[INFO] cloning repository https://github.com/mohnishaggarwal/snake-compiler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mohnishaggarwal/snake-compiler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohnishaggarwal%2Fsnake-compiler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohnishaggarwal%2Fsnake-compiler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 785ebe19eaeef4c57b6df8755bf2fa0e96dbceaf
[INFO] building mohnishaggarwal/snake-compiler against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmohnishaggarwal%2Fsnake-compiler" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mohnishaggarwal/snake-compiler on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mohnishaggarwal/snake-compiler
[INFO] finished tweaking git repo https://github.com/mohnishaggarwal/snake-compiler
[INFO] tweaked toml for git repo https://github.com/mohnishaggarwal/snake-compiler written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mohnishaggarwal/snake-compiler 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c67a879e79f44f41e7e3ff1022c45f44f55e14f70b7b56173fd1c253b1099352
[INFO] running `Command { std: "docker" "start" "-a" "c67a879e79f44f41e7e3ff1022c45f44f55e14f70b7b56173fd1c253b1099352", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c67a879e79f44f41e7e3ff1022c45f44f55e14f70b7b56173fd1c253b1099352", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c67a879e79f44f41e7e3ff1022c45f44f55e14f70b7b56173fd1c253b1099352", kill_on_drop: false }`
[INFO] [stdout] c67a879e79f44f41e7e3ff1022c45f44f55e14f70b7b56173fd1c253b1099352
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 137d23a63edcd95bd3a2e5562b56871e6677de9f373c552f3e257ad0e1a39769
[INFO] running `Command { std: "docker" "start" "-a" "137d23a63edcd95bd3a2e5562b56871e6677de9f373c552f3e257ad0e1a39769", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling string_cache v0.8.4
[INFO] [stderr]    Compiling petgraph v0.6.2
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling lalrpop-util v0.19.8
[INFO] [stderr]    Compiling lalrpop v0.19.8
[INFO] [stderr]    Compiling snake v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.91s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lalrpop v0.19.8
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "137d23a63edcd95bd3a2e5562b56871e6677de9f373c552f3e257ad0e1a39769", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "137d23a63edcd95bd3a2e5562b56871e6677de9f373c552f3e257ad0e1a39769", kill_on_drop: false }`
[INFO] [stdout] 137d23a63edcd95bd3a2e5562b56871e6677de9f373c552f3e257ad0e1a39769
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15feff740fc19cef40f6718ef817f1f4d0a6cc2e7f9145184bd6637200d29f76
[INFO] running `Command { std: "docker" "start" "-a" "15feff740fc19cef40f6718ef817f1f4d0a6cc2e7f9145184bd6637200d29f76", kill_on_drop: false }`
[INFO] [stderr]    Compiling snake v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `mk_test`
[INFO] [stdout]  --> tests/examples.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | macro_rules! mk_test {
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `mk_fail_test`
[INFO] [stdout]   --> tests/examples.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 | macro_rules! mk_fail_test {
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> tests/examples.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 |   let path = Path::new(&p_name);
[INFO] [stdout]    |       ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_example_file` is never used
[INFO] [stdout]   --> tests/examples.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn test_example_file(f: &str, expected_str: &str) -> std::io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_example_fail` is never used
[INFO] [stdout]   --> tests/examples.rs:41:4
[INFO] [stdout]    |
[INFO] [stdout] 41 | fn test_example_fail(f: &str, includes: &str) -> std::io::Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> tests/examples.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 |   let path = Path::new(&p_name);
[INFO] [stdout]    |       ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> tests/examples.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 |   let path = Path::new(&p_name);
[INFO] [stdout]    |       ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `diamond_isPrime` should have a snake case name
[INFO] [stdout]    --> tests/integration_tests.rs:498:3
[INFO] [stdout]     |
[INFO] [stdout] 498 |   diamond_isPrime,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `diamond_is_prime`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `diamond_notMultiplesOf` should have a snake case name
[INFO] [stdout]    --> tests/integration_tests.rs:529:3
[INFO] [stdout]     |
[INFO] [stdout] 529 |   diamond_notMultiplesOf,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `diamond_not_multiples_of`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.24s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lalrpop v0.19.8
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "15feff740fc19cef40f6718ef817f1f4d0a6cc2e7f9145184bd6637200d29f76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15feff740fc19cef40f6718ef817f1f4d0a6cc2e7f9145184bd6637200d29f76", kill_on_drop: false }`
[INFO] [stdout] 15feff740fc19cef40f6718ef817f1f4d0a6cc2e7f9145184bd6637200d29f76