[INFO] cloning repository https://github.com/rofrol/rust-flood-fill [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rofrol/rust-flood-fill" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frofrol%2Frust-flood-fill", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frofrol%2Frust-flood-fill'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 926b0d596b6b787ab67ba569a1b1640d42e8fbc6 [INFO] testing rofrol/rust-flood-fill against beta-2022-02-22 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frofrol%2Frust-flood-fill" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rofrol/rust-flood-fill on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rofrol/rust-flood-fill [INFO] finished tweaking git repo https://github.com/rofrol/rust-flood-fill [INFO] tweaked toml for git repo https://github.com/rofrol/rust-flood-fill written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/rofrol/rust-flood-fill already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 37069246108d8af31bde58b9252e80a0630c894ded2df0e7a28b6fb022819ff4 [INFO] running `Command { std: "docker" "start" "-a" "37069246108d8af31bde58b9252e80a0630c894ded2df0e7a28b6fb022819ff4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "37069246108d8af31bde58b9252e80a0630c894ded2df0e7a28b6fb022819ff4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "37069246108d8af31bde58b9252e80a0630c894ded2df0e7a28b6fb022819ff4", kill_on_drop: false }` [INFO] [stdout] 37069246108d8af31bde58b9252e80a0630c894ded2df0e7a28b6fb022819ff4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 72b3713bb8a9d85b5105478171fb48ea17b6a070de2ce65ee136f49d9738db31 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "72b3713bb8a9d85b5105478171fb48ea17b6a070de2ce65ee136f49d9738db31", kill_on_drop: false }` [INFO] [stderr] Compiling rust-flood-fill v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `visited` [INFO] [stdout] --> src/main.rs:5:13 [INFO] [stdout] | [INFO] [stdout] 5 | let mut visited = [[0u8; 4]; 6]; [INFO] [stdout] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visited` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:11:10 [INFO] [stdout] | [INFO] [stdout] 11 | for (x, row) in state.iter().enumerate() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/main.rs:13:14 [INFO] [stdout] | [INFO] [stdout] 13 | for (y, cell) in row.iter().enumerate() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | let mut visited = [[0u8; 4]; 6]; [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: cannot borrow `colors` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/main.rs:16:13 [INFO] [stdout] | [INFO] [stdout] 15 | let val = colors.get(cell).unwrap_or(&0); [INFO] [stdout] | ---------------- immutable borrow occurs here [INFO] [stdout] 16 | colors.insert(cell, val + 1); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^---^^^^^ [INFO] [stdout] | | | [INFO] [stdout] | | immutable borrow later used here [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: erroneous constant used [INFO] [stdout] --> src/main.rs:3:14 [INFO] [stdout] | [INFO] [stdout] 3 | println!("Hello, world!"); [INFO] [stdout] | ^^^^^^^^^^^^^^^ referenced constant has errors [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(const_err)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #71800 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: erroneous constant used [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | println!("Hello, world!"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #71800 [INFO] [stdout] = note: this warning originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: erroneous constant used [INFO] [stdout] --> src/main.rs:7:14 [INFO] [stdout] | [INFO] [stdout] 7 | println!("{:?}", state); [INFO] [stdout] | ^^^^^^ referenced constant has errors [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #71800 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: erroneous constant used [INFO] [stdout] --> src/main.rs:19:14 [INFO] [stdout] | [INFO] [stdout] 19 | println!("len: {}", state.len()); [INFO] [stdout] | ^^^^^^^^^ referenced constant has errors [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #71800 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: erroneous constant used [INFO] [stdout] --> src/main.rs:14:22 [INFO] [stdout] | [INFO] [stdout] 14 | println!("{:?}", cell); [INFO] [stdout] | ^^^^^^ referenced constant has errors [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #71800 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: erroneous constant used [INFO] [stdout] --> src/main.rs:15:50 [INFO] [stdout] | [INFO] [stdout] 15 | let val = colors.get(cell).unwrap_or(&0); [INFO] [stdout] | ^^ referenced constant has errors [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #71800 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: erroneous constant used [INFO] [stdout] --> src/main.rs:20:14 [INFO] [stdout] | [INFO] [stdout] 20 | println!("0, 0: {}", state[0][0]); [INFO] [stdout] | ^^^^^^^^^^ referenced constant has errors [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #71800 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: erroneous constant used [INFO] [stdout] --> src/main.rs:21:14 [INFO] [stdout] | [INFO] [stdout] 21 | println!("colors: {:?}", colors); [INFO] [stdout] | ^^^^^^^^^^^^^^ referenced constant has errors [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #71800 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: erroneous constant used [INFO] [stdout] --> src/main.rs:22:14 [INFO] [stdout] | [INFO] [stdout] 22 | println!("colors: {:?}", colors); [INFO] [stdout] | ^^^^^^^^^^^^^^ referenced constant has errors [INFO] [stdout] | [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #71800 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] thread 'rustc' panicked at 'Box', /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/compiler/rustc_errors/src/lib.rs:1106:9 [INFO] [stdout] error: internal compiler error: /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/compiler/rustc_codegen_ssa/src/mir/constant.rs:42:20: encountered bad ConstKind after monomorphizing: Error(DelaySpanBugEmitted(())) [INFO] [stdout] --> src/main.rs:3:14 [INFO] [stdout] | [INFO] [stdout] 3 | println!("Hello, world!"); [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x7fb28af4b84c - std::backtrace_rs::backtrace::libunwind::trace::h02555d7ca8aa068a [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5 [INFO] [stderr] 1: 0x7fb28af4b84c - std::backtrace_rs::backtrace::trace_unsynchronized::h8555a46024147da8 [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x7fb28af4b84c - std::sys_common::backtrace::_print_fmt::h4c7f50b4f105da1e [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/sys_common/backtrace.rs:66:5 [INFO] [stderr] 3: 0x7fb28af4b84c - ::fmt::ha305a40dbc030444 [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/sys_common/backtrace.rs:45:22 [INFO] [stderr] 4: 0x7fb28afab2ec - core::fmt::write::hadd15acf4d6ce273 [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/core/src/fmt/mod.rs:1190:17 [INFO] [stderr] 5: 0x7fb28af3ba18 - std::io::Write::write_fmt::h0f87f6c0c21ec48a [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/io/mod.rs:1657:15 [INFO] [stderr] 6: 0x7fb28af4f817 - std::sys_common::backtrace::_print::h0dd5c0810675bd8c [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/sys_common/backtrace.rs:48:5 [INFO] [stderr] 7: 0x7fb28af4f817 - std::sys_common::backtrace::print::h20a2155fa0a22ca6 [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/sys_common/backtrace.rs:35:9 [INFO] [stderr] 8: 0x7fb28af4f817 - std::panicking::default_hook::{{closure}}::habb3b6f3ccdfe00a [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/panicking.rs:295:22 [INFO] [stderr] 9: 0x7fb28af4f4df - std::panicking::default_hook::h1c5cf4d5063a38e4 [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/panicking.rs:314:9 [INFO] [stderr] 10: 0x7fb28b6dbd01 - rustc_driver[6bef90fb01cd5c5b]::DEFAULT_HOOK::{closure#0}::{closure#0} [INFO] [stderr] 11: 0x7fb28af500e5 - std::panicking::rust_panic_with_hook::hb5de7a3072d2cf59 [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/panicking.rs:702:17 [INFO] [stderr] 12: 0x7fb28b80dd91 - std[f28d7f26b77e9927]::panicking::begin_panic::::{closure#0} [INFO] [stderr] 13: 0x7fb28b80db46 - std[f28d7f26b77e9927]::sys_common::backtrace::__rust_end_short_backtrace::::{closure#0}, !> [INFO] [stderr] 14: 0x7fb28b83e7ef - std[f28d7f26b77e9927]::panicking::begin_panic:: [INFO] [stderr] 15: 0x7fb28b854b6d - std[f28d7f26b77e9927]::panic::panic_any:: [INFO] [stderr] 16: 0x7fb28b851ca8 - ::span_bug:: [INFO] [stderr] 17: 0x7fb28b851980 - ::span_bug:: [INFO] [stderr] 18: 0x7fb28b8266e8 - rustc_middle[35226b2a2d959981]::ty::context::tls::with_opt::::{closure#0}, ()> [INFO] [stderr] 19: 0x7fb28b8269a0 - rustc_middle[35226b2a2d959981]::util::bug::opt_span_bug_fmt:: [INFO] [stderr] 20: 0x7fb28b82696c - rustc_middle[35226b2a2d959981]::util::bug::span_bug_fmt:: [INFO] [stderr] 21: 0x7fb28c960659 - >::codegen_rvalue_operand [INFO] [stderr] 22: 0x7fb28c968861 - rustc_codegen_ssa[97459cfbebab0e68]::mir::codegen_mir:: [INFO] [stderr] 23: 0x7fb28c9251e2 - rustc_codegen_llvm[b55d4a142e2be4d5]::base::compile_codegen_unit::module_codegen [INFO] [stderr] 24: 0x7fb28d5adaa6 - >::with_task::> [INFO] [stderr] 25: 0x7fb28d5ab2bf - rustc_codegen_llvm[b55d4a142e2be4d5]::base::compile_codegen_unit [INFO] [stderr] 26: 0x7fb28d5d9495 - rustc_codegen_ssa[97459cfbebab0e68]::base::codegen_crate:: [INFO] [stderr] 27: 0x7fb28d59a07a - ::codegen_crate [INFO] [stderr] 28: 0x7fb28d58bde7 - ::time::, rustc_interface[b2fc20e59d639e2e]::passes::start_codegen::{closure#0}> [INFO] [stderr] 29: 0x7fb28d572336 - ::enter::<::ongoing_codegen::{closure#0}::{closure#0}, core[c37c5d1d9572cc31]::result::Result, rustc_errors[67cbba2d4402017b]::ErrorReported>> [INFO] [stderr] 30: 0x7fb28d5686af - ::ongoing_codegen [INFO] [stderr] 31: 0x7fb28d540183 - rustc_interface[b2fc20e59d639e2e]::interface::create_compiler_and_run::, rustc_driver[6bef90fb01cd5c5b]::run_compiler::{closure#1}> [INFO] [stderr] 32: 0x7fb28d525804 - std[f28d7f26b77e9927]::sys_common::backtrace::__rust_begin_short_backtrace::, rustc_driver[6bef90fb01cd5c5b]::run_compiler::{closure#1}>::{closure#0}, core[c37c5d1d9572cc31]::result::Result<(), rustc_errors[67cbba2d4402017b]::ErrorReported>>::{closure#0}, core[c37c5d1d9572cc31]::result::Result<(), rustc_errors[67cbba2d4402017b]::ErrorReported>> [INFO] [stderr] 33: 0x7fb28d558a99 - <::spawn_unchecked_, rustc_driver[6bef90fb01cd5c5b]::run_compiler::{closure#1}>::{closure#0}, core[c37c5d1d9572cc31]::result::Result<(), rustc_errors[67cbba2d4402017b]::ErrorReported>>::{closure#0}, core[c37c5d1d9572cc31]::result::Result<(), rustc_errors[67cbba2d4402017b]::ErrorReported>>::{closure#1} as core[c37c5d1d9572cc31]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 34: 0x7fb28af5bbd3 - as core::ops::function::FnOnce>::call_once::h82a18723295373b7 [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/alloc/src/boxed.rs:1854:9 [INFO] [stderr] 35: 0x7fb28af5bbd3 - as core::ops::function::FnOnce>::call_once::h4b9b8634f7a2a5a4 [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/alloc/src/boxed.rs:1854:9 [INFO] [stderr] 36: 0x7fb28af5bbd3 - std::sys::unix::thread::Thread::new::thread_start::h3dc341aa024c6852 [INFO] [stderr] at /rustc/0a4f984a87c7ba6c74ec3e78442fec955a419e32/library/std/src/sys/unix/thread.rs:108:17 [INFO] [stderr] 37: 0x7fb28ae6d609 - start_thread [INFO] [stderr] 38: 0x7fb28ad87293 - clone [INFO] [stderr] 39: 0x0 - [INFO] [stderr] [INFO] [stderr] note: the compiler unexpectedly panicked. this is a bug. [INFO] [stderr] [INFO] [stderr] note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md [INFO] [stderr] [INFO] [stderr] note: rustc 1.60.0-beta.1 (0a4f984a8 2022-02-22) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: --crate-type bin -C embed-bitcode=no -C debuginfo=2 [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] query stack during panic: [INFO] [stderr] end of query stack [INFO] [stdout] error: aborting due to previous error; 14 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `rust-flood-fill` due to previous error; 14 warnings emitted [INFO] running `Command { std: "docker" "inspect" "72b3713bb8a9d85b5105478171fb48ea17b6a070de2ce65ee136f49d9738db31", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "72b3713bb8a9d85b5105478171fb48ea17b6a070de2ce65ee136f49d9738db31", kill_on_drop: false }` [INFO] [stdout] 72b3713bb8a9d85b5105478171fb48ea17b6a070de2ce65ee136f49d9738db31