[INFO] updating cached repository https://github.com/xttjsn/decaf-rust
[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] 092e306f7d6d5a15c2118b1114a53bb53b5fd46d
[INFO] checking xttjsn/decaf-rust against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxttjsn%2Fdecaf-rust" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xttjsn/decaf-rust on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/xttjsn/decaf-rust
[INFO] finished tweaking git repo https://github.com/xttjsn/decaf-rust
[INFO] tweaked toml for git repo https://github.com/xttjsn/decaf-rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/xttjsn/decaf-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d23189ec168b7ab0dca70cbee6e7b1bcc2f0fb73041cd2ed2086c3a8548990ca
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "d23189ec168b7ab0dca70cbee6e7b1bcc2f0fb73041cd2ed2086c3a8548990ca"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling lalr v0.0.2
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling redfa v0.0.2
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling llvm-sys v80.1.1
[INFO] [stderr]    Compiling plex v0.2.5
[INFO] [stderr]     Checking decaf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1158:13
[INFO] [stderr]      |
[INFO] [stderr] 1158 |             Ident(id) dim[d] => ArrayExpr {
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:624:13
[INFO] [stderr]     |
[INFO] [stderr] 624 |             Class Ident(id) supernode[s] LBrace members[ms] RBrace => ClassNode {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:630:13
[INFO] [stderr]     |
[INFO] [stderr] 630 |             Class Ident(id) LBrace members[ms] RBrace => ClassNode {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:680:13
[INFO] [stderr]     |
[INFO] [stderr] 680 |             modifiers[ms] Ident(id) formalargs[args] block[b] => Ctor {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1173:13
[INFO] [stderr]      |
[INFO] [stderr] 1173 |             BoolLit(b) => Literal {
[INFO] [stderr]      |             ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1177:13
[INFO] [stderr]      |
[INFO] [stderr] 1177 |             IntLit(i) => Literal {
[INFO] [stderr]      |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1181:13
[INFO] [stderr]      |
[INFO] [stderr] 1181 |             CharLit(c) => Literal {
[INFO] [stderr]      |             ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1185:13
[INFO] [stderr]      |
[INFO] [stderr] 1185 |             StrLit(s) => Literal {
[INFO] [stderr]      |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:669:13
[INFO] [stderr]     |
[INFO] [stderr] 669 |             modifiers[ms] ty[t] Ident(id) formalargs[args] block[b] => Method {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1063:13
[INFO] [stderr]      |
[INFO] [stderr] 1063 |             New Ident(id) dims[ds] => NewArrayExpr {
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1105:13
[INFO] [stderr]      |
[INFO] [stderr] 1105 |             New Ident(id) actualargs[a] => NonNewArrayExpr{
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1110:13
[INFO] [stderr]      |
[INFO] [stderr] 1110 |             Ident(id) actualargs[a] => NonNewArrayExpr{
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1044:13
[INFO] [stderr]      |
[INFO] [stderr] 1044 |             Ident(id) => Primary {
[INFO] [stderr]      |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1051:13
[INFO] [stderr]      |
[INFO] [stderr] 1051 |             primary[p] Dot Ident(id) => (p, id),
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1059:13
[INFO] [stderr]      |
[INFO] [stderr] 1059 |             Super Dot Ident(id) => id,
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:639:13
[INFO] [stderr]     |
[INFO] [stderr] 639 |             Extends Ident(id) => SuperNode {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:745:13
[INFO] [stderr]     |
[INFO] [stderr] 745 |             Ident(id) => Type::Custom(id),
[INFO] [stderr]     |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:788:13
[INFO] [stderr]     |
[INFO] [stderr] 788 |             Ident(id) => VarDeclaratorId {
[INFO] [stderr]     |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1158:13
[INFO] [stderr]      |
[INFO] [stderr] 1158 |             Ident(id) dim[d] => ArrayExpr {
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:624:13
[INFO] [stderr]     |
[INFO] [stderr] 624 |             Class Ident(id) supernode[s] LBrace members[ms] RBrace => ClassNode {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:630:13
[INFO] [stderr]     |
[INFO] [stderr] 630 |             Class Ident(id) LBrace members[ms] RBrace => ClassNode {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:680:13
[INFO] [stderr]     |
[INFO] [stderr] 680 |             modifiers[ms] Ident(id) formalargs[args] block[b] => Ctor {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1173:13
[INFO] [stderr]      |
[INFO] [stderr] 1173 |             BoolLit(b) => Literal {
[INFO] [stderr]      |             ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1177:13
[INFO] [stderr]      |
[INFO] [stderr] 1177 |             IntLit(i) => Literal {
[INFO] [stderr]      |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1181:13
[INFO] [stderr]      |
[INFO] [stderr] 1181 |             CharLit(c) => Literal {
[INFO] [stderr]      |             ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1185:13
[INFO] [stderr]      |
[INFO] [stderr] 1185 |             StrLit(s) => Literal {
[INFO] [stderr]      |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:669:13
[INFO] [stderr]     |
[INFO] [stderr] 669 |             modifiers[ms] ty[t] Ident(id) formalargs[args] block[b] => Method {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1063:13
[INFO] [stderr]      |
[INFO] [stderr] 1063 |             New Ident(id) dims[ds] => NewArrayExpr {
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1105:13
[INFO] [stderr]      |
[INFO] [stderr] 1105 |             New Ident(id) actualargs[a] => NonNewArrayExpr{
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1110:13
[INFO] [stderr]      |
[INFO] [stderr] 1110 |             Ident(id) actualargs[a] => NonNewArrayExpr{
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1044:13
[INFO] [stderr]      |
[INFO] [stderr] 1044 |             Ident(id) => Primary {
[INFO] [stderr]      |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1051:13
[INFO] [stderr]      |
[INFO] [stderr] 1051 |             primary[p] Dot Ident(id) => (p, id),
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]     --> src/lnp.rs:1059:13
[INFO] [stderr]      |
[INFO] [stderr] 1059 |             Super Dot Ident(id) => id,
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:639:13
[INFO] [stderr]     |
[INFO] [stderr] 639 |             Extends Ident(id) => SuperNode {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:745:13
[INFO] [stderr]     |
[INFO] [stderr] 745 |             Ident(id) => Type::Custom(id),
[INFO] [stderr]     |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lnp.rs:788:13
[INFO] [stderr]     |
[INFO] [stderr] 788 |             Ident(id) => VarDeclaratorId {
[INFO] [stderr]     |             ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `matches_macro` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(matches_macro)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `matches_macro` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(matches_macro)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 19 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 31s
[INFO] running `"docker" "inspect" "d23189ec168b7ab0dca70cbee6e7b1bcc2f0fb73041cd2ed2086c3a8548990ca"`
[INFO] running `"docker" "rm" "-f" "d23189ec168b7ab0dca70cbee6e7b1bcc2f0fb73041cd2ed2086c3a8548990ca"`
[INFO] [stdout] d23189ec168b7ab0dca70cbee6e7b1bcc2f0fb73041cd2ed2086c3a8548990ca