[INFO] fetching crate rustproof 0.1.0...
[INFO] checking rustproof-0.1.0 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate rustproof 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rustproof 0.1.0 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustproof 0.1.0
[INFO] finished tweaking crates.io crate rustproof 0.1.0
[INFO] tweaked toml for crates.io crate rustproof 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lalrpop-intern v0.11.0
[INFO] [stderr]   Downloaded lalrpop-snap v0.11.0
[INFO] [stderr]   Downloaded lalrpop v0.11.0
[INFO] [stderr]   Downloaded rustproof-libsmt v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+7b3565da729099dbe807466fcd118fb2815986e0" "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] 5e1a7a20ee5f7fda578db26b3f4465c46ea5f3f78cf37b19377ad2df3177cc23
[INFO] running `Command { std: "docker" "start" "-a" "5e1a7a20ee5f7fda578db26b3f4465c46ea5f3f78cf37b19377ad2df3177cc23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e1a7a20ee5f7fda578db26b3f4465c46ea5f3f78cf37b19377ad2df3177cc23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e1a7a20ee5f7fda578db26b3f4465c46ea5f3f78cf37b19377ad2df3177cc23", kill_on_drop: false }`
[INFO] [stdout] 5e1a7a20ee5f7fda578db26b3f4465c46ea5f3f78cf37b19377ad2df3177cc23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 08d590106dde35174bb5c3cc4188bc45900a28599c9ed244e3cb3a4002876d90
[INFO] running `Command { std: "docker" "start" "-a" "08d590106dde35174bb5c3cc4188bc45900a28599c9ed244e3cb3a4002876d90", kill_on_drop: false }`
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking lalrpop-util v0.11.0
[INFO] [stderr]    Compiling petgraph v0.2.10
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking rustproof-libsmt v0.1.0
[INFO] [stderr]     Checking rustproof v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> src/lib.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[macro_use] extern crate syntax;
[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 `rustproof`
[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 `syntax`
[INFO] [stdout]   --> src/lib.rs:28:14
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[macro_use] extern crate syntax;
[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" "08d590106dde35174bb5c3cc4188bc45900a28599c9ed244e3cb3a4002876d90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08d590106dde35174bb5c3cc4188bc45900a28599c9ed244e3cb3a4002876d90", kill_on_drop: false }`
[INFO] [stdout] 08d590106dde35174bb5c3cc4188bc45900a28599c9ed244e3cb3a4002876d90