[INFO] cloning repository https://github.com/hukumka/interactives
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hukumka/interactives" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhukumka%2Finteractives", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhukumka%2Finteractives'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8fd54ec762fcf4aece15bc0be52234f8fbbf392
[INFO] testing hukumka/interactives against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhukumka%2Finteractives" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hukumka/interactives on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hukumka/interactives
[INFO] finished tweaking git repo https://github.com/hukumka/interactives
[INFO] tweaked toml for git repo https://github.com/hukumka/interactives written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0aa35179ecdace67c12fbaa61972c2cf5909783fe53ebefffff3b02db4b86965
[INFO] running `Command { std: "docker" "start" "-a" "0aa35179ecdace67c12fbaa61972c2cf5909783fe53ebefffff3b02db4b86965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0aa35179ecdace67c12fbaa61972c2cf5909783fe53ebefffff3b02db4b86965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aa35179ecdace67c12fbaa61972c2cf5909783fe53ebefffff3b02db4b86965", kill_on_drop: false }`
[INFO] [stdout] 0aa35179ecdace67c12fbaa61972c2cf5909783fe53ebefffff3b02db4b86965
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b3c9a9d4e1074d45ae75d7eeeacc513ff9a85aee2fa141624c1fbb8ed41b44c
[INFO] running `Command { std: "docker" "start" "-a" "7b3c9a9d4e1074d45ae75d7eeeacc513ff9a85aee2fa141624c1fbb8ed41b44c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling hamt-rs v0.3.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling handlebars v1.1.0
[INFO] [stderr]    Compiling interactive_c v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.87s
[INFO] running `Command { std: "docker" "inspect" "7b3c9a9d4e1074d45ae75d7eeeacc513ff9a85aee2fa141624c1fbb8ed41b44c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b3c9a9d4e1074d45ae75d7eeeacc513ff9a85aee2fa141624c1fbb8ed41b44c", kill_on_drop: false }`
[INFO] [stdout] 7b3c9a9d4e1074d45ae75d7eeeacc513ff9a85aee2fa141624c1fbb8ed41b44c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9211172e9f845995fd4f54581f77a753ef94c7f8d60bcdf82aea0fe16a8d6d60
[INFO] running `Command { std: "docker" "start" "-a" "9211172e9f845995fd4f54581f77a753ef94c7f8d60bcdf82aea0fe16a8d6d60", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling interactive_c v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/syntax_tree.rs:854:17
[INFO] [stdout]      |
[INFO] [stdout] 854  |             let mut $walker_name = _tree.walker();
[INFO] [stdout]      |                 ----^^^^^^^^^^^^
[INFO] [stdout]      |                 |
[INFO] [stdout]      |                 help: remove this `mut`
[INFO] [stdout] ...
[INFO] [stdout] 1398 |         new_walker!{let mut walker = "int x=0; int x(int a){return a + 4; for(int i=0; i<a; ++i) a += 3 * 4;}";}
[INFO] [stdout]      |         -------------------------------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout]      = note: this warning originates in the macro `new_walker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.91s
[INFO] running `Command { std: "docker" "inspect" "9211172e9f845995fd4f54581f77a753ef94c7f8d60bcdf82aea0fe16a8d6d60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9211172e9f845995fd4f54581f77a753ef94c7f8d60bcdf82aea0fe16a8d6d60", kill_on_drop: false }`
[INFO] [stdout] 9211172e9f845995fd4f54581f77a753ef94c7f8d60bcdf82aea0fe16a8d6d60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] be45796ff391c2ceb8fe26f7986806eef4cbb7d88be213f29090d4ebc3dd4914
[INFO] running `Command { std: "docker" "start" "-a" "be45796ff391c2ceb8fe26f7986806eef4cbb7d88be213f29090d4ebc3dd4914", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 16 tests
[INFO] [stderr]     --> src/syntax_tree.rs:854:17
[INFO] [stdout] test lexer::tests::test_lexing_bracket ... ok
[INFO] [stderr]      |
[INFO] [stdout] test bracket_tree::tests::test_new_bracket_tree ... ok
[INFO] [stderr] 854  |             let mut $walker_name = _tree.walker();
[INFO] [stdout] test lexer::tests::test_lexing_name ... ok
[INFO] [stderr]      |                 ----^^^^^^^^^^^^
[INFO] [stdout] test syntax_tree::tests::bench_parse ... ok
[INFO] [stderr]      |                 |
[INFO] [stdout] test lexer::tests::test_lexing_operator ... ok
[INFO] [stderr]      |                 help: remove this `mut`
[INFO] [stdout] test bracket_tree::tests::test_walker ... ok
[INFO] [stderr] ...
[INFO] [stderr] 1398 |         new_walker!{let mut walker = "int x=0; int x(int a){return a + 4; for(int i=0; i<a; ++i) a += 3 * 4;}";}
[INFO] [stderr]      |         -------------------------------------------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr]      = note: this warning originates in the macro `new_walker` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `interactive_c` (bin "interactive_c" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/interactive_c-9a0b18169a5cec6a)
[INFO] [stdout] test syntax_tree::tests::test_function_pointer_variable_parse ... ok
[INFO] [stdout] test syntax_tree::tests::test_expression_base_parse ... ok
[INFO] [stdout] test syntax_tree::tests::test_expression_parse_simple ... ok
[INFO] [stdout] test bracket_tree::tests::bench_bracket_tree ... ok
[INFO] [stdout] test syntax_tree::tests::test_statement_parse ... ok
[INFO] [stdout] test syntax_tree::tests::test_root_parse ... ok
[INFO] [stdout] test lexer::tests::bench_tokenize ... ok
[INFO] [stdout] test syntax_tree::tests::test_expression_parse ... ok
[INFO] [stdout] test lexer::tests::test_mixed ... ok
[INFO] [stdout] test syntax_tree::tests::test_parse_block ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "be45796ff391c2ceb8fe26f7986806eef4cbb7d88be213f29090d4ebc3dd4914", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be45796ff391c2ceb8fe26f7986806eef4cbb7d88be213f29090d4ebc3dd4914", kill_on_drop: false }`
[INFO] [stdout] be45796ff391c2ceb8fe26f7986806eef4cbb7d88be213f29090d4ebc3dd4914