[INFO] fetching crate assemblylift-core-iomod 0.3.1...
[INFO] testing assemblylift-core-iomod-0.3.1 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate assemblylift-core-iomod 0.3.1 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate assemblylift-core-iomod 0.3.1 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate assemblylift-core-iomod 0.3.1
[INFO] finished tweaking crates.io crate assemblylift-core-iomod 0.3.1
[INFO] tweaked toml for crates.io crate assemblylift-core-iomod 0.3.1 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3fdbf2691769275858efeef2c0b416113a0ef8bc8ca09d5e136b1bc92380776
[INFO] running `Command { std: "docker" "start" "-a" "f3fdbf2691769275858efeef2c0b416113a0ef8bc8ca09d5e136b1bc92380776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3fdbf2691769275858efeef2c0b416113a0ef8bc8ca09d5e136b1bc92380776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3fdbf2691769275858efeef2c0b416113a0ef8bc8ca09d5e136b1bc92380776", kill_on_drop: false }`
[INFO] [stdout] f3fdbf2691769275858efeef2c0b416113a0ef8bc8ca09d5e136b1bc92380776
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a8ad3da5243225ca52ac6a9172b5e843547e3e25b8dc91b6e39bc8b6a546cad
[INFO] running `Command { std: "docker" "start" "-a" "1a8ad3da5243225ca52ac6a9172b5e843547e3e25b8dc91b6e39bc8b6a546cad", 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]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling futures-channel v0.3.18
[INFO] [stderr]    Compiling futures-sink v0.3.18
[INFO] [stderr]    Compiling futures-io v0.3.18
[INFO] [stderr]    Compiling futures-util v0.3.18
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling capnp v0.14.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]    Compiling mio v0.7.14
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling capnpc v0.14.4
[INFO] [stderr]    Compiling assemblylift-core-iomod v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `assemblylift-core-iomod v0.3.1 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/assemblylift-core-iomod-6b9e287c40451790/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rustc-env=RUSTC_VERSION=1.58.0-nightly
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   could not open file "src/iomod_capnp.rs" for writing: Read-only file system (os error 30)
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error { kind: Failed, description: "Error while trying to execute `capnp compile`: Failed: Read-only file system (os error 30).  Please verify that version 0.5.2 or higher of the capnp executable is installed on your system. See https://capnproto.org/install.html" }', build.rs:11:10
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55b33cb1b51c - std::backtrace_rs::backtrace::libunwind::trace::h793e05efd273d0f4
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stderr]      1:     0x55b33cb1b51c - std::backtrace_rs::backtrace::trace_unsynchronized::h640b7b86ff610c77
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55b33cb1b51c - std::sys_common::backtrace::_print_fmt::h362fa2a4f354f877
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55b33cb1b51c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf439e5ed84c74abd
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55b33cb3e0ec - core::fmt::write::h72801a82c94e6ff1
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/core/src/fmt/mod.rs:1149:17
[INFO] [stderr]      5:     0x55b33cb17ae5 - std::io::Write::write_fmt::h5562a8b6da0f0339
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/io/mod.rs:1697:15
[INFO] [stderr]      6:     0x55b33cb1cb20 - std::sys_common::backtrace::_print::hb29ddd998d02631c
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55b33cb1cb20 - std::sys_common::backtrace::print::h81965e3d7c90fbb6
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55b33cb1cb20 - std::panicking::default_hook::{{closure}}::h84db205ab6674b38
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panicking.rs:211:50
[INFO] [stderr]      9:     0x55b33cb1c6cb - std::panicking::default_hook::h1bf8bb4159936bca
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panicking.rs:228:9
[INFO] [stderr]     10:     0x55b33cb1d1d4 - std::panicking::rust_panic_with_hook::hf8e86850fbbd03b1
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panicking.rs:606:17
[INFO] [stderr]     11:     0x55b33cb1ccb0 - std::panicking::begin_panic_handler::{{closure}}::h590a0d6060ff866e
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panicking.rs:502:13
[INFO] [stderr]     12:     0x55b33cb1b9d4 - std::sys_common::backtrace::__rust_end_short_backtrace::h260b8bd1c848a03c
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/sys_common/backtrace.rs:139:18
[INFO] [stderr]     13:     0x55b33cb1cc19 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panicking.rs:498:5
[INFO] [stderr]     14:     0x55b33ca2e131 - core::panicking::panic_fmt::h7b8580d81fcbbacd
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/core/src/panicking.rs:106:14
[INFO] [stderr]     15:     0x55b33ca2e223 - core::result::unwrap_failed::h885d3f7beb571353
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/core/src/result.rs:1613:5
[INFO] [stderr]     16:     0x55b33ca2fab0 - core::result::Result<T,E>::unwrap::h9a8e65c8c7fb1121
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/core/src/result.rs:1295:23
[INFO] [stderr]     17:     0x55b33ca2fd2d - build_script_build::main::h34f10328dcc363b7
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:7:5
[INFO] [stderr]     18:     0x55b33ca2ffcb - core::ops::function::FnOnce::call_once::h6f8f8f84c6b0dc58
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55b33ca2f4ee - std::sys_common::backtrace::__rust_begin_short_backtrace::h1a1076e4fb123de5
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/sys_common/backtrace.rs:123:18
[INFO] [stderr]     20:     0x55b33ca2fdf1 - std::rt::lang_start::{{closure}}::hb068142db183dad5
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/rt.rs:145:18
[INFO] [stderr]     21:     0x55b33cb1ad61 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h42d3791e66d196c0
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55b33cb1ad61 - std::panicking::try::do_call::hc3bcb188e535517f
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panicking.rs:406:40
[INFO] [stderr]     23:     0x55b33cb1ad61 - std::panicking::try::hb1edf04d4a7097ab
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panicking.rs:370:19
[INFO] [stderr]     24:     0x55b33cb1ad61 - std::panic::catch_unwind::h75ed941ac0d36d57
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panic.rs:133:14
[INFO] [stderr]     25:     0x55b33cb1ad61 - std::rt::lang_start_internal::{{closure}}::hc702b3389af4cbea
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/rt.rs:128:48
[INFO] [stderr]     26:     0x55b33cb1ad61 - std::panicking::try::do_call::h53276a03c7fe2ebc
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panicking.rs:406:40
[INFO] [stderr]     27:     0x55b33cb1ad61 - std::panicking::try::ha9e37f45dc542517
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panicking.rs:370:19
[INFO] [stderr]     28:     0x55b33cb1ad61 - std::panic::catch_unwind::h182647595766fee7
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/panic.rs:133:14
[INFO] [stderr]     29:     0x55b33cb1ad61 - std::rt::lang_start_internal::h571831ebdba142de
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/rt.rs:128:20
[INFO] [stderr]     30:     0x55b33ca2fdc0 - std::rt::lang_start::hcf50d3ed26b483b1
[INFO] [stderr]                                  at /rustc/62efba8a050c64249dab942951bb28f710208bc8/library/std/src/rt.rs:144:17
[INFO] [stderr]     31:     0x55b33ca2fd8c - main
[INFO] [stderr]     32:     0x7fee562a60b3 - __libc_start_main
[INFO] [stderr]     33:     0x55b33ca2e8ae - _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" "1a8ad3da5243225ca52ac6a9172b5e843547e3e25b8dc91b6e39bc8b6a546cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a8ad3da5243225ca52ac6a9172b5e843547e3e25b8dc91b6e39bc8b6a546cad", kill_on_drop: false }`
[INFO] [stdout] 1a8ad3da5243225ca52ac6a9172b5e843547e3e25b8dc91b6e39bc8b6a546cad