[INFO] cloning repository https://github.com/uranusjr/molt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/uranusjr/molt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furanusjr%2Fmolt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furanusjr%2Fmolt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 43f17bf54d6c6fca62836676a926b5a27d602095
[INFO] checking uranusjr/molt against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furanusjr%2Fmolt" "/workspace/builds/worker-103/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-103/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/uranusjr/molt on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/uranusjr/molt
[INFO] finished tweaking git repo https://github.com/uranusjr/molt
[INFO] tweaked toml for git repo https://github.com/uranusjr/molt written to /workspace/builds/worker-103/source/Cargo.toml
[INFO] crate git repo https://github.com/uranusjr/molt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3b0b4f29011548d0048cd60869866ff4c01b6d51cc4bd52c772b211162d64d1
[INFO] running `Command { std: "docker" "start" "-a" "a3b0b4f29011548d0048cd60869866ff4c01b6d51cc4bd52c772b211162d64d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3b0b4f29011548d0048cd60869866ff4c01b6d51cc4bd52c772b211162d64d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3b0b4f29011548d0048cd60869866ff4c01b6d51cc4bd52c772b211162d64d1", kill_on_drop: false }`
[INFO] [stdout] a3b0b4f29011548d0048cd60869866ff4c01b6d51cc4bd52c772b211162d64d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3aff21c50381c434aa0f4f24d2e37f75f5275d52a947b5630a968ff2ceace59c
[INFO] running `Command { std: "docker" "start" "-a" "3aff21c50381c434aa0f4f24d2e37f75f5275d52a947b5630a968ff2ceace59c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]    Compiling cc v1.0.35
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling rustc-demangle v0.1.13
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling regex v1.1.5
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking encode_unicode v0.3.5
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking unindent v0.1.3
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking dunce v1.0.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]    Compiling rust-embed-impl v4.3.0
[INFO] [stderr]     Checking tempfile v3.0.7
[INFO] [stderr]     Checking rust-embed v4.3.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]     Checking which v2.0.1
[INFO] [stderr]    Compiling molt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `molt v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/molt-a8d510a2d0962709/build-script-build` (exit status: 1)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rereun-if-changed=/opt/rustwide/workdir/target
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/__init__.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/locks.schema.json
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/foreign
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/foreign/__init__.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/foreign/pipfile_lock.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/foreign/poetry_lock.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/locks.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/_backports.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/vendor/__main__.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/vendor/virtenv.txt
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/vendor/molt.txt
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/vendor/packaging.txt
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Traceback (most recent call last):
[INFO] [stderr]     File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
[INFO] [stderr]       return _run_code(code, main_globals, None,
[INFO] [stderr]     File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
[INFO] [stderr]       exec(code, run_globals)
[INFO] [stderr]     File "/opt/rustwide/workdir/vendor/__main__.py", line 128, in <module>
[INFO] [stderr]       main()
[INFO] [stderr]     File "/opt/rustwide/workdir/vendor/__main__.py", line 115, in main
[INFO] [stderr]       os.makedirs(p)
[INFO] [stderr]     File "/usr/lib/python3.8/os.py", line 213, in makedirs
[INFO] [stderr]       makedirs(head, exist_ok=exist_ok)
[INFO] [stderr]     File "/usr/lib/python3.8/os.py", line 213, in makedirs
[INFO] [stderr]       makedirs(head, exist_ok=exist_ok)
[INFO] [stderr]     File "/usr/lib/python3.8/os.py", line 223, in makedirs
[INFO] [stderr]       mkdir(name, mode)
[INFO] [stderr]   OSError: [Errno 30] Read-only file system: '/opt/rustwide/workdir/target'
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3aff21c50381c434aa0f4f24d2e37f75f5275d52a947b5630a968ff2ceace59c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aff21c50381c434aa0f4f24d2e37f75f5275d52a947b5630a968ff2ceace59c", kill_on_drop: false }`
[INFO] [stdout] 3aff21c50381c434aa0f4f24d2e37f75f5275d52a947b5630a968ff2ceace59c