[INFO] cloning repository https://github.com/ekinimo/friss
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ekinimo/friss" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fekinimo%2Ffriss", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fekinimo%2Ffriss'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f3716aca747b88d85314fdf170ca2dafbcde3005
[INFO] checking ekinimo/friss against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fekinimo%2Ffriss" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ekinimo/friss
[INFO] finished tweaking git repo https://github.com/ekinimo/friss
[INFO] tweaked toml for git repo https://github.com/ekinimo/friss written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ekinimo/friss on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ekinimo/friss 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c1cdae33a01c48b84feba04dc569c9ba6d57ddcae5d6e9a555dfbfdb25135d4
[INFO] running `Command { std: "docker" "start" "-a" "0c1cdae33a01c48b84feba04dc569c9ba6d57ddcae5d6e9a555dfbfdb25135d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c1cdae33a01c48b84feba04dc569c9ba6d57ddcae5d6e9a555dfbfdb25135d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c1cdae33a01c48b84feba04dc569c9ba6d57ddcae5d6e9a555dfbfdb25135d4", kill_on_drop: false }`
[INFO] [stdout] 0c1cdae33a01c48b84feba04dc569c9ba6d57ddcae5d6e9a555dfbfdb25135d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17bd0e2c32b8097470202b4766d8c84179279237382adcdd24ab3b94064b5756
[INFO] running `Command { std: "docker" "start" "-a" "17bd0e2c32b8097470202b4766d8c84179279237382adcdd24ab3b94064b5756", kill_on_drop: false }`
[INFO] [stderr]     Checking friss v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Cell` and `rc::Rc`
[INFO] [stdout]   --> src/core.rs:34:34
[INFO] [stdout]    |
[INFO] [stdout] 34 | use std::{borrow::Borrow, cell::{Cell, RefCell}, marker::PhantomData, rc::Rc};
[INFO] [stdout]    |                                  ^^^^                                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StatefulParser`
[INFO] [stdout]   --> src/memo.rs:35:34
[INFO] [stdout]    |
[INFO] [stdout] 35 | use crate::state::{StateCarrier, StatefulParser};
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::core::recursive`
[INFO] [stdout]    --> src/packrat.rs:548:9
[INFO] [stdout]     |
[INFO] [stdout] 548 |     use crate::core::recursive;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cell` and `rc::Rc`
[INFO] [stdout]   --> src/core.rs:34:34
[INFO] [stdout]    |
[INFO] [stdout] 34 | use std::{borrow::Borrow, cell::{Cell, RefCell}, marker::PhantomData, rc::Rc};
[INFO] [stdout]    |                                  ^^^^                                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StatefulParser`
[INFO] [stdout]   --> src/memo.rs:35:34
[INFO] [stdout]    |
[INFO] [stdout] 35 | use crate::state::{StateCarrier, StatefulParser};
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]   --> src/core.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 | use std::{borrow::Borrow, cell::{Cell, RefCell}, marker::PhantomData, rc::Rc};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/packrat.rs:296:29
[INFO] [stdout]     |
[INFO] [stdout] 296 |                 if let Some(mut recursion_state) =
[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: type `GrowthStatus` is more private than the item `RecursionState::status`
[INFO] [stdout]   --> src/packrat.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub status: GrowthStatus,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^ field `RecursionState::status` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `GrowthStatus` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/packrat.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum GrowthStatus {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NotInvolved` is never constructed
[INFO] [stdout]   --> src/packrat.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum GrowthStatus {
[INFO] [stdout]    |      ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 23 |     NotInvolved,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GrowthStatus` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `borrow::Borrow`
[INFO] [stdout]   --> src/core.rs:34:11
[INFO] [stdout]    |
[INFO] [stdout] 34 | use std::{borrow::Borrow, cell::{Cell, RefCell}, marker::PhantomData, rc::Rc};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/packrat.rs:296:29
[INFO] [stdout]     |
[INFO] [stdout] 296 |                 if let Some(mut recursion_state) =
[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: unused variable: `state`
[INFO] [stdout]    --> src/tests.rs:422:10
[INFO] [stdout]     |
[INFO] [stdout] 422 |         |state, digit| {
[INFO] [stdout]     |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `GrowthStatus` is more private than the item `RecursionState::status`
[INFO] [stdout]   --> src/packrat.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     pub status: GrowthStatus,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^ field `RecursionState::status` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `GrowthStatus` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/packrat.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum GrowthStatus {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NotInvolved` is never constructed
[INFO] [stdout]   --> src/packrat.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum GrowthStatus {
[INFO] [stdout]    |      ------------ variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 23 |     NotInvolved,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GrowthStatus` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BinaryOp` is never constructed
[INFO] [stdout]    --> src/packrat.rs:558:9
[INFO] [stdout]     |
[INFO] [stdout] 555 |     enum Expr {
[INFO] [stdout]     |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 558 |         BinaryOp(Box<Expr>, Op, Box<Expr>),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Add` and `Mul` are never constructed
[INFO] [stdout]    --> src/packrat.rs:563:9
[INFO] [stdout]     |
[INFO] [stdout] 562 |     enum Op {
[INFO] [stdout]     |          -- variants in this enum
[INFO] [stdout] 563 |         Add,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 564 |         Mul,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Op` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ExpectedEndOfInput` is never constructed
[INFO] [stdout]    --> src/tests.rs:605:5
[INFO] [stdout]     |
[INFO] [stdout] 596 | enum JsonError {
[INFO] [stdout]     |      --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 605 |     ExpectedEndOfInput,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `JsonError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `UnexpectedInput` is never constructed
[INFO] [stdout]    --> src/tests.rs:898:9
[INFO] [stdout]     |
[INFO] [stdout] 886 |     pub enum ParseError {
[INFO] [stdout]     |              ---------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 898 |         UnexpectedInput,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParseError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.83s
[INFO] running `Command { std: "docker" "inspect" "17bd0e2c32b8097470202b4766d8c84179279237382adcdd24ab3b94064b5756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17bd0e2c32b8097470202b4766d8c84179279237382adcdd24ab3b94064b5756", kill_on_drop: false }`
[INFO] [stdout] 17bd0e2c32b8097470202b4766d8c84179279237382adcdd24ab3b94064b5756