[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 try#6f12b8fe67b4eed2e838dab803ed9493b9d62c0f for pr-79073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Furanusjr%2Fmolt" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/uranusjr/molt on toolchain 6f12b8fe67b4eed2e838dab803ed9493b9d62c0f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "read-manifest" "--manifest-path" "Cargo.toml", 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-9/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" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dunce v1.0.0
[INFO] [stderr]   Downloaded constant_time_eq v0.1.3
[INFO] [stderr]   Downloaded blake2-rfc v0.2.18
[INFO] [stderr]   Downloaded assert-json-diff v1.0.0
[INFO] [stderr]   Downloaded dirs v1.0.5
[INFO] [stderr]   Downloaded cc v1.0.35
[INFO] [stderr]   Downloaded serde_json v1.0.39
[INFO] [stderr]   Downloaded serde_derive v1.0.90
[INFO] [stderr]   Downloaded walkdir v2.2.7
[INFO] [stderr]   Downloaded serde v1.0.90
[INFO] [stderr]   Downloaded redox_users v0.3.0
[INFO] [stderr]   Downloaded unindent v0.1.3
[INFO] [stderr]   Downloaded argon2rs v0.2.5
[INFO] [stderr]   Downloaded libc v0.2.51
[INFO] [stderr]   Downloaded term v0.5.2
[INFO] [stderr]   Downloaded backtrace v0.3.15
[INFO] [stderr]   Downloaded csv v1.0.6
[INFO] [stderr]   Downloaded rust-embed-impl v4.3.0
[INFO] [stderr]   Downloaded rust-embed v4.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7814b37b4e6f81237cc584bbf10895795bafd2b3f67ff64ea6710f5b9c4ccb5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e7814b37b4e6f81237cc584bbf10895795bafd2b3f67ff64ea6710f5b9c4ccb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7814b37b4e6f81237cc584bbf10895795bafd2b3f67ff64ea6710f5b9c4ccb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7814b37b4e6f81237cc584bbf10895795bafd2b3f67ff64ea6710f5b9c4ccb5", kill_on_drop: false }`
[INFO] [stdout] e7814b37b4e6f81237cc584bbf10895795bafd2b3f67ff64ea6710f5b9c4ccb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+6f12b8fe67b4eed2e838dab803ed9493b9d62c0f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adae388609f95867a2d7b215fc93a9ba901740fe738de74992068d6b491c678d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "adae388609f95867a2d7b215fc93a9ba901740fe738de74992068d6b491c678d", 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 syn v0.15.30
[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 cfg-if v0.1.7
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.5
[INFO] [stderr]     Checking encode_unicode v0.3.5
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking unindent v0.1.3
[INFO] [stderr]     Checking dunce v1.0.0
[INFO] [stderr]     Checking rand_jitter v0.1.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]    Compiling rust-embed-impl v4.3.0
[INFO] [stderr]     Checking url v1.7.2
[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]    Compiling 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-d38a12b5fba8e83c/build-script-build` (exit code: 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/foreign
[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/foreign/__init__.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/_backports.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/__init__.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/python/molt/locks.py
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/vendor/molt.txt
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/vendor/virtenv.txt
[INFO] [stderr]   cargo:rerun-if-changed=/opt/rustwide/workdir/vendor/__main__.py
[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" "adae388609f95867a2d7b215fc93a9ba901740fe738de74992068d6b491c678d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adae388609f95867a2d7b215fc93a9ba901740fe738de74992068d6b491c678d", kill_on_drop: false }`
[INFO] [stdout] adae388609f95867a2d7b215fc93a9ba901740fe738de74992068d6b491c678d