[INFO] fetching crate core_io 0.1.20210325...
[INFO] testing core_io-0.1.20210325 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate core_io 0.1.20210325 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate core_io 0.1.20210325
[INFO] finished tweaking crates.io crate core_io 0.1.20210325
[INFO] tweaked toml for crates.io crate core_io 0.1.20210325 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate core_io 0.1.20210325 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to highest compatible versions
[INFO] [stderr]       Adding rustc_version v0.1.7 (available: v0.4.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `core_io` (manifest) generated 1 warning
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c76e924c9c7e6d67abe541040b492e5b9e17761da8284598b890cb40895045c1
[INFO] running `Command { std: "docker" "start" "c76e924c9c7e6d67abe541040b492e5b9e17761da8284598b890cb40895045c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c76e924c9c7e6d67abe541040b492e5b9e17761da8284598b890cb40895045c1", 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" "c76e924c9c7e6d67abe541040b492e5b9e17761da8284598b890cb40895045c1" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c76e924c9c7e6d67abe541040b492e5b9e17761da8284598b890cb40895045c1", 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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c76e924c9c7e6d67abe541040b492e5b9e17761da8284598b890cb40895045c1" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `core_io` (manifest) generated 1 warning
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling core_io v0.1.20210325 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `core_io v0.1.20210325 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_RELEASE_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/release/build/core_io-99e78028b604b4cb/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (95) panicked at build.rs:73:69:
[INFO] [stderr]   Unknown compiler version, upgrade core_io?
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x62a196530de1 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x62a19654214a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stderr]      2:     0x62a196534bcc - <std[70759c8f55707aa4]::sys::stdio::unix::Stderr as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x62a1965141f6 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x62a19652cd01 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stderr]      5:     0x62a19652cebb - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x62a1965142a2 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x62a19650d179 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x62a196514a9d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stderr]      9:     0x62a1965428bc - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stderr]     10:     0x62a196542614 - core[df12db4294e9bfd3]::option::expect_failed
[INFO] [stderr]     11:     0x62a1964f6833 - <core[df12db4294e9bfd3]::option::Option<&build_script_build[b5677f83b2f46068]::Mapping>>::expect
[INFO] [stderr]     12:     0x62a1964f57d3 - build_script_build[b5677f83b2f46068]::main
[INFO] [stderr]     13:     0x62a1964f7dfb - <fn() as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     14:     0x62a1964f4b76 - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     15:     0x62a1964f4ed9 - std[70759c8f55707aa4]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     16:     0x62a19652c139 - std[70759c8f55707aa4]::rt::lang_start_internal
[INFO] [stderr]     17:     0x62a1964f4a11 - std[70759c8f55707aa4]::rt::lang_start::<()>
[INFO] [stderr]     18:     0x62a1964f7fd5 - main
[INFO] [stderr]     19:     0x729f19e2e601 - <unknown>
[INFO] [stderr]     20:     0x729f19e2e718 - __libc_start_main
[INFO] [stderr]     21:     0x62a1964f3695 - _start
[INFO] [stderr]     22:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "c76e924c9c7e6d67abe541040b492e5b9e17761da8284598b890cb40895045c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c76e924c9c7e6d67abe541040b492e5b9e17761da8284598b890cb40895045c1", kill_on_drop: false }`
[INFO] [stdout] c76e924c9c7e6d67abe541040b492e5b9e17761da8284598b890cb40895045c1
