40494:5 [INFO] [stdout] | [INFO] [stdout] 40494 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40505:5 [INFO] [stdout] | [INFO] [stdout] 40505 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40516:5 [INFO] [stdout] | [INFO] [stdout] 40516 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40527:5 [INFO] [stdout] | [INFO] [stdout] 40527 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40538:5 [INFO] [stdout] | [INFO] [stdout] 40538 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40549:5 [INFO] [stdout] | [INFO] [stdout] 40549 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around block return value [INFO] [stdout] --> src/parser.rs:40967:5 [INFO] [stdout] | [INFO] [stdout] 40967 | (__0) [INFO] [stdout] | ^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `original_len` [INFO] [stdout] --> src/bin.rs:80:9 [INFO] [stdout] | [INFO] [stdout] 80 | let original_len = compiled.len(); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_original_len` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `original_len` [INFO] [stdout] --> src/bin.rs:80:9 [INFO] [stdout] | [INFO] [stdout] 80 | let original_len = compiled.len(); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_original_len` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2m 31s [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "792f851414926a31aa135855d66b53d5e08be66b853e855d5e4f54dd37610cde", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "792f851414926a31aa135855d66b53d5e08be66b853e855d5e4f54dd37610cde", kill_on_drop: false }` [INFO] [stdout] 792f851414926a31aa135855d66b53d5e08be66b853e855d5e4f54dd37610cde