[INFO] cloning repository https://github.com/vluzko/Grace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vluzko/Grace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvluzko%2FGrace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvluzko%2FGrace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dac465ee73041ca260963847a8e4ddb82e043151
[INFO] checking vluzko/Grace against master#0d56e340472882fa673d4b98d0802b9a799879d0 for pr-101692
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvluzko%2FGrace" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vluzko/Grace on toolchain 0d56e340472882fa673d4b98d0802b9a799879d0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vluzko/Grace
[INFO] finished tweaking git repo https://github.com/vluzko/Grace
[INFO] tweaked toml for git repo https://github.com/vluzko/Grace written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async_once v0.2.6
[INFO] [stderr]   Downloaded bytecount v0.6.3
[INFO] [stderr]   Downloaded output_vt100 v0.1.3
[INFO] [stderr]   Downloaded cached_proc_macro v0.15.0
[INFO] [stderr]   Downloaded pretty_assertions v1.3.0
[INFO] [stderr]   Downloaded cached v0.39.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:e92e462e59ac3446a933540fd361ddeb5362c86f92d432d6a560a917a465022e" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ed6199bb0bd21313894bbeab6c2b50ef5b19015388c60a0eeac79b173a5ecc6
[INFO] running `Command { std: "docker" "start" "-a" "1ed6199bb0bd21313894bbeab6c2b50ef5b19015388c60a0eeac79b173a5ecc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ed6199bb0bd21313894bbeab6c2b50ef5b19015388c60a0eeac79b173a5ecc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ed6199bb0bd21313894bbeab6c2b50ef5b19015388c60a0eeac79b173a5ecc6", kill_on_drop: false }`
[INFO] [stdout] 1ed6199bb0bd21313894bbeab6c2b50ef5b19015388c60a0eeac79b173a5ecc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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:e92e462e59ac3446a933540fd361ddeb5362c86f92d432d6a560a917a465022e" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 852d7e7c6ff7f829070e33a449a81d3a00e967e99ecf87e95b7af3c704817258
[INFO] running `Command { std: "docker" "start" "-a" "852d7e7c6ff7f829070e33a449a81d3a00e967e99ecf87e95b7af3c704817258", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling async-trait v0.1.57
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling thiserror v1.0.35
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling cached_proc_macro_types v0.1.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking quick-error v2.0.1
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking async_once v0.2.6
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking bytecount v0.6.3
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling tokio v1.21.1
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking itertools v0.10.4
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking petgraph v0.6.2
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking futures v0.3.24
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking proptest v1.0.0
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.35
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling cached_proc_macro v0.15.0
[INFO] [stderr]     Checking cached v0.39.0
[INFO] [stderr]     Checking grace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/expression.rs:475:25
[INFO] [stdout]     |
[INFO] [stdout] 475 |                         _ => panic!(),
[INFO] [stdout]     |                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/expression.rs:475:25
[INFO] [stdout]     |
[INFO] [stdout] 475 |                         _ => panic!(),
[INFO] [stdout]     |                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checking/scope.rs:202:13
[INFO] [stdout]     |
[INFO] [stdout] 202 |             _ => panic!()
[INFO] [stdout]     |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checking/scope.rs:202:13
[INFO] [stdout]     |
[INFO] [stdout] 202 |             _ => panic!()
[INFO] [stdout]     |             ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/grace_error.rs:107:18
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn add(self, other: Self) -> Self {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/grace_error.rs:107:18
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn add(self, other: Self) -> Self {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ast_to_context` is never used
[INFO] [stdout]    --> src/compiler_layers.rs:486:16
[INFO] [stdout]     |
[INFO] [stdout] 486 | pub (crate) fn ast_to_context<T>(mut input: Node<T>, start_context: Option<Context>) -> (Node<T>, Context)
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ast_to_type_rewrites` is never used
[INFO] [stdout]    --> src/compiler_layers.rs:503:16
[INFO] [stdout]     |
[INFO] [stdout] 503 | pub (crate) fn ast_to_type_rewrites<T>(input: Node<T>, start_context: Option<Context>) -> (Node<T>, Context)
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_function_to_context` is never used
[INFO] [stdout]   --> src/test_utils.rs:10:15
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub(crate) fn add_function_to_context(
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_struct_to_context` is never used
[INFO] [stdout]   --> src/test_utils.rs:37:15
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub(crate) fn add_struct_to_context(
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_identifier_to_context` is never used
[INFO] [stdout]   --> src/test_utils.rs:62:15
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub(crate) fn add_identifier_to_context(
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unary_trait` is never used
[INFO] [stdout]   --> src/type_checking/context.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn unary_trait(trait_name: Identifier, method_name: Identifier) -> Trait {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `builtin_unary_traits` is never used
[INFO] [stdout]   --> src/type_checking/context.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn builtin_unary_traits() -> HashMap<Identifier, Trait> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `check_against_expected` is never used
[INFO] [stdout]   --> tests/utils/mod.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn check_against_expected(subfolder: &str) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unary_trait` is never used
[INFO] [stdout]   --> src/type_checking/context.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn unary_trait(trait_name: Identifier, method_name: Identifier) -> Trait {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `builtin_unary_traits` is never used
[INFO] [stdout]   --> src/type_checking/context.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn builtin_unary_traits() -> HashMap<Identifier, Trait> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.72s
[INFO] running `Command { std: "docker" "inspect" "852d7e7c6ff7f829070e33a449a81d3a00e967e99ecf87e95b7af3c704817258", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "852d7e7c6ff7f829070e33a449a81d3a00e967e99ecf87e95b7af3c704817258", kill_on_drop: false }`
[INFO] [stdout] 852d7e7c6ff7f829070e33a449a81d3a00e967e99ecf87e95b7af3c704817258