[INFO] cloning repository https://github.com/alexshadley/Spruce
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexshadley/Spruce" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexshadley%2FSpruce", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexshadley%2FSpruce'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34d1e48c4d2cc441bc4e105eafc71dbda9f83543
[INFO] checking alexshadley/Spruce against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexshadley%2FSpruce" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexshadley/Spruce on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alexshadley/Spruce
[INFO] finished tweaking git repo https://github.com/alexshadley/Spruce
[INFO] tweaked toml for git repo https://github.com/alexshadley/Spruce written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/alexshadley/Spruce already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4ff202955dbdb7515ed0eacc9b6231a18e76589f49977ebe95225893333990bc
[INFO] running `Command { std: "docker" "start" "-a" "4ff202955dbdb7515ed0eacc9b6231a18e76589f49977ebe95225893333990bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ff202955dbdb7515ed0eacc9b6231a18e76589f49977ebe95225893333990bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ff202955dbdb7515ed0eacc9b6231a18e76589f49977ebe95225893333990bc", kill_on_drop: false }`
[INFO] [stdout] 4ff202955dbdb7515ed0eacc9b6231a18e76589f49977ebe95225893333990bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f53e1ba386d09f94562c63c14c0aa90a0724d7aadd623f2fef76a389367c97b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6f53e1ba386d09f94562c63c14c0aa90a0724d7aadd623f2fef76a389367c97b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v1.0.26
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling lexical-core v0.6.7
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking spruce v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Span`
[INFO] [stdout]  --> src/typecheck.rs:7:31
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::parser::{NodeInfo, Span};
[INFO] [stdout]   |                               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/name_analysis.rs:613:9
[INFO] [stdout]     |
[INFO] [stdout] 613 |         _ => unimplemented!()
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0004]: non-exhaustive patterns: `&Access(_, _)` not covered
[INFO] [stdout]    --> src/codegen.rs:258:11
[INFO] [stdout]     |
[INFO] [stdout] 258 |       match &expr.val {
[INFO] [stdout]     |             ^^^^^^^^^ pattern `&Access(_, _)` not covered
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/name_analysis.rs:34:1
[INFO] [stdout]     |
[INFO] [stdout] 34  | / pub enum Expr {
[INFO] [stdout] 35  | |     Add(Box<ExprNode>, Box<ExprNode>),
[INFO] [stdout] 36  | |     Mult(Box<ExprNode>, Box<ExprNode>),
[INFO] [stdout] 37  | |     Subt(Box<ExprNode>, Box<ExprNode>),
[INFO] [stdout] ...   |
[INFO] [stdout] 55  | |     Access(Box<ExprNode>, String)
[INFO] [stdout]     | |     ------ not covered
[INFO] [stdout] 56  | | }
[INFO] [stdout]     | |_- `name_analysis::Expr` defined here
[INFO] [stdout]     |
[INFO] [stdout]     = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
[INFO] [stdout]     = note: the matched value is of type `&name_analysis::Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/codegen.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn gen_type(prog: &Prog, env: &Environment, t: &ADT) -> String {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `output` is never read
[INFO] [stdout]    --> src/codegen.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 164 |     let mut output = String::from("");
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> src/codegen.rs:361:25
[INFO] [stdout]     |
[INFO] [stdout] 361 |         Expr::StructVal(fields) => {
[INFO] [stdout]     |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/name_analysis.rs:613:9
[INFO] [stdout]     |
[INFO] [stdout] 613 |         _ => unimplemented!()
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0004]: non-exhaustive patterns: `&Access(_, _)` not covered
[INFO] [stdout]    --> src/codegen.rs:258:11
[INFO] [stdout]     |
[INFO] [stdout] 258 |       match &expr.val {
[INFO] [stdout]     |             ^^^^^^^^^ pattern `&Access(_, _)` not covered
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/name_analysis.rs:34:1
[INFO] [stdout]     |
[INFO] [stdout] 34  | / pub enum Expr {
[INFO] [stdout] 35  | |     Add(Box<ExprNode>, Box<ExprNode>),
[INFO] [stdout] 36  | |     Mult(Box<ExprNode>, Box<ExprNode>),
[INFO] [stdout] 37  | |     Subt(Box<ExprNode>, Box<ExprNode>),
[INFO] [stdout] ...   |
[INFO] [stdout] 55  | |     Access(Box<ExprNode>, String)
[INFO] [stdout]     | |     ------ not covered
[INFO] [stdout] 56  | | }
[INFO] [stdout]     | |_- `name_analysis::Expr` defined here
[INFO] [stdout]     |
[INFO] [stdout]     = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
[INFO] [stdout]     = note: the matched value is of type `&name_analysis::Expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env`
[INFO] [stdout]   --> src/codegen.rs:27:26
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn gen_type(prog: &Prog, env: &Environment, t: &ADT) -> String {
[INFO] [stdout]    |                          ^^^ help: if this is intentional, prefix it with an underscore: `_env`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `output` is never read
[INFO] [stdout]    --> src/codegen.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 164 |     let mut output = String::from("");
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> src/codegen.rs:361:25
[INFO] [stdout]     |
[INFO] [stdout] 361 |         Expr::StructVal(fields) => {
[INFO] [stdout]     |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:571:23
[INFO] [stdout]     |
[INFO] [stdout] 571 | fn to_type_annotation(mut p: Pair<Rule>, file_name: &String) -> TypeAnnotationNode {
[INFO] [stdout]     |                       ----^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:593:17
[INFO] [stdout]     |
[INFO] [stdout] 593 |             let mut children = p.into_inner();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:615:12
[INFO] [stdout]     |
[INFO] [stdout] 615 | fn to_args(mut args: Pair<Rule>, file_name: &String) -> (Vec<(String, Option<TypeAnnotationNode>)>, Option<TypeAnnotationNode>) {
[INFO] [stdout]     |            ----^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:645:15
[INFO] [stdout]     |
[INFO] [stdout] 645 | fn to_interop(mut p: Pair<Rule>, file_name: &String) -> InteropFuncNode {
[INFO] [stdout]     |               ----^
[INFO] [stdout]     |               |
[INFO] [stdout]     |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:666:12
[INFO] [stdout]     |
[INFO] [stdout] 666 | fn to_func(mut p: Pair<Rule>, file_name: &String) -> FuncNode {
[INFO] [stdout]     |            ----^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/import_analysis.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |             let mut mod_deps = dependents.get_mut(dependency).expect("unreachable");
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/import_analysis.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |             let mut dep_count = dependencies.get_mut(dependent).expect("unreachable");
[INFO] [stdout]    |                 ----^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/name_analysis.rs:1022:13
[INFO] [stdout]      |
[INFO] [stdout] 1022 |         let mut adt = self.types.get_mut(data_type).expect("unreachable");
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:571:23
[INFO] [stdout]     |
[INFO] [stdout] 571 | fn to_type_annotation(mut p: Pair<Rule>, file_name: &String) -> TypeAnnotationNode {
[INFO] [stdout]     |                       ----^
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:593:17
[INFO] [stdout]     |
[INFO] [stdout] 593 |             let mut children = p.into_inner();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:615:12
[INFO] [stdout]     |
[INFO] [stdout] 615 | fn to_args(mut args: Pair<Rule>, file_name: &String) -> (Vec<(String, Option<TypeAnnotationNode>)>, Option<TypeAnnotationNode>) {
[INFO] [stdout]     |            ----^^^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:645:15
[INFO] [stdout]     |
[INFO] [stdout] 645 | fn to_interop(mut p: Pair<Rule>, file_name: &String) -> InteropFuncNode {
[INFO] [stdout]     |               ----^
[INFO] [stdout]     |               |
[INFO] [stdout]     |               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/parser.rs:666:12
[INFO] [stdout]     |
[INFO] [stdout] 666 | fn to_func(mut p: Pair<Rule>, file_name: &String) -> FuncNode {
[INFO] [stdout]     |            ----^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/import_analysis.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |             let mut mod_deps = dependents.get_mut(dependency).expect("unreachable");
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/import_analysis.rs:50:17
[INFO] [stdout]    |
[INFO] [stdout] 50 |             let mut dep_count = dependencies.get_mut(dependent).expect("unreachable");
[INFO] [stdout]    |                 ----^^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0004`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spruce`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/name_analysis.rs:1022:13
[INFO] [stdout]      |
[INFO] [stdout] 1022 |         let mut adt = self.types.get_mut(data_type).expect("unreachable");
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0004`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6f53e1ba386d09f94562c63c14c0aa90a0724d7aadd623f2fef76a389367c97b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f53e1ba386d09f94562c63c14c0aa90a0724d7aadd623f2fef76a389367c97b", kill_on_drop: false }`
[INFO] [stdout] 6f53e1ba386d09f94562c63c14c0aa90a0724d7aadd623f2fef76a389367c97b
