[INFO] cloning repository https://github.com/spica314/neco3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/spica314/neco3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fneco3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fneco3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 646fcf82146cb0f76cfc9ff7a695b561de1a515d
[INFO] checking spica314/neco3 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fneco3" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/spica314/neco3 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/spica314/neco3
[INFO] finished tweaking git repo https://github.com/spica314/neco3
[INFO] tweaked toml for git repo https://github.com/spica314/neco3 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/spica314/neco3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8a6c85b0c15dce7a172689027c9cfc466dd3fbab654f7d17ad9b015138b3dec
[INFO] running `Command { std: "docker" "start" "-a" "f8a6c85b0c15dce7a172689027c9cfc466dd3fbab654f7d17ad9b015138b3dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8a6c85b0c15dce7a172689027c9cfc466dd3fbab654f7d17ad9b015138b3dec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8a6c85b0c15dce7a172689027c9cfc466dd3fbab654f7d17ad9b015138b3dec", kill_on_drop: false }`
[INFO] [stdout] f8a6c85b0c15dce7a172689027c9cfc466dd3fbab654f7d17ad9b015138b3dec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7207edb0778702d65d498b0d30ba1a5a9af96b595f706b7c162ab401a6802815
[INFO] running `Command { std: "docker" "start" "-a" "7207edb0778702d65d498b0d30ba1a5a9af96b595f706b7c162ab401a6802815", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking neco-table v0.1.0 (/opt/rustwide/workdir/src/neco-table)
[INFO] [stderr]     Checking neco v0.1.0 (/opt/rustwide/workdir/src/neco)
[INFO] [stderr]     Checking neco-types-and-values v0.1.0 (/opt/rustwide/workdir/src/neco-types-and-values)
[INFO] [stderr]     Checking neco-ir v0.1.0 (/opt/rustwide/workdir/src/neco-ir)
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/neco-types-and-values/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]  --> src/neco-types-and-values/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking neco-syn v0.1.0 (/opt/rustwide/workdir/src/neco-syn)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/neco-types-and-values/src/bit_vector.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 33 |         self.len()
[INFO] [stdout]    |         ---------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/neco-types-and-values/src/bit_vector.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 33 |         self.len()
[INFO] [stdout]    |         ---------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `files`
[INFO] [stdout]  --> src/neco-syn/src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     files: Vec<ProgramFile>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `files`
[INFO] [stdout]  --> src/neco-syn/src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     files: Vec<ProgramFile>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking neco-syn-derive v0.1.0 (/opt/rustwide/workdir/src/neco-syn-derive)
[INFO] [stdout] warning: unused variable: `first_ty`
[INFO] [stdout]    --> src/neco-syn-derive/src/lib.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                     let first_ty = fields_unnamed.unnamed.iter().next().unwrap().clone().ty;
[INFO] [stdout]     |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_ty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_struct`
[INFO] [stdout]    --> src/neco-syn-derive/src/lib.rs:219:22
[INFO] [stdout]     |
[INFO] [stdout] 219 |         Data::Struct(data_struct) => {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_struct`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first_ty`
[INFO] [stdout]    --> src/neco-syn-derive/src/lib.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                     let first_ty = fields_unnamed.unnamed.iter().next().unwrap().clone().ty;
[INFO] [stdout]     |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_ty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_struct`
[INFO] [stdout]    --> src/neco-syn-derive/src/lib.rs:219:22
[INFO] [stdout]     |
[INFO] [stdout] 219 |         Data::Struct(data_struct) => {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_struct`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `first_ty`
[INFO] [stdout]    --> src/neco-syn-derive/src/lib.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |                     let first_ty = fields_unnamed.unnamed.iter().next().unwrap().clone().ty;
[INFO] [stdout]     |                         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_ty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data_struct`
[INFO] [stdout]    --> src/neco-syn-derive/src/lib.rs:219:22
[INFO] [stdout]     |
[INFO] [stdout] 219 |         Data::Struct(data_struct) => {
[INFO] [stdout]     |                      ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_struct`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `c`
[INFO] [stdout]  --> src/neco-syn-derive/tests/test001.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     c: char,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `c`
[INFO] [stdout]   --> src/neco-syn-derive/tests/test001.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     c: char,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ident`
[INFO] [stdout]   --> src/neco-syn-derive/tests/test001.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     ident: TokenLit,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `eq`
[INFO] [stdout]   --> src/neco-syn-derive/tests/test001.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     eq: TokenEq,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `expr`
[INFO] [stdout]   --> src/neco-syn-derive/tests/test001.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     expr: TokenLit,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `eq`
[INFO] [stdout]   --> src/neco-syn-derive/tests/test001.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     eq: TokenEq,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.34s
[INFO] running `Command { std: "docker" "inspect" "7207edb0778702d65d498b0d30ba1a5a9af96b595f706b7c162ab401a6802815", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7207edb0778702d65d498b0d30ba1a5a9af96b595f706b7c162ab401a6802815", kill_on_drop: false }`
[INFO] [stdout] 7207edb0778702d65d498b0d30ba1a5a9af96b595f706b7c162ab401a6802815