[INFO] fetching crate irmin 0.3.3...
[INFO] testing irmin-0.3.3 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate irmin 0.3.3 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate irmin 0.3.3
[INFO] finished tweaking crates.io crate irmin 0.3.3
[INFO] tweaked toml for crates.io crate irmin 0.3.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate irmin 0.3.3 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] crate crates.io crate irmin 0.3.3 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.136
[INFO] [stderr]   Downloaded serde_json v1.0.79
[INFO] [stderr]   Downloaded which v4.2.4
[INFO] [stderr]   Downloaded libloading v0.7.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.24
[INFO] [stderr]   Downloaded clang-sys v1.3.1
[INFO] [stderr]   Downloaded serde v1.0.136
[INFO] [stderr]   Downloaded syn v1.0.64
[INFO] [stderr]   Downloaded regex v1.4.6
[INFO] [stderr]   Downloaded libc v0.2.91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 456cb17a584673572e8660983ec174e67f650cbd609965454f43c2e9ca3ac4ab
[INFO] running `Command { std: "docker" "start" "456cb17a584673572e8660983ec174e67f650cbd609965454f43c2e9ca3ac4ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "456cb17a584673572e8660983ec174e67f650cbd609965454f43c2e9ca3ac4ab", 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" "456cb17a584673572e8660983ec174e67f650cbd609965454f43c2e9ca3ac4ab" "/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" "456cb17a584673572e8660983ec174e67f650cbd609965454f43c2e9ca3ac4ab", 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" "456cb17a584673572e8660983ec174e67f650cbd609965454f43c2e9ca3ac4ab" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling clang-sys v1.3.1
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling bindgen v0.59.2
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v4.2.4
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling irmin v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `irmin v0.3.3 (/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/irmin-95b5edd260c6daff/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (731) panicked at build.rs:16:5:
[INFO] [stderr]   Unable to locate libirmin installation, try `opam install libirmin` or setting LIBIRMIN_PREFIX
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x62ef3295a251 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x62ef329704ea - core[df12db4294e9bfd3]::fmt::write
[INFO] [stderr]      2:     0x62ef3295f35c - <std[70759c8f55707aa4]::sys::stdio::unix::Stderr as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x62ef3293a786 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x62ef32954b61 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stderr]      5:     0x62ef32954e8b - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x62ef3293a864 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x62ef329334e9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x62ef3293b05d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stderr]      9:     0x62ef32970d0c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stderr]     10:     0x62ef326022c3 - build_script_build[810e05801320a1f0]::find_path::<std[70759c8f55707aa4]::env::VarError>
[INFO] [stderr]     11:     0x62ef32603c8c - build_script_build[810e05801320a1f0]::main
[INFO] [stderr]     12:     0x62ef32605b2b - <fn() as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     13:     0x62ef3260316e - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     14:     0x62ef32603269 - std[70759c8f55707aa4]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     15:     0x62ef32953f89 - std[70759c8f55707aa4]::rt::lang_start_internal
[INFO] [stderr]     16:     0x62ef32602eb1 - std[70759c8f55707aa4]::rt::lang_start::<()>
[INFO] [stderr]     17:     0x62ef32605ec5 - main
[INFO] [stderr]     18:     0x7f1850576601 - <unknown>
[INFO] [stderr]     19:     0x7f1850576718 - __libc_start_main
[INFO] [stderr]     20:     0x62ef32602045 - _start
[INFO] [stderr]     21:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "456cb17a584673572e8660983ec174e67f650cbd609965454f43c2e9ca3ac4ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "456cb17a584673572e8660983ec174e67f650cbd609965454f43c2e9ca3ac4ab", kill_on_drop: false }`
[INFO] [stdout] 456cb17a584673572e8660983ec174e67f650cbd609965454f43c2e9ca3ac4ab
