[INFO] cloning repository https://github.com/ebroto/cargo-minver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ebroto/cargo-minver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febroto%2Fcargo-minver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febroto%2Fcargo-minver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ecc4e60758d1e41d92ef7c2d22e49b5b4e18ae8
[INFO] testing ebroto/cargo-minver against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febroto%2Fcargo-minver" "/workspace/builds/worker-26/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-26/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ebroto/cargo-minver on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-26/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/ebroto/cargo-minver
[INFO] finished tweaking git repo https://github.com/ebroto/cargo-minver
[INFO] tweaked toml for git repo https://github.com/ebroto/cargo-minver written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate git repo https://github.com/ebroto/cargo-minver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 872cb378ed7f34945d3dd2f82d0fa677fae2aabc330e73696cb37474a8ce2c8d
[INFO] running `Command { std: "docker" "start" "-a" "872cb378ed7f34945d3dd2f82d0fa677fae2aabc330e73696cb37474a8ce2c8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "872cb378ed7f34945d3dd2f82d0fa677fae2aabc330e73696cb37474a8ce2c8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "872cb378ed7f34945d3dd2f82d0fa677fae2aabc330e73696cb37474a8ce2c8d", kill_on_drop: false }`
[INFO] [stdout] 872cb378ed7f34945d3dd2f82d0fa677fae2aabc330e73696cb37474a8ce2c8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81765ec70c5559fc248f794bbb39597b503683ff7269ecf3620b7ac8e8eccba8
[INFO] running `Command { std: "docker" "start" "-a" "81765ec70c5559fc248f794bbb39597b503683ff7269ecf3620b7ac8e8eccba8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cargo-minver v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr] error: failed to run custom build command for `cargo-minver v0.0.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/cargo-minver-010e2c204ae14b5e/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   info: downloading component 'rustc-dev'
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: cleaning up cached downloads
[INFO] [stderr] 
[INFO] [stderr]   Caused by:
[INFO] [stderr]       Read-only file system (os error 30)', download/src/lib.rs:130:14
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x558adb3e1650 - std::backtrace_rs::backtrace::libunwind::trace::h63b7a90188ab5fb3
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x558adb3e1650 - std::backtrace_rs::backtrace::trace_unsynchronized::h80aefbf9b851eca7
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x558adb3e1650 - std::sys_common::backtrace::_print_fmt::hbef05ae4237a4d72
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x558adb3e1650 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h28abce2fdb9884c2
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x558adb03db4f - core::fmt::write::h3b84512577ca38a8
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/core/src/fmt/mod.rs:1092:17
[INFO] [stderr]      5:     0x558adb3e0f31 - std::io::Write::write_fmt::h465f8feea02e2aa1
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/io/mod.rs:1572:15
[INFO] [stderr]      6:     0x558adb3e0935 - std::sys_common::backtrace::_print::h525280ee0d29bdde
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x558adb3e0935 - std::sys_common::backtrace::print::h1f0f5b9f3ef8fb78
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x558adb3e0935 - std::panicking::default_hook::{{closure}}::ha5838f6faa4a5a8f
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x558adb3dfe37 - std::panicking::default_hook::hfb9fe98acb0dcb3b
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x558adb3df9dc - std::panicking::rust_panic_with_hook::hb89f5f19036e6af8
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:595:17
[INFO] [stderr]     11:     0x558adb3fcda8 - std::panicking::begin_panic_handler::{{closure}}::h119e7951427f41da
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x558adb3fcd1c - std::sys_common::backtrace::__rust_end_short_backtrace::hce386c44bf47a128
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x558adb3fcccd - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x558adafbad00 - core::panicking::panic_fmt::h2242888e8769cd33
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x558adafbb3f2 - core::option::expect_none_failed::hb1edf11f73e63728
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/core/src/option.rs:1329:5
[INFO] [stderr]     16:     0x558adb2e89cf - rustup::utils::utils::download_file_with_resume::h93a3c02897311476
[INFO] [stderr]     17:     0x558adb2fe22a - rustup::dist::manifestation::Manifestation::update::hea52b46f9b6744a0
[INFO] [stderr]     18:     0x558adb3a7b5b - rustup::toolchain::DistributableToolchain::add_component::h1daaabb23dc33832
[INFO] [stderr]     19:     0x558adb389cc5 - rustup::cli::rustup_mode::main::h3d75d7ddeef88c66
[INFO] [stderr]     20:     0x558adafd074e - rustup_init::main::hcf1ce6ee9e71e489
[INFO] [stderr]     21:     0x558adafce803 - std::sys_common::backtrace::__rust_begin_short_backtrace::h18fd16721cd8cbad
[INFO] [stderr]     22:     0x558adafd55e6 - main
[INFO] [stderr]     23:     0x7f95233fe0b3 - __libc_start_main
[INFO] [stderr]     24:     0x558adafce6e5 - <unknown>
[INFO] [stderr]   thread 'main' panicked at 'failed to read rust-toolchain file: Os { code: 2, kind: NotFound, message: "No such file or directory" }', build.rs:16:73
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55c98c8498b0 - std::backtrace_rs::backtrace::libunwind::trace::hff4d1766e93f64f1
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55c98c8498b0 - std::backtrace_rs::backtrace::trace_unsynchronized::h56bbc8eb78770bcb
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55c98c8498b0 - std::sys_common::backtrace::_print_fmt::h5c8e75464faca780
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55c98c8498b0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h48b88277def8b362
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55c98c8666dc - core::fmt::write::h3381b3176fe2b3d3
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]      5:     0x55c98c848085 - std::io::Write::write_fmt::hd42607e5d8e44db0
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/io/mod.rs:1665:15
[INFO] [stderr]      6:     0x55c98c84b4eb - std::sys_common::backtrace::_print::ha537687d6c17dd0d
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55c98c84b4eb - std::sys_common::backtrace::print::h61376ae57d131d72
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55c98c84b4eb - std::panicking::default_hook::{{closure}}::h0f7208c0b9644a54
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55c98c84afc1 - std::panicking::default_hook::hdac7fc06578c14ce
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55c98c84bbb4 - std::panicking::rust_panic_with_hook::h72b21c283da3d1ef
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x55c98c84b697 - std::panicking::begin_panic_handler::{{closure}}::he5778f1729cff84a
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x55c98c849d8c - std::sys_common::backtrace::__rust_end_short_backtrace::h2d11ca8b453b4b1d
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55c98c84b5f9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x55c98c8311d1 - core::panicking::panic_fmt::hf9de31d4acbce4db
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55c98c831263 - core::result::unwrap_failed::ha0c84e81219e5878
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/result.rs:1599:5
[INFO] [stderr]     16:     0x55c98c836086 - core::result::Result<T,E>::expect::h5ab115671276dd2f
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/result.rs:1241:23
[INFO] [stderr]     17:     0x55c98c833ec7 - build_script_build::main::h0b5f6df4a2b6ac62
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:16:36
[INFO] [stderr]     18:     0x55c98c834e1b - core::ops::function::FnOnce::call_once::h291c6dbe91f1d086
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55c98c835c8e - std::sys_common::backtrace::__rust_begin_short_backtrace::he81daaef91b208e3
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x55c98c833d41 - std::rt::lang_start::{{closure}}::hbde9a8b34614e01a
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:63:18
[INFO] [stderr]     21:     0x55c98c84c0ba - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::ha88a7d1a4d24e549
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55c98c84c0ba - std::panicking::try::do_call::hd3b1d7740607ccc7
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stderr]     23:     0x55c98c84c0ba - std::panicking::try::h0ee8c65ac7461507
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stderr]     24:     0x55c98c84c0ba - std::panic::catch_unwind::head47f0de4ccd838
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stderr]     25:     0x55c98c84c0ba - std::rt::lang_start_internal::{{closure}}::hbc7de8ec820ac085
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:45:48
[INFO] [stderr]     26:     0x55c98c84c0ba - std::panicking::try::do_call::h2609e52e8bad4a7b
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:401:40
[INFO] [stderr]     27:     0x55c98c84c0ba - std::panicking::try::hd0929f0b603e0389
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panicking.rs:365:19
[INFO] [stderr]     28:     0x55c98c84c0ba - std::panic::catch_unwind::h27902b81c3e47571
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/panic.rs:434:14
[INFO] [stderr]     29:     0x55c98c84c0ba - std::rt::lang_start_internal::h3fb2d794dd391e3e
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:45:20
[INFO] [stderr]     30:     0x55c98c833d10 - std::rt::lang_start::h99178290f330daef
[INFO] [stderr]                                  at /rustc/53fd98ca776cb875bc9e5514f56b52eb74f9e7a9/library/std/src/rt.rs:62:5
[INFO] [stderr]     31:     0x55c98c83410c - main
[INFO] [stderr]     32:     0x7fef50f9d0b3 - __libc_start_main
[INFO] [stderr]     33:     0x55c98c83192e - _start
[INFO] [stderr]     34:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "81765ec70c5559fc248f794bbb39597b503683ff7269ecf3620b7ac8e8eccba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81765ec70c5559fc248f794bbb39597b503683ff7269ecf3620b7ac8e8eccba8", kill_on_drop: false }`
[INFO] [stdout] 81765ec70c5559fc248f794bbb39597b503683ff7269ecf3620b7ac8e8eccba8
