[INFO] fetching crate playpen 0.1.0...
[INFO] checking playpen-0.1.0 against master#0a8629bff642c3c3b84bb644c0099194f063b627 for pr-86231
[INFO] extracting crate playpen 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate playpen 0.1.0 on toolchain 0a8629bff642c3c3b84bb644c0099194f063b627
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate playpen 0.1.0
[INFO] finished tweaking crates.io crate playpen 0.1.0
[INFO] tweaked toml for crates.io crate playpen 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0a8629bff642c3c3b84bb644c0099194f063b627" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+0a8629bff642c3c3b84bb644c0099194f063b627" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95de2f4aa0670c396f277a6314d32bf8af169cf8922231cfdd73389c2d95dbdc
[INFO] running `Command { std: "docker" "start" "-a" "95de2f4aa0670c396f277a6314d32bf8af169cf8922231cfdd73389c2d95dbdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95de2f4aa0670c396f277a6314d32bf8af169cf8922231cfdd73389c2d95dbdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95de2f4aa0670c396f277a6314d32bf8af169cf8922231cfdd73389c2d95dbdc", kill_on_drop: false }`
[INFO] [stdout] 95de2f4aa0670c396f277a6314d32bf8af169cf8922231cfdd73389c2d95dbdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+0a8629bff642c3c3b84bb644c0099194f063b627" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d12a47f71d19e859249600f43514445de1721eba620e7a69385c1a2df3f7d40
[INFO] running `Command { std: "docker" "start" "-a" "8d12a47f71d19e859249600f43514445de1721eba620e7a69385c1a2df3f7d40", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling aster v0.27.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling serde_codegen v0.8.9
[INFO] [stderr]    Compiling serde_codegen_internals v0.8.9
[INFO] [stderr]    Compiling quasi v0.20.1
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_codegen_internals-0.8.9/src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | 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] [stderr] error: could not compile `serde_codegen_internals`
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[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]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quasi-0.20.1/src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | 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] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/aster-0.27.0/src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | 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" "8d12a47f71d19e859249600f43514445de1721eba620e7a69385c1a2df3f7d40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d12a47f71d19e859249600f43514445de1721eba620e7a69385c1a2df3f7d40", kill_on_drop: false }`
[INFO] [stdout] 8d12a47f71d19e859249600f43514445de1721eba620e7a69385c1a2df3f7d40