[INFO] updating cached repository https://github.com/aep/zz
[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] [stderr] From https://github.com/aep/zz
[INFO] [stderr]  + a693244...d169911 fs         -> fs  (forced update)
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2dd92b959f7c34bf99af84b263e3864a5c41a0fe
[INFO] checking aep/zz against try#13f916f63bc6575d5ff1f989237dfabe88981368 for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faep%2Fzz" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aep/zz on toolchain 13f916f63bc6575d5ff1f989237dfabe88981368
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aep/zz
[INFO] finished tweaking git repo https://github.com/aep/zz
[INFO] tweaked toml for git repo https://github.com/aep/zz written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/aep/zz already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+13f916f63bc6575d5ff1f989237dfabe88981368" "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] 27e4dae88fba5236132be7c9fee9779f8fe24ab13fce8db6bb034ebc10463c3e
[INFO] running `"docker" "start" "-a" "27e4dae88fba5236132be7c9fee9779f8fe24ab13fce8db6bb034ebc10463c3e"`
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]     Checking metrohash v1.0.6
[INFO] [stderr]    Compiling pest v2.1.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking pbr v1.0.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rayon-core v1.5.0
[INFO] [stderr]    Compiling pest_meta v2.1.1
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]     Checking rsmt2-zz v0.11.1
[INFO] [stderr]     Checking which v3.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking zz v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `emit_debug`
[INFO] [stderr]  --> src/expand.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | use super::parser::{emit_debug};
[INFO] [stderr]   |                     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]   --> src/lib.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | use std::path::Path;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `emit_debug`
[INFO] [stderr]  --> src/expand.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | use super::parser::{emit_debug};
[INFO] [stderr]   |                     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]   --> src/lib.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | use std::path::Path;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/emitter.rs:256:17
[INFO] [stderr]     |
[INFO] [stderr] 256 |                 _ => (),
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `complete`
[INFO] [stderr]    --> src/flatten.rs:544:22
[INFO] [stderr]     |
[INFO] [stderr] 544 |             for (dep,complete,loc) in &impl_deps  {
[INFO] [stderr]     |                      ^^^^^^^^ help: consider prefixing with an underscore: `_complete`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `complete`
[INFO] [stderr]    --> src/flatten.rs:547:22
[INFO] [stderr]     |
[INFO] [stderr] 547 |             for (dep,complete,loc) in &decl_deps  {
[INFO] [stderr]     |                      ^^^^^^^^ help: consider prefixing with an underscore: `_complete`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `inline`
[INFO] [stderr]    --> src/emitter.rs:235:36
[INFO] [stderr]     |
[INFO] [stderr] 235 |                 ast::Def::Include {inline,..} => {
[INFO] [stderr]     |                                    ^^^^^^ help: try ignoring the field: `inline: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fields`
[INFO] [stderr]    --> src/emitter.rs:505:14
[INFO] [stderr]     |
[INFO] [stderr] 505 |         let (fields, packed, _tail, union) = match &ast.def {
[INFO] [stderr]     |              ^^^^^^ help: consider prefixing with an underscore: `_fields`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packed`
[INFO] [stderr]    --> src/emitter.rs:505:22
[INFO] [stderr]     |
[INFO] [stderr] 505 |         let (fields, packed, _tail, union) = match &ast.def {
[INFO] [stderr]     |                      ^^^^^^ help: consider prefixing with an underscore: `_packed`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail_variant`
[INFO] [stderr]    --> src/emitter.rs:504:57
[INFO] [stderr]     |
[INFO] [stderr] 504 |     pub fn emit_struct_def(&mut self, ast: &ast::Local, tail_variant: Option<u64>) {
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_tail_variant`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `complete`
[INFO] [stderr]    --> src/symbolic.rs:237:16
[INFO] [stderr]     |
[INFO] [stderr] 237 |         for (d,complete) in &mut module.d {
[INFO] [stderr]     |                ^^^^^^^^ help: consider prefixing with an underscore: `_complete`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sym`
[INFO] [stderr]    --> src/symbolic.rs:384:25
[INFO] [stderr]     |
[INFO] [stderr] 384 |                     let sym = match sym {
[INFO] [stderr]     |                         ^^^ help: consider prefixing with an underscore: `_sym`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]     --> src/symbolic.rs:2046:30
[INFO] [stderr]      |
[INFO] [stderr] 2046 |                         for (i, arg) in args.iter_mut().enumerate() {
[INFO] [stderr]      |                              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/expand.rs:120:32
[INFO] [stderr]     |
[INFO] [stderr] 120 |             ast::Def::Function{args, callassert, callattests, calleffect, ..} => {
[INFO] [stderr]     |                                ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `callassert`
[INFO] [stderr]    --> src/expand.rs:120:38
[INFO] [stderr]     |
[INFO] [stderr] 120 |             ast::Def::Function{args, callassert, callattests, calleffect, ..} => {
[INFO] [stderr]     |                                      ^^^^^^^^^^ help: try ignoring the field: `callassert: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `callattests`
[INFO] [stderr]    --> src/expand.rs:120:50
[INFO] [stderr]     |
[INFO] [stderr] 120 |             ast::Def::Function{args, callassert, callattests, calleffect, ..} => {
[INFO] [stderr]     |                                                  ^^^^^^^^^^^ help: try ignoring the field: `callattests: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `calleffect`
[INFO] [stderr]    --> src/expand.rs:120:63
[INFO] [stderr]     |
[INFO] [stderr] 120 |             ast::Def::Function{args, callassert, callattests, calleffect, ..} => {
[INFO] [stderr]     |                                                               ^^^^^^^^^^ help: try ignoring the field: `calleffect: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field`
[INFO] [stderr]    --> src/expand.rs:184:25
[INFO] [stderr]     |
[INFO] [stderr] 184 |                     for field in fields {
[INFO] [stderr]     |                         ^^^^^ help: consider prefixing with an underscore: `_field`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `accesslocal`
[INFO] [stderr]    --> src/expand.rs:544:17
[INFO] [stderr]     |
[INFO] [stderr] 544 |             let accesslocal = ast::Expression::UnaryPre {
[INFO] [stderr]     |                 ^^^^^^^^^^^ help: consider prefixing with an underscore: `_accesslocal`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/emitter.rs:256:17
[INFO] [stderr]     |
[INFO] [stderr] 256 |                 _ => (),
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `complete`
[INFO] [stderr]    --> src/flatten.rs:544:22
[INFO] [stderr]     |
[INFO] [stderr] 544 |             for (dep,complete,loc) in &impl_deps  {
[INFO] [stderr]     |                      ^^^^^^^^ help: consider prefixing with an underscore: `_complete`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `complete`
[INFO] [stderr]    --> src/flatten.rs:547:22
[INFO] [stderr]     |
[INFO] [stderr] 547 |             for (dep,complete,loc) in &decl_deps  {
[INFO] [stderr]     |                      ^^^^^^^^ help: consider prefixing with an underscore: `_complete`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `inline`
[INFO] [stderr]    --> src/emitter.rs:235:36
[INFO] [stderr]     |
[INFO] [stderr] 235 |                 ast::Def::Include {inline,..} => {
[INFO] [stderr]     |                                    ^^^^^^ help: try ignoring the field: `inline: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fields`
[INFO] [stderr]    --> src/emitter.rs:505:14
[INFO] [stderr]     |
[INFO] [stderr] 505 |         let (fields, packed, _tail, union) = match &ast.def {
[INFO] [stderr]     |              ^^^^^^ help: consider prefixing with an underscore: `_fields`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packed`
[INFO] [stderr]    --> src/emitter.rs:505:22
[INFO] [stderr]     |
[INFO] [stderr] 505 |         let (fields, packed, _tail, union) = match &ast.def {
[INFO] [stderr]     |                      ^^^^^^ help: consider prefixing with an underscore: `_packed`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail_variant`
[INFO] [stderr]    --> src/emitter.rs:504:57
[INFO] [stderr]     |
[INFO] [stderr] 504 |     pub fn emit_struct_def(&mut self, ast: &ast::Local, tail_variant: Option<u64>) {
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_tail_variant`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `complete`
[INFO] [stderr]    --> src/symbolic.rs:237:16
[INFO] [stderr]     |
[INFO] [stderr] 237 |         for (d,complete) in &mut module.d {
[INFO] [stderr]     |                ^^^^^^^^ help: consider prefixing with an underscore: `_complete`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sym`
[INFO] [stderr]    --> src/symbolic.rs:384:25
[INFO] [stderr]     |
[INFO] [stderr] 384 |                     let sym = match sym {
[INFO] [stderr]     |                         ^^^ help: consider prefixing with an underscore: `_sym`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]     --> src/symbolic.rs:2046:30
[INFO] [stderr]      |
[INFO] [stderr] 2046 |                         for (i, arg) in args.iter_mut().enumerate() {
[INFO] [stderr]      |                              ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/expand.rs:120:32
[INFO] [stderr]     |
[INFO] [stderr] 120 |             ast::Def::Function{args, callassert, callattests, calleffect, ..} => {
[INFO] [stderr]     |                                ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `callassert`
[INFO] [stderr]    --> src/expand.rs:120:38
[INFO] [stderr]     |
[INFO] [stderr] 120 |             ast::Def::Function{args, callassert, callattests, calleffect, ..} => {
[INFO] [stderr]     |                                      ^^^^^^^^^^ help: try ignoring the field: `callassert: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `callattests`
[INFO] [stderr]    --> src/expand.rs:120:50
[INFO] [stderr]     |
[INFO] [stderr] 120 |             ast::Def::Function{args, callassert, callattests, calleffect, ..} => {
[INFO] [stderr]     |                                                  ^^^^^^^^^^^ help: try ignoring the field: `callattests: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `calleffect`
[INFO] [stderr]    --> src/expand.rs:120:63
[INFO] [stderr]     |
[INFO] [stderr] 120 |             ast::Def::Function{args, callassert, callattests, calleffect, ..} => {
[INFO] [stderr]     |                                                               ^^^^^^^^^^ help: try ignoring the field: `calleffect: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `field`
[INFO] [stderr]    --> src/expand.rs:184:25
[INFO] [stderr]     |
[INFO] [stderr] 184 |                     for field in fields {
[INFO] [stderr]     |                         ^^^^^ help: consider prefixing with an underscore: `_field`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `accesslocal`
[INFO] [stderr]    --> src/expand.rs:544:17
[INFO] [stderr]     |
[INFO] [stderr] 544 |             let accesslocal = ast::Expression::UnaryPre {
[INFO] [stderr]     |                 ^^^^^^^^^^^ help: consider prefixing with an underscore: `_accesslocal`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/abs.rs:594:9
[INFO] [stderr]     |
[INFO] [stderr] 594 |     let mut newimports = Vec::new();
[INFO] [stderr]     |         ----^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/expand.rs:535:13
[INFO] [stderr]     |
[INFO] [stderr] 535 |         let mut r = Vec::new();
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/abs.rs:594:9
[INFO] [stderr]     |
[INFO] [stderr] 594 |     let mut newimports = Vec::new();
[INFO] [stderr]     |         ----^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/expand.rs:535:13
[INFO] [stderr]     |
[INFO] [stderr] 535 |         let mut r = Vec::new();
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]   --> src/main.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::time::{Duration, Instant};
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]   --> src/main.rs:13:17
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::time::{Duration, Instant};
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 16s
[INFO] running `"docker" "inspect" "27e4dae88fba5236132be7c9fee9779f8fe24ab13fce8db6bb034ebc10463c3e"`
[INFO] running `"docker" "rm" "-f" "27e4dae88fba5236132be7c9fee9779f8fe24ab13fce8db6bb034ebc10463c3e"`
[INFO] [stdout] 27e4dae88fba5236132be7c9fee9779f8fe24ab13fce8db6bb034ebc10463c3e