[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] checking ebroto/cargo-minver against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febroto%2Fcargo-minver" "/workspace/builds/worker-35/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-35/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ebroto/cargo-minver on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-35/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-35/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" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded structopt-derive v0.4.2
[INFO] [stderr]   Downloaded proc-macro-error-attr v0.4.8
[INFO] [stderr]   Downloaded proc-macro-error v0.4.8
[INFO] [stderr]   Downloaded structopt v0.3.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69958a0f710b03e501802886ba99704fc29735f16b0bd2791ba33f6bfe72ac49
[INFO] running `Command { std: "docker" "start" "-a" "69958a0f710b03e501802886ba99704fc29735f16b0bd2791ba33f6bfe72ac49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69958a0f710b03e501802886ba99704fc29735f16b0bd2791ba33f6bfe72ac49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69958a0f710b03e501802886ba99704fc29735f16b0bd2791ba33f6bfe72ac49", kill_on_drop: false }`
[INFO] [stdout] 69958a0f710b03e501802886ba99704fc29735f16b0bd2791ba33f6bfe72ac49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b678f105eae79dfddc44f4929217f75acf8cff7f402d4e11b7c49f964412409e
[INFO] running `Command { std: "docker" "start" "-a" "b678f105eae79dfddc44f4929217f75acf8cff7f402d4e11b7c49f964412409e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 anyhow v1.0.26
[INFO] [stderr]    Compiling cargo-minver v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[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-71e2f434d6ab5785/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:     0x55d13d320650 - 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:     0x55d13d320650 - 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:     0x55d13d320650 - std::sys_common::backtrace::_print_fmt::hbef05ae4237a4d72
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55d13d320650 - <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:     0x55d13cf7cb4f - core::fmt::write::h3b84512577ca38a8
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/core/src/fmt/mod.rs:1092:17
[INFO] [stderr]      5:     0x55d13d31ff31 - std::io::Write::write_fmt::h465f8feea02e2aa1
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/io/mod.rs:1572:15
[INFO] [stderr]      6:     0x55d13d31f935 - std::sys_common::backtrace::_print::h525280ee0d29bdde
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55d13d31f935 - std::sys_common::backtrace::print::h1f0f5b9f3ef8fb78
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55d13d31f935 - std::panicking::default_hook::{{closure}}::ha5838f6faa4a5a8f
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55d13d31ee37 - std::panicking::default_hook::hfb9fe98acb0dcb3b
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55d13d31e9dc - std::panicking::rust_panic_with_hook::hb89f5f19036e6af8
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:595:17
[INFO] [stderr]     11:     0x55d13d33bda8 - std::panicking::begin_panic_handler::{{closure}}::h119e7951427f41da
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x55d13d33bd1c - 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:     0x55d13d33bccd - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55d13cef9d00 - core::panicking::panic_fmt::h2242888e8769cd33
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55d13cefa3f2 - core::option::expect_none_failed::hb1edf11f73e63728
[INFO] [stderr]                                  at /rustc/9bc8c42bb2f19e745a63f3445f1ac248fb015e53/library/core/src/option.rs:1329:5
[INFO] [stderr]     16:     0x55d13d2279cf - rustup::utils::utils::download_file_with_resume::h93a3c02897311476
[INFO] [stderr]     17:     0x55d13d23d22a - rustup::dist::manifestation::Manifestation::update::hea52b46f9b6744a0
[INFO] [stderr]     18:     0x55d13d2e6b5b - rustup::toolchain::DistributableToolchain::add_component::h1daaabb23dc33832
[INFO] [stderr]     19:     0x55d13d2c8cc5 - rustup::cli::rustup_mode::main::h3d75d7ddeef88c66
[INFO] [stderr]     20:     0x55d13cf0f74e - rustup_init::main::hcf1ce6ee9e71e489
[INFO] [stderr]     21:     0x55d13cf0d803 - std::sys_common::backtrace::__rust_begin_short_backtrace::h18fd16721cd8cbad
[INFO] [stderr]     22:     0x55d13cf145e6 - main
[INFO] [stderr]     23:     0x7f7aa5cae0b3 - __libc_start_main
[INFO] [stderr]     24:     0x55d13cf0d6e5 - <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:     0x5624f80018b0 - std::backtrace_rs::backtrace::libunwind::trace::ha0ad43e8a952bfe7
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x5624f80018b0 - std::backtrace_rs::backtrace::trace_unsynchronized::h6830419c0c4130dc
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5624f80018b0 - std::sys_common::backtrace::_print_fmt::h8f3516631ffa1ef5
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x5624f80018b0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he1640d5f0d93f618
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x5624f801e6dc - core::fmt::write::h88012e1f01caeebf
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/fmt/mod.rs:1115:17
[INFO] [stderr]      5:     0x5624f7ffff35 - std::io::Write::write_fmt::h360fa85b30182555
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/io/mod.rs:1665:15
[INFO] [stderr]      6:     0x5624f80034eb - std::sys_common::backtrace::_print::ha1f00492f406a015
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x5624f80034eb - std::sys_common::backtrace::print::hd54561b13feb6af3
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x5624f80034eb - std::panicking::default_hook::{{closure}}::h84fe124cd0864662
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x5624f8002fc1 - std::panicking::default_hook::h5a8e74a76ce290a7
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x5624f8003bb4 - std::panicking::rust_panic_with_hook::h67c812a4fe9d4c91
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:622:17
[INFO] [stderr]     11:     0x5624f8003697 - std::panicking::begin_panic_handler::{{closure}}::h33f9c1b96af300d7
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:519:13
[INFO] [stderr]     12:     0x5624f8001dac - std::sys_common::backtrace::__rust_end_short_backtrace::h51bae64be5921f0e
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x5624f80035f9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:515:5
[INFO] [stderr]     14:     0x5624f7fe91d1 - core::panicking::panic_fmt::h12a3a3c256485fca
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x5624f7fe9263 - core::result::unwrap_failed::h2d8d0952e3250de9
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/result.rs:1599:5
[INFO] [stderr]     16:     0x5624f7fee096 - core::result::Result<T,E>::expect::hece9877cf90ebcfc
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/result.rs:1241:23
[INFO] [stderr]     17:     0x5624f7febed7 - build_script_build::main::h0600d5a4ad110afc
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:16:36
[INFO] [stderr]     18:     0x5624f7fecdeb - core::ops::function::FnOnce::call_once::hdcaad4cd69828a91
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x5624f7fec12e - std::sys_common::backtrace::__rust_begin_short_backtrace::hb7e9396313c2774f
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x5624f7febd51 - std::rt::lang_start::{{closure}}::h3883ac1a27d65398
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:63:18
[INFO] [stderr]     21:     0x5624f80040ba - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::ha9408abe89f69dc4
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x5624f80040ba - std::panicking::try::do_call::h5b0cc9e9102acb65
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:401:40
[INFO] [stderr]     23:     0x5624f80040ba - std::panicking::try::hddc7f8229138b3ba
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:365:19
[INFO] [stderr]     24:     0x5624f80040ba - std::panic::catch_unwind::hfa401ff8bab2986e
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:434:14
[INFO] [stderr]     25:     0x5624f80040ba - std::rt::lang_start_internal::{{closure}}::h8163422320d11405
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:45:48
[INFO] [stderr]     26:     0x5624f80040ba - std::panicking::try::do_call::hc742cc7bb4f0fb20
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:401:40
[INFO] [stderr]     27:     0x5624f80040ba - std::panicking::try::ha37d8d2dd1acf7d3
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:365:19
[INFO] [stderr]     28:     0x5624f80040ba - std::panic::catch_unwind::h8a5381d5ecf437bc
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:434:14
[INFO] [stderr]     29:     0x5624f80040ba - std::rt::lang_start_internal::h7e2cee8c90d4a4d3
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:45:20
[INFO] [stderr]     30:     0x5624f7febd20 - std::rt::lang_start::h4f7ebd3ec5c79cd1
[INFO] [stderr]                                  at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:62:5
[INFO] [stderr]     31:     0x5624f7fec11c - main
[INFO] [stderr]     32:     0x7fb26dd470b3 - __libc_start_main
[INFO] [stderr]     33:     0x5624f7fe992e - _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" "b678f105eae79dfddc44f4929217f75acf8cff7f402d4e11b7c49f964412409e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b678f105eae79dfddc44f4929217f75acf8cff7f402d4e11b7c49f964412409e", kill_on_drop: false }`
[INFO] [stdout] b678f105eae79dfddc44f4929217f75acf8cff7f402d4e11b7c49f964412409e
