[INFO] fetching crate core_collections 0.3.20170409...
[INFO] testing core_collections-0.3.20170409 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate core_collections 0.3.20170409 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate core_collections 0.3.20170409
[INFO] finished tweaking crates.io crate core_collections 0.3.20170409
[INFO] tweaked toml for crates.io crate core_collections 0.3.20170409 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate core_collections 0.3.20170409 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "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" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to highest compatible versions
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.10.3)
[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" "+1.100.0-beta.1" "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_collections` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c005deeca86f7efb508b663cfe2f2e177b465a366b0ed008e6a8eb6208d1be52
[INFO] running `Command { std: "docker" "start" "c005deeca86f7efb508b663cfe2f2e177b465a366b0ed008e6a8eb6208d1be52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c005deeca86f7efb508b663cfe2f2e177b465a366b0ed008e6a8eb6208d1be52", 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" "c005deeca86f7efb508b663cfe2f2e177b465a366b0ed008e6a8eb6208d1be52" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c005deeca86f7efb508b663cfe2f2e177b465a366b0ed008e6a8eb6208d1be52", 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" "c005deeca86f7efb508b663cfe2f2e177b465a366b0ed008e6a8eb6208d1be52" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "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_collections` (manifest) generated 1 warning
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling core_collections v0.3.20170409 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `core_collections v0.3.20170409 (/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_collections/adcf29b388bd466a/out/build_script_build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (87) panicked at build.rs:48:69:
[INFO] [stderr]   Unknown compiler version, upgrade core_collections?
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x639d1bb729d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x639d1bb83a7a - core[a373ad73a504971]::fmt::write
[INFO] [stderr]      2:     0x639d1bb7643c - <std[617be2ca0a6fd877]::sys::stdio::unix::Stderr as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x639d1bb55cb6 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x639d1bb6e801 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stderr]      5:     0x639d1bb6e9bb - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x639d1bb55d62 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x639d1bb4ec19 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x639d1bb5652d - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stderr]      9:     0x639d1bb841ec - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stderr]     10:     0x639d1bb83f44 - core[a373ad73a504971]::option::expect_failed
[INFO] [stderr]     11:     0x639d1bb38ef3 - <core[a373ad73a504971]::option::Option<&build_script_build[aae15b4e721631aa]::Mapping>>::expect
[INFO] [stderr]     12:     0x639d1bb381d6 - build_script_build[aae15b4e721631aa]::main
[INFO] [stderr]     13:     0x639d1bb39c73 - <fn() as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     14:     0x639d1bb32256 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     15:     0x639d1bb32419 - std[617be2ca0a6fd877]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     16:     0x639d1bb6dc78 - std[617be2ca0a6fd877]::rt::lang_start_internal
[INFO] [stderr]     17:     0x639d1bb320f1 - std[617be2ca0a6fd877]::rt::lang_start::<()>
[INFO] [stderr]     18:     0x639d1bb39e55 - main
[INFO] [stderr]     19:     0x766f21310601 - <unknown>
[INFO] [stderr]     20:     0x766f21310718 - __libc_start_main
[INFO] [stderr]     21:     0x639d1bb31de5 - _start
[INFO] [stderr]     22:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "c005deeca86f7efb508b663cfe2f2e177b465a366b0ed008e6a8eb6208d1be52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c005deeca86f7efb508b663cfe2f2e177b465a366b0ed008e6a8eb6208d1be52", kill_on_drop: false }`
[INFO] [stdout] c005deeca86f7efb508b663cfe2f2e177b465a366b0ed008e6a8eb6208d1be52
