[INFO] fetching crate prolog_parser_rebis 0.8.68...
[INFO] checking prolog_parser_rebis-0.8.68 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate prolog_parser_rebis 0.8.68 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate prolog_parser_rebis 0.8.68 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prolog_parser_rebis 0.8.68
[INFO] finished tweaking crates.io crate prolog_parser_rebis 0.8.68
[INFO] tweaked toml for crates.io crate prolog_parser_rebis 0.8.68 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lexical v2.2.4
[INFO] [stderr]   Downloaded lexical-core v0.4.8
[INFO] [stderr]   Downloaded unicode_reader v1.0.1
[INFO] [stderr]   Downloaded num-rug-adapter v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c4c411d5b051685e60e243da09bcf72a065570e3f25a4571aefc7ca4c503f1ea
[INFO] running `Command { std: "docker" "start" "-a" "c4c411d5b051685e60e243da09bcf72a065570e3f25a4571aefc7ca4c503f1ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4c411d5b051685e60e243da09bcf72a065570e3f25a4571aefc7ca4c503f1ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4c411d5b051685e60e243da09bcf72a065570e3f25a4571aefc7ca4c503f1ea", kill_on_drop: false }`
[INFO] [stdout] c4c411d5b051685e60e243da09bcf72a065570e3f25a4571aefc7ca4c503f1ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74e26646f3a45b49e95d84ab67131f5329453d4dceeef23b9ec20df12d73f8be
[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" "74e26646f3a45b49e95d84ab67131f5329453d4dceeef23b9ec20df12d73f8be", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.5
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling az v1.1.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling rug v1.12.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking unicode_reader v1.0.1
[INFO] [stderr]     Checking arrayvec v0.4.12
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling lexical-core v0.4.8
[INFO] [stderr]    Compiling lexical v2.2.4
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking ordered-float v0.5.2
[INFO] [stderr]     Checking prolog_parser_rebis v0.8.68 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `prolog_parser`
[INFO] [stdout]  --> tests/parse_tokens.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate prolog_parser;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prolog_parser_rebis`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0463]: can't find crate for `prolog_parser`
[INFO] [stdout]  --> tests/bom.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate prolog_parser;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "74e26646f3a45b49e95d84ab67131f5329453d4dceeef23b9ec20df12d73f8be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74e26646f3a45b49e95d84ab67131f5329453d4dceeef23b9ec20df12d73f8be", kill_on_drop: false }`
[INFO] [stdout] 74e26646f3a45b49e95d84ab67131f5329453d4dceeef23b9ec20df12d73f8be