[INFO] fetching crate tab 0.5.7...
[INFO] testing tab-0.5.7 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate tab 0.5.7 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate tab 0.5.7
[INFO] finished tweaking crates.io crate tab 0.5.7
[INFO] tweaked toml for crates.io crate tab 0.5.7 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tab 0.5.7 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 tab 0.5.7 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded which v4.0.2
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[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] f02efe98870bb1992be0b09ce33dd75112dee3f0972e7e711bae9100dba2ced9
[INFO] running `Command { std: "docker" "start" "f02efe98870bb1992be0b09ce33dd75112dee3f0972e7e711bae9100dba2ced9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f02efe98870bb1992be0b09ce33dd75112dee3f0972e7e711bae9100dba2ced9", 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" "f02efe98870bb1992be0b09ce33dd75112dee3f0972e7e711bae9100dba2ced9" "/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" "f02efe98870bb1992be0b09ce33dd75112dee3f0972e7e711bae9100dba2ced9", 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" "f02efe98870bb1992be0b09ce33dd75112dee3f0972e7e711bae9100dba2ced9" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling futures-core v0.3.12
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-sink v0.3.12
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling futures-task v0.3.12
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling futures-io v0.3.12
[INFO] [stderr]    Compiling futures-channel v0.3.12
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling tinyvec v1.1.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling pin-project-lite v0.1.11
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling percent-encoding v2.1.0
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[INFO] [stderr]    Compiling rand v0.7.3
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[INFO] [stderr]    Compiling utf-8 v0.7.5
[INFO] [stderr]    Compiling arc-swap v0.4.8
[INFO] [stderr]    Compiling dirs-sys v0.3.5
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[INFO] [stderr]    Compiling nix v0.19.1
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling mio v0.7.7
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling futures v0.1.30
[INFO] [stderr]    Compiling tungstenite v0.11.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling signal-hook v0.1.17
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling simplelog v0.8.0
[INFO] [stderr]    Compiling tokio-io v0.1.13
[INFO] [stderr]    Compiling terminal_size v0.1.16
[INFO] [stderr]    Compiling log-panics v2.0.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling ascii v0.9.3
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling console v0.13.0
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling combine v3.8.1
[INFO] [stderr]    Compiling crossterm v0.19.0
[INFO] [stderr]    Compiling simplelog v0.9.0
[INFO] [stderr]    Compiling fuzzy-matcher v0.3.7
[INFO] [stderr]    Compiling zeroize v0.9.3
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling dialoguer v0.7.1
[INFO] [stderr]    Compiling futures-macro v0.3.12
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling futures-util v0.3.12
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling tab v0.5.7 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling typed-builder v0.8.0
[INFO] [stderr] error: failed to run custom build command for `tab v0.5.7 (/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/tab-8e12bc1381aa358b/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (2538) panicked at build.rs:13:45:
[INFO] [stderr]   failed to create ./target/completions: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x60033583c8e1 - <<std[70759c8f55707aa4]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[df12db4294e9bfd3]::fmt::Display>::fmt
[INFO] [stderr]      1:     0x60033584d35a - core[df12db4294e9bfd3]::fmt::write
[INFO] [stderr]      2:     0x60033583fdec - <std[70759c8f55707aa4]::sys::stdio::unix::Stderr as core[df12db4294e9bfd3]::io::write::Write>::write_fmt
[INFO] [stderr]      3:     0x600335826156 - std[70759c8f55707aa4]::panicking::default_hook::{closure#0}
[INFO] [stderr]      4:     0x6003358393f1 - std[70759c8f55707aa4]::panicking::default_hook
[INFO] [stderr]      5:     0x6003358395ab - std[70759c8f55707aa4]::panicking::panic_with_hook
[INFO] [stderr]      6:     0x600335826202 - std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}
[INFO] [stderr]      7:     0x60033581f2d9 - std[70759c8f55707aa4]::sys::backtrace::__rust_end_short_backtrace::<std[70759c8f55707aa4]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]      8:     0x60033582697d - __rustc[8fa7c3cbc660c2b3]::rust_begin_unwind
[INFO] [stderr]      9:     0x60033584da8c - core[df12db4294e9bfd3]::panicking::panic_fmt
[INFO] [stderr]     10:     0x60033584d862 - core[df12db4294e9bfd3]::result::unwrap_failed
[INFO] [stderr]     11:     0x600335806400 - <core[df12db4294e9bfd3]::result::Result<(), core[df12db4294e9bfd3]::io::error::Error>>::expect
[INFO] [stderr]     12:     0x6003357de419 - build_script_build[9c488ceec212d8b6]::main
[INFO] [stderr]     13:     0x6003357defd3 - <fn() as core[df12db4294e9bfd3]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     14:     0x6003357dcc7e - std[70759c8f55707aa4]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     15:     0x6003357dcc99 - std[70759c8f55707aa4]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     16:     0x600335838b59 - std[70759c8f55707aa4]::rt::lang_start_internal
[INFO] [stderr]     17:     0x6003357dcc71 - std[70759c8f55707aa4]::rt::lang_start::<()>
[INFO] [stderr]     18:     0x6003357df155 - main
[INFO] [stderr]     19:     0x7d9ee5c15601 - <unknown>
[INFO] [stderr]     20:     0x7d9ee5c15718 - __libc_start_main
[INFO] [stderr]     21:     0x6003357dc1f5 - _start
[INFO] [stderr]     22:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f02efe98870bb1992be0b09ce33dd75112dee3f0972e7e711bae9100dba2ced9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f02efe98870bb1992be0b09ce33dd75112dee3f0972e7e711bae9100dba2ced9", kill_on_drop: false }`
[INFO] [stdout] f02efe98870bb1992be0b09ce33dd75112dee3f0972e7e711bae9100dba2ced9
