[INFO] cloning repository https://github.com/adamAndMath/AlgebraicManipulatorRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adamAndMath/AlgebraicManipulatorRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FadamAndMath%2FAlgebraicManipulatorRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FadamAndMath%2FAlgebraicManipulatorRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 04fd0cd94dd8caa97d6b2b7bb934b768f39b5a66
[INFO] checking adamAndMath/AlgebraicManipulatorRust against master#ab26b175979ee7b2cb3302dce204b99df96f7efb for pr-157696
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FadamAndMath%2FAlgebraicManipulatorRust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/adamAndMath/AlgebraicManipulatorRust
[INFO] finished tweaking git repo https://github.com/adamAndMath/AlgebraicManipulatorRust
[INFO] tweaked toml for git repo https://github.com/adamAndMath/AlgebraicManipulatorRust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/adamAndMath/AlgebraicManipulatorRust on toolchain ab26b175979ee7b2cb3302dce204b99df96f7efb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab26b175979ee7b2cb3302dce204b99df96f7efb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/adamAndMath/AlgebraicManipulatorRust 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" "+ab26b175979ee7b2cb3302dce204b99df96f7efb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `algebra` (manifest) generated 1 warning
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_generator v2.0.0
[INFO] [stderr]   Downloaded sha-1 v0.7.0
[INFO] [stderr]   Downloaded pest_derive v2.0.1
[INFO] [stderr]   Downloaded pest_meta v2.0.3
[INFO] [stderr]   Downloaded proc-macro2 v0.4.20
[INFO] [stderr]   Downloaded digest v0.7.6
[INFO] [stderr]   Downloaded pest v2.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e7c332f5daf85b4c0c313d4080d25e644ac3befcf3021bf9a16097bc4edd2d5d
[INFO] running `Command { std: "docker" "start" "e7c332f5daf85b4c0c313d4080d25e644ac3befcf3021bf9a16097bc4edd2d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e7c332f5daf85b4c0c313d4080d25e644ac3befcf3021bf9a16097bc4edd2d5d" "/opt/rustwide/cargo-home/bin/cargo" "+ab26b175979ee7b2cb3302dce204b99df96f7efb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7c332f5daf85b4c0c313d4080d25e644ac3befcf3021bf9a16097bc4edd2d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e7c332f5daf85b4c0c313d4080d25e644ac3befcf3021bf9a16097bc4edd2d5d" "/opt/rustwide/cargo-home/bin/cargo" "+ab26b175979ee7b2cb3302dce204b99df96f7efb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `algebra` (manifest) generated 1 warning
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]     Checking pest v2.0.1
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling pest_meta v2.0.3
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]    Compiling pest_derive v2.0.1
[INFO] [stderr]     Checking algebra v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ErrID`, `SetLocal`, and `TypeCheck`
[INFO] [stdout]   --> src/id/mod.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         ErrID,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 32 |         TypeCheck,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 33 |         SetLocal
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `type_id`
[INFO] [stdout]  --> src/macros/id/ty.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | macro_rules! type_id {
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `type_id_vec`
[INFO] [stdout]  --> src/macros/id/ty.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | macro_rules! type_id_vec {
[INFO] [stdout]   |              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `type_id_tuple`
[INFO] [stdout]   --> src/macros/id/ty.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 | macro_rules! type_id_tuple {
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `pattern_id`
[INFO] [stdout]  --> src/macros/id/pattern.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | macro_rules! pattern_id {
[INFO] [stdout]   |              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `pattern_id_tuple`
[INFO] [stdout]   --> src/macros/id/pattern.rs:10:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | macro_rules! pattern_id_tuple {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `exp_id`
[INFO] [stdout]  --> src/macros/id/exp.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | macro_rules! exp_id {
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `exp_id_tuple`
[INFO] [stdout]  --> src/macros/id/exp.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | macro_rules! exp_id_tuple {
[INFO] [stdout]   |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `range_contains` has been stable since 1.35.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(range_contains, box_patterns, transpose_result)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `transpose_result` has been stable since 1.33.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(range_contains, box_patterns, transpose_result)]
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:34:40
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn parse<'f, T: Parse<'f>>(pairs: &mut Iterator<Item = Pair<'f>>) -> T {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn parse<'f, T: Parse<'f>>(pairs: &mut dyn Iterator<Item = Pair<'f>>) -> T {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:38:44
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn parse_vec<'f, T: Parse<'f>>(pairs: &mut Iterator<Item = Pair<'f>>) -> Vec<T> {
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn parse_vec<'f, T: Parse<'f>>(pairs: &mut dyn Iterator<Item = Pair<'f>>) -> Vec<T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrID` and `SetLocal`
[INFO] [stdout]   --> src/id/mod.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         ErrID,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 32 |         TypeCheck,
[INFO] [stdout] 33 |         SetLocal
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `range_contains` has been stable since 1.35.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(range_contains, box_patterns, transpose_result)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `transpose_result` has been stable since 1.33.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:42
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(range_contains, box_patterns, transpose_result)]
[INFO] [stdout]   |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:34:40
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn parse<'f, T: Parse<'f>>(pairs: &mut Iterator<Item = Pair<'f>>) -> T {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn parse<'f, T: Parse<'f>>(pairs: &mut dyn Iterator<Item = Pair<'f>>) -> T {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:38:44
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn parse_vec<'f, T: Parse<'f>>(pairs: &mut Iterator<Item = Pair<'f>>) -> Vec<T> {
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn parse_vec<'f, T: Parse<'f>>(pairs: &mut dyn Iterator<Item = Pair<'f>>) -> Vec<T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `R` and `parse` are never used
[INFO] [stdout]   --> src/parser.rs:23:11
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub trait Parse<'f>: Sized {
[INFO] [stdout]    |           ----- associated items in this trait
[INFO] [stdout] 23 |     const R: Rule;
[INFO] [stdout]    |           ^
[INFO] [stdout] 24 |     fn parse(file: &'f str) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add` is never used
[INFO] [stdout]   --> src/envs/match_env.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<'a> MatchEnv<'a> {
[INFO] [stdout]    | --------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn add(&mut self, k: Exp, v: Exp) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `scope_exp` and `scope_truth` are never used
[INFO] [stdout]   --> src/envs/namespaces.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl<'a> Namespaces<'a> {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     pub fn scope_exp<'b, I: IntoIterator>(&'b self, names: &'a mut NameData, v: I) -> Namespaces<'b> where 'a: 'b, I::Item: AsRef<st...
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     pub fn scope_truth<'b, I: IntoIterator>(&'b self, names: &'a mut NameData, v: I) -> Namespaces<'b> where 'a: 'b, I::Item: AsRef<...
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `scope_truth` is never used
[INFO] [stdout]   --> src/envs/envs.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<'a> Envs<'a> {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn scope_truth<'b>(&'b self, v: Vec<TruthVal>) -> Envs<'b> where 'a: 'b {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `gen` is never used
[INFO] [stdout]   --> src/envs/type_val.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl TypeVal {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn gen(&self) -> &Vec<Variance> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/parser.rs:69:31
[INFO] [stdout]    |
[INFO] [stdout] 69 |             r => unreachable!(r),
[INFO] [stdout]    |                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 69 |             r => unreachable!("{}", r),
[INFO] [stdout]    |                               +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/parser.rs:80:31
[INFO] [stdout]    |
[INFO] [stdout] 80 |             r => unreachable!(r),
[INFO] [stdout]    |                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 80 |             r => unreachable!("{}", r),
[INFO] [stdout]    |                               +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/parser.rs:92:31
[INFO] [stdout]    |
[INFO] [stdout] 92 |             r => unreachable!(r),
[INFO] [stdout]    |                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 92 |             r => unreachable!("{}", r),
[INFO] [stdout]    |                               +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/predef.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn predef_space(data: &mut NameData) -> Namespaces {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn predef_space(data: &mut NameData) -> Namespaces<'_> {
[INFO] [stdout]    |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add` and `len` are never used
[INFO] [stdout]   --> src/envs/match_env.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl<'a> MatchEnv<'a> {
[INFO] [stdout]    | --------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn add(&mut self, k: Exp, v: Exp) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `scope_exp` and `scope_truth` are never used
[INFO] [stdout]   --> src/envs/namespaces.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl<'a> Namespaces<'a> {
[INFO] [stdout]    | ----------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     pub fn scope_exp<'b, I: IntoIterator>(&'b self, names: &'a mut NameData, v: I) -> Namespaces<'b> where 'a: 'b, I::Item: AsRef<st...
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     pub fn scope_truth<'b, I: IntoIterator>(&'b self, names: &'a mut NameData, v: I) -> Namespaces<'b> where 'a: 'b, I::Item: AsRef<...
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `scope_truth` is never used
[INFO] [stdout]   --> src/envs/envs.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<'a> Envs<'a> {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn scope_truth<'b>(&'b self, v: Vec<TruthVal>) -> Envs<'b> where 'a: 'b {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `gen` is never used
[INFO] [stdout]   --> src/envs/type_val.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl TypeVal {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub fn gen(&self) -> &Vec<Variance> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/parser.rs:69:31
[INFO] [stdout]    |
[INFO] [stdout] 69 |             r => unreachable!(r),
[INFO] [stdout]    |                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 69 |             r => unreachable!("{}", r),
[INFO] [stdout]    |                               +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/parser.rs:80:31
[INFO] [stdout]    |
[INFO] [stdout] 80 |             r => unreachable!(r),
[INFO] [stdout]    |                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 80 |             r => unreachable!("{}", r),
[INFO] [stdout]    |                               +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/parser.rs:92:31
[INFO] [stdout]    |
[INFO] [stdout] 92 |             r => unreachable!(r),
[INFO] [stdout]    |                               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `unreachable!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 92 |             r => unreachable!("{}", r),
[INFO] [stdout]    |                               +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/predef.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn predef_space(data: &mut NameData) -> Namespaces {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn predef_space(data: &mut NameData) -> Namespaces<'_> {
[INFO] [stdout]    |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.96s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 9`
[INFO] running `Command { std: "docker" "inspect" "e7c332f5daf85b4c0c313d4080d25e644ac3befcf3021bf9a16097bc4edd2d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7c332f5daf85b4c0c313d4080d25e644ac3befcf3021bf9a16097bc4edd2d5d", kill_on_drop: false }`
[INFO] [stdout] e7c332f5daf85b4c0c313d4080d25e644ac3befcf3021bf9a16097bc4edd2d5d
