[INFO] updating cached repository https://github.com/remexre/evaltrees
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8746e47ca4b8875f5f822666e8571283adb48a3a
[INFO] checking remexre/evaltrees against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fremexre%2Fevaltrees" "/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/remexre/evaltrees on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/remexre/evaltrees
[INFO] removed workspace from git repo https://github.com/remexre/evaltrees
[INFO] finished tweaking git repo https://github.com/remexre/evaltrees
[INFO] tweaked toml for git repo https://github.com/remexre/evaltrees written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/remexre/evaltrees already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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=forbid" "-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" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9a21f86a4736d39275543ed8d6cabf956fcac5fb9fb0e344a3d15a9e3aa07fef
[INFO] running `"docker" "start" "-a" "9a21f86a4736d39275543ed8d6cabf956fcac5fb9fb0e344a3d15a9e3aa07fef"`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling lalrpop-util v0.16.3
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling block-padding v0.1.5
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking linked_hash_set v0.1.3
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]    Compiling ena v0.11.0
[INFO] [stderr]     Checking symbol v0.1.7
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[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 string_cache v0.7.5
[INFO] [stderr]    Compiling sha2 v0.8.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling display_attr v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]    Compiling evaltrees v0.2.0-pre (/opt/rustwide/workdir)
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:148:39
[INFO] [stderr]     |
[INFO] [stderr] 148 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:148:43
[INFO] [stderr]     |
[INFO] [stderr] 148 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_2` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:148:47
[INFO] [stderr]     |
[INFO] [stderr] 148 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                               ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:152:27
[INFO] [stderr]     |
[INFO] [stderr] 152 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]     |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:156:35
[INFO] [stderr]     |
[INFO] [stderr] 156 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                   ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:156:39
[INFO] [stderr]     |
[INFO] [stderr] 156 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_2` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:156:43
[INFO] [stderr]     |
[INFO] [stderr] 156 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:160:27
[INFO] [stderr]     |
[INFO] [stderr] 160 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]     |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:286:27
[INFO] [stderr]     |
[INFO] [stderr] 286 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]     |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:12:39
[INFO] [stderr]    |
[INFO] [stderr] 12 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:12:43
[INFO] [stderr]    |
[INFO] [stderr] 12 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_2` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:12:47
[INFO] [stderr]    |
[INFO] [stderr] 12 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                               ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]    |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:20:35
[INFO] [stderr]    |
[INFO] [stderr] 20 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                   ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:20:39
[INFO] [stderr]    |
[INFO] [stderr] 20 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_2` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:20:43
[INFO] [stderr]    |
[INFO] [stderr] 20 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:24:27
[INFO] [stderr]    |
[INFO] [stderr] 24 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]    |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:28:28
[INFO] [stderr]    |
[INFO] [stderr] 28 |     #[display(fmt = "${}", _0)]
[INFO] [stderr]    |                            ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]  --> src/typeck/subst.rs:9:24
[INFO] [stderr]   |
[INFO] [stderr] 9 | #[display(fmt = "?{}", _0)]
[INFO] [stderr]   |                        ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/typeck/ty.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 |     #[display(fmt = "({} -> {})", _0, _1)]
[INFO] [stderr]    |                                   ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]   --> src/typeck/ty.rs:13:39
[INFO] [stderr]    |
[INFO] [stderr] 13 |     #[display(fmt = "({} -> {})", _0, _1)]
[INFO] [stderr]    |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/typeck/ty.rs:21:34
[INFO] [stderr]    |
[INFO] [stderr] 21 |     #[display(fmt = "({} list)", _0)]
[INFO] [stderr]    |                                  ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/typeck/ty.rs:25:27
[INFO] [stderr]    |
[INFO] [stderr] 25 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]    |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> /opt/rustwide/target/debug/build/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11628:5
[INFO] [stderr]       |
[INFO] [stderr] 11628 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11639:5
[INFO] [stderr]       |
[INFO] [stderr] 11639 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11650:5
[INFO] [stderr]       |
[INFO] [stderr] 11650 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11661:5
[INFO] [stderr]       |
[INFO] [stderr] 11661 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11841:5
[INFO] [stderr]       |
[INFO] [stderr] 11841 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11907:5
[INFO] [stderr]       |
[INFO] [stderr] 11907 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11944:5
[INFO] [stderr]       |
[INFO] [stderr] 11944 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11994:5
[INFO] [stderr]       |
[INFO] [stderr] 11994 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:12017:5
[INFO] [stderr]       |
[INFO] [stderr] 12017 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:12106:5
[INFO] [stderr]       |
[INFO] [stderr] 12106 |     (__0)
[INFO] [stderr]       |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/repl.rs:14:40
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:148:39
[INFO] [stderr]     |
[INFO] [stderr] 148 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:148:43
[INFO] [stderr]     |
[INFO] [stderr] 148 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_2` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:148:47
[INFO] [stderr]     |
[INFO] [stderr] 148 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                               ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:152:27
[INFO] [stderr]     |
[INFO] [stderr] 152 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]     |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:156:35
[INFO] [stderr]     |
[INFO] [stderr] 156 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                   ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:156:39
[INFO] [stderr]     |
[INFO] [stderr] 156 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_2` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:156:43
[INFO] [stderr]     |
[INFO] [stderr] 156 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]     |                                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:160:27
[INFO] [stderr]     |
[INFO] [stderr] 160 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]     |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]    --> src/ast/mod.rs:286:27
[INFO] [stderr]     |
[INFO] [stderr] 286 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]     |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:12:39
[INFO] [stderr]    |
[INFO] [stderr] 12 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:12:43
[INFO] [stderr]    |
[INFO] [stderr] 12 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_2` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:12:47
[INFO] [stderr]    |
[INFO] [stderr] 12 |     #[display(fmt = "If({}, {}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                               ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]    |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:20:35
[INFO] [stderr]    |
[INFO] [stderr] 20 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                   ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:20:39
[INFO] [stderr]    |
[INFO] [stderr] 20 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_2` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:20:43
[INFO] [stderr]    |
[INFO] [stderr] 20 |     #[display(fmt = "{}({}, {})", _0, _1, _2)]
[INFO] [stderr]    |                                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:24:27
[INFO] [stderr]    |
[INFO] [stderr] 24 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]    |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/eval/lazy/expr.rs:28:28
[INFO] [stderr]    |
[INFO] [stderr] 28 |     #[display(fmt = "${}", _0)]
[INFO] [stderr]    |                            ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]  --> src/typeck/subst.rs:9:24
[INFO] [stderr]   |
[INFO] [stderr] 9 | #[display(fmt = "?{}", _0)]
[INFO] [stderr]   |                        ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/typeck/ty.rs:13:35
[INFO] [stderr]    |
[INFO] [stderr] 13 |     #[display(fmt = "({} -> {})", _0, _1)]
[INFO] [stderr]    |                                   ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_1` in this scope
[INFO] [stderr]   --> src/typeck/ty.rs:13:39
[INFO] [stderr]    |
[INFO] [stderr] 13 |     #[display(fmt = "({} -> {})", _0, _1)]
[INFO] [stderr]    |                                       ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/typeck/ty.rs:21:34
[INFO] [stderr]    |
[INFO] [stderr] 21 |     #[display(fmt = "({} list)", _0)]
[INFO] [stderr]    |                                  ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `_0` in this scope
[INFO] [stderr]   --> src/typeck/ty.rs:25:27
[INFO] [stderr]    |
[INFO] [stderr] 25 |     #[display(fmt = "{}", _0)]
[INFO] [stderr]    |                           ^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> /opt/rustwide/target/debug/build/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11628:5
[INFO] [stderr]       |
[INFO] [stderr] 11628 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11639:5
[INFO] [stderr]       |
[INFO] [stderr] 11639 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11650:5
[INFO] [stderr]       |
[INFO] [stderr] 11650 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11661:5
[INFO] [stderr]       |
[INFO] [stderr] 11661 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11841:5
[INFO] [stderr]       |
[INFO] [stderr] 11841 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11907:5
[INFO] [stderr]       |
[INFO] [stderr] 11907 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11944:5
[INFO] [stderr]       |
[INFO] [stderr] 11944 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:11994:5
[INFO] [stderr]       |
[INFO] [stderr] 11994 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:12017:5
[INFO] [stderr]       |
[INFO] [stderr] 12017 |     (__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/evaltrees-841067cbabc84fb8/out/cst/parser/grammar.rs:12106:5
[INFO] [stderr]       |
[INFO] [stderr] 12106 |     (__0)
[INFO] [stderr]       |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/repl.rs:14:40
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Evaluator(fn(Vec<Decl<()>>) -> Box<Evaluator>),
[INFO] [stderr]    |                                        ^^^^^^^^^ help: use `dyn`: `dyn Evaluator`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 23 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `evaltrees`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 23 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `evaltrees`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9a21f86a4736d39275543ed8d6cabf956fcac5fb9fb0e344a3d15a9e3aa07fef"`
[INFO] running `"docker" "rm" "-f" "9a21f86a4736d39275543ed8d6cabf956fcac5fb9fb0e344a3d15a9e3aa07fef"`
[INFO] [stdout] 9a21f86a4736d39275543ed8d6cabf956fcac5fb9fb0e344a3d15a9e3aa07fef