[INFO] cloning repository https://github.com/Snektron/mamba [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Snektron/mamba" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSnektron%2Fmamba"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSnektron%2Fmamba'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 8e16034b3ed9bcf9a5a92b15d9ce65d3bcf8360e [INFO] testing Snektron/mamba against 1.44.0 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSnektron%2Fmamba" "/workspace/builds/worker-8/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Snektron/mamba on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/Snektron/mamba [INFO] finished tweaking git repo https://github.com/Snektron/mamba [INFO] tweaked toml for git repo https://github.com/Snektron/mamba written to /workspace/builds/worker-8/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 3c311acdff70fc891d8b299be0fb6eeda20958c4c00d4d311a1e8dfc3dfd4355 [INFO] running `"docker" "start" "-a" "3c311acdff70fc891d8b299be0fb6eeda20958c4c00d4d311a1e8dfc3dfd4355"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling libc v0.2.71 [INFO] [stderr] Compiling proc-macro2 v1.0.18 [INFO] [stderr] Compiling syn v1.0.30 [INFO] [stderr] Compiling typenum v1.12.0 [INFO] [stderr] Compiling siphasher v0.2.3 [INFO] [stderr] Compiling serde v1.0.111 [INFO] [stderr] Compiling string_cache_shared v0.3.0 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling byte-tools v0.3.1 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling regex-syntax v0.6.18 [INFO] [stderr] Compiling precomputed-hash v0.1.1 [INFO] [stderr] Compiling new_debug_unreachable v1.0.4 [INFO] [stderr] Compiling ordermap v0.3.5 [INFO] [stderr] Compiling bit-vec v0.6.2 [INFO] [stderr] Compiling either v1.5.3 [INFO] [stderr] Compiling opaque-debug v0.2.3 [INFO] [stderr] Compiling strsim v0.9.3 [INFO] [stderr] Compiling fixedbitset v0.1.9 [INFO] [stderr] Compiling term v0.4.6 [INFO] [stderr] Compiling diff v0.1.12 [INFO] [stderr] Compiling lalrpop-util v0.16.3 [INFO] [stderr] Compiling block-padding v0.1.5 [INFO] [stderr] Compiling phf_shared v0.7.24 [INFO] [stderr] Compiling itertools v0.8.2 [INFO] [stderr] Compiling bit-set v0.5.2 [INFO] [stderr] Compiling petgraph v0.4.13 [INFO] [stderr] Compiling ena v0.11.0 [INFO] [stderr] Compiling ascii-canvas v1.0.0 [INFO] [stderr] Compiling quote v1.0.6 [INFO] [stderr] Compiling rand_os v0.1.3 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.33.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling generic-array v0.12.3 [INFO] [stderr] Compiling block-buffer v0.7.3 [INFO] [stderr] Compiling digest v0.8.1 [INFO] [stderr] Compiling sha2 v0.8.2 [INFO] [stderr] Compiling regex v1.3.9 [INFO] [stderr] Compiling phf_generator v0.7.24 [INFO] [stderr] Compiling string_cache_codegen v0.4.4 [INFO] [stderr] Compiling string_cache v0.7.5 [INFO] [stderr] Compiling serde_derive v1.0.111 [INFO] [stderr] Compiling docopt v1.1.0 [INFO] [stderr] Compiling lalrpop v0.16.3 [INFO] [stderr] Compiling mamba v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1861:5 [INFO] [stderr] | [INFO] [stderr] 1861 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1934:5 [INFO] [stderr] | [INFO] [stderr] 1934 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1947:5 [INFO] [stderr] | [INFO] [stderr] 1947 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1995:5 [INFO] [stderr] | [INFO] [stderr] 1995 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:2009:5 [INFO] [stderr] | [INFO] [stderr] 2009 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:2216:5 [INFO] [stderr] | [INFO] [stderr] 2216 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ast/construct.rs:188:13 [INFO] [stderr] | [INFO] [stderr] 188 | let mut t = check_arms(&from, arms, &states, &alphabet)?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 7 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2m 11s [INFO] running `"docker" "inspect" "3c311acdff70fc891d8b299be0fb6eeda20958c4c00d4d311a1e8dfc3dfd4355"` [INFO] running `"docker" "rm" "-f" "3c311acdff70fc891d8b299be0fb6eeda20958c4c00d4d311a1e8dfc3dfd4355"` [INFO] [stdout] 3c311acdff70fc891d8b299be0fb6eeda20958c4c00d4d311a1e8dfc3dfd4355 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7b879ade8eb00a239c8eb8045d18dd618294d8937b3f1e7b49fc051e25ef84e0 [INFO] running `"docker" "start" "-a" "7b879ade8eb00a239c8eb8045d18dd618294d8937b3f1e7b49fc051e25ef84e0"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling mamba v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1861:5 [INFO] [stderr] | [INFO] [stderr] 1861 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1934:5 [INFO] [stderr] | [INFO] [stderr] 1934 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1947:5 [INFO] [stderr] | [INFO] [stderr] 1947 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1995:5 [INFO] [stderr] | [INFO] [stderr] 1995 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:2009:5 [INFO] [stderr] | [INFO] [stderr] 2009 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:2216:5 [INFO] [stderr] | [INFO] [stderr] 2216 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ast/construct.rs:188:13 [INFO] [stderr] | [INFO] [stderr] 188 | let mut t = check_arms(&from, arms, &states, &alphabet)?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 7 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.11s [INFO] running `"docker" "inspect" "7b879ade8eb00a239c8eb8045d18dd618294d8937b3f1e7b49fc051e25ef84e0"` [INFO] running `"docker" "rm" "-f" "7b879ade8eb00a239c8eb8045d18dd618294d8937b3f1e7b49fc051e25ef84e0"` [INFO] [stdout] 7b879ade8eb00a239c8eb8045d18dd618294d8937b3f1e7b49fc051e25ef84e0 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 84ad25c4344f73116a4887fdda15d7757527009f58426d9babebfe477c0551fd [INFO] running `"docker" "start" "-a" "84ad25c4344f73116a4887fdda15d7757527009f58426d9babebfe477c0551fd"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1861:5 [INFO] [stderr] | [INFO] [stderr] 1861 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1934:5 [INFO] [stderr] | [INFO] [stderr] 1934 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1947:5 [INFO] [stderr] | [INFO] [stderr] 1947 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:1995:5 [INFO] [stderr] | [INFO] [stderr] 1995 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:2009:5 [INFO] [stderr] | [INFO] [stderr] 2009 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around block return value [INFO] [stderr] --> /opt/rustwide/target/debug/build/mamba-c5b6974c43856231/out/parser/grammar.rs:2216:5 [INFO] [stderr] | [INFO] [stderr] 2216 | (__0) [INFO] [stderr] | ^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/ast/construct.rs:188:13 [INFO] [stderr] | [INFO] [stderr] 188 | let mut t = check_arms(&from, arms, &states, &alphabet)?; [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 7 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.21s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/mamba-6af79a19b867f9e7 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "84ad25c4344f73116a4887fdda15d7757527009f58426d9babebfe477c0551fd"` [INFO] running `"docker" "rm" "-f" "84ad25c4344f73116a4887fdda15d7757527009f58426d9babebfe477c0551fd"` [INFO] [stdout] 84ad25c4344f73116a4887fdda15d7757527009f58426d9babebfe477c0551fd