[INFO] cloning repository https://github.com/chrisdickinson/compilers-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chrisdickinson/compilers-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisdickinson%2Fcompilers-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisdickinson%2Fcompilers-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ba724cd202317db8224e439ba5f1d75776017f8
[INFO] checking chrisdickinson/compilers-exercises against 79c0559184f27f4433a6fbc260b950d06d4a4889 for pr-162233-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisdickinson%2Fcompilers-exercises" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chrisdickinson/compilers-exercises
[INFO] finished tweaking git repo https://github.com/chrisdickinson/compilers-exercises
[INFO] tweaked toml for git repo https://github.com/chrisdickinson/compilers-exercises written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chrisdickinson/compilers-exercises on toolchain 79c0559184f27f4433a6fbc260b950d06d4a4889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chrisdickinson/compilers-exercises 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" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking chrisdickinson/compilers-exercises against 79c0559184f27f4433a6fbc260b950d06d4a4889 for pr-162233-crater-rollup
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchrisdickinson%2Fcompilers-exercises" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/chrisdickinson/compilers-exercises
[INFO] finished tweaking git repo https://github.com/chrisdickinson/compilers-exercises
[INFO] tweaked toml for git repo https://github.com/chrisdickinson/compilers-exercises written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/chrisdickinson/compilers-exercises on toolchain 79c0559184f27f4433a6fbc260b950d06d4a4889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/chrisdickinson/compilers-exercises 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" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4626ade7fe32b6e9602c21f7476d00975d5dedc72eaf2a043d408dad8e4e5131
[INFO] running `Command { std: "docker" "start" "4626ade7fe32b6e9602c21f7476d00975d5dedc72eaf2a043d408dad8e4e5131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4626ade7fe32b6e9602c21f7476d00975d5dedc72eaf2a043d408dad8e4e5131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4626ade7fe32b6e9602c21f7476d00975d5dedc72eaf2a043d408dad8e4e5131" "/opt/rustwide/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4626ade7fe32b6e9602c21f7476d00975d5dedc72eaf2a043d408dad8e4e5131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4626ade7fe32b6e9602c21f7476d00975d5dedc72eaf2a043d408dad8e4e5131" "/opt/rustwide/cargo-home/bin/cargo" "+79c0559184f27f4433a6fbc260b950d06d4a4889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling compilers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `crate::sys::syscall3`
[INFO] [stdout]  --> src/io.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::sys::syscall3;
[INFO] [stdout]   |     ^^^^^^^^^^^^--------
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 no `syscall3` in `sys`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> src/sys.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg(target_arch = "aarch64")]
[INFO] [stdout]   |       ----------------------- the item is gated behind the `aarch64` feature
[INFO] [stdout] 6 | pub(crate) unsafe fn syscall3(syscall_number: u64, arg0: usize, arg1: usize, arg2: usize) -> usize {
[INFO] [stdout]   |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::sys::exit`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::sys::exit;
[INFO] [stdout]    |     ^^^^^^^^^^^^----
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 no `exit` in `sys`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> src/sys.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[cfg(target_arch = "aarch64")]
[INFO] [stdout]    |       ----------------------- the item is gated behind the `aarch64` feature
[INFO] [stdout] 20 | pub(crate) fn exit(code: i32) -> ! {
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::sys::syscall3`
[INFO] [stdout]  --> src/io.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::sys::syscall3;
[INFO] [stdout]   |     ^^^^^^^^^^^^--------
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 no `syscall3` in `sys`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> src/sys.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg(target_arch = "aarch64")]
[INFO] [stdout]   |       ----------------------- the item is gated behind the `aarch64` feature
[INFO] [stdout] 6 | pub(crate) unsafe fn syscall3(syscall_number: u64, arg0: usize, arg1: usize, arg2: usize) -> usize {
[INFO] [stdout]   |                      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crate::sys::exit`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::sys::exit;
[INFO] [stdout]    |     ^^^^^^^^^^^^----
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 no `exit` in `sys`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> src/sys.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 19 | #[cfg(target_arch = "aarch64")]
[INFO] [stdout]    |       ----------------------- the item is gated behind the `aarch64` feature
[INFO] [stdout] 20 | pub(crate) fn exit(code: i32) -> ! {
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lang_items` is internal to the compiler or standard library
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(lang_items)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lang_items` is internal to the compiler or standard library
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(lang_items)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the usage of Script Group `Greek` in this crate consists solely of mixed script confusables
[INFO] [stdout]   --> src/regex.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn ε_closure<const N: usize>(_n: &Nfa<N>) -> Dfa<N> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the usage includes 'ε' (U+03B5)
[INFO] [stdout]    = note: please recheck to make sure their usages are indeed what you want
[INFO] [stdout]    = note: `#[warn(mixed_script_confusables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the usage of Script Group `Greek` in this crate consists solely of mixed script confusables
[INFO] [stdout]   --> src/regex.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn ε_closure<const N: usize>(_n: &Nfa<N>) -> Dfa<N> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the usage includes 'ε' (U+03B5)
[INFO] [stdout]    = note: please recheck to make sure their usages are indeed what you want
[INFO] [stdout]    = note: `#[warn(mixed_script_confusables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::io::flush`
[INFO] [stdout]  --> src/sys.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::io::flush;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_option` has been stable since 1.83.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_option)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_option` has been stable since 1.83.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_option)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `const_slice_index`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_slice_index)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: there is a feature with a similar name: `const_slice_len`
[INFO] [stdout]   |
[INFO] [stdout] 4 - #![feature(const_slice_index)]
[INFO] [stdout] 4 + #![feature(const_slice_len)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `const_slice_index`
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_slice_index)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: there is a feature with a similar name: `const_slice_len`
[INFO] [stdout]   |
[INFO] [stdout] 4 - #![feature(const_slice_index)]
[INFO] [stdout] 4 + #![feature(const_slice_len)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl usize>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]   --> src/io.rs:99:27
[INFO] [stdout]    |
[INFO] [stdout] 99 |     } else if N == usize::max_value() {
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl usize>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]   --> src/io.rs:99:27
[INFO] [stdout]    |
[INFO] [stdout] 99 |     } else if N == usize::max_value() {
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl usize>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/io.rs:174:27
[INFO] [stdout]     |
[INFO] [stdout] 174 |     } else if N == usize::max_value() {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl usize>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]    --> src/io.rs:174:27
[INFO] [stdout]     |
[INFO] [stdout] 174 |     } else if N == usize::max_value() {
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `core::panic::PanicInfo::<'a>::payload`: this never returns anything useful
[INFO] [stdout]   --> src/sys.rs:41:33
[INFO] [stdout]    |
[INFO] [stdout] 41 |     if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
[INFO] [stdout]    |                                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `exit` in this scope
[INFO] [stdout]   --> src/sys.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     exit(1);
[INFO] [stdout]    |     ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/sys.rs:39:50
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn panic(panic_info: &core::panic::PanicInfo) -> ! {
[INFO] [stdout]    |    -----                                         ^ expected `!`, found `()`
[INFO] [stdout]    |    |
[INFO] [stdout]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note:   expected type `!`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0425, E0432, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compilers` (bin "compilers" test) due to 3 previous errors; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `compilers` (bin "compilers") due to 5 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4626ade7fe32b6e9602c21f7476d00975d5dedc72eaf2a043d408dad8e4e5131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4626ade7fe32b6e9602c21f7476d00975d5dedc72eaf2a043d408dad8e4e5131", kill_on_drop: false }`
[INFO] [stdout] 4626ade7fe32b6e9602c21f7476d00975d5dedc72eaf2a043d408dad8e4e5131
