[INFO] fetching crate json_schema_test_suite 0.3.0...
[INFO] checking json_schema_test_suite-0.3.0 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate json_schema_test_suite 0.3.0 into /workspace/builds/worker-102/source
[INFO] validating manifest of crates.io crate json_schema_test_suite 0.3.0 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json_schema_test_suite 0.3.0
[INFO] finished tweaking crates.io crate json_schema_test_suite 0.3.0
[INFO] tweaked toml for crates.io crate json_schema_test_suite 0.3.0 written to /workspace/builds/worker-102/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f395e6bf2fc2abd4cfe6def652820245a3ac411e1257fe2d9d07eb728e4fda31
[INFO] running `Command { std: "docker" "start" "-a" "f395e6bf2fc2abd4cfe6def652820245a3ac411e1257fe2d9d07eb728e4fda31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f395e6bf2fc2abd4cfe6def652820245a3ac411e1257fe2d9d07eb728e4fda31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f395e6bf2fc2abd4cfe6def652820245a3ac411e1257fe2d9d07eb728e4fda31", kill_on_drop: false }`
[INFO] [stdout] f395e6bf2fc2abd4cfe6def652820245a3ac411e1257fe2d9d07eb728e4fda31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83d1eb5399fd4fd08e771bdb8ca28d1e4c7fde526643ac9c687eebb64719247c
[INFO] running `Command { std: "docker" "start" "-a" "83d1eb5399fd4fd08e771bdb8ca28d1e4c7fde526643ac9c687eebb64719247c", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   itoa v0.4.8: default, std
[INFO] [stderr]   itoa v0.4.8 (as host dependency): default, std
[INFO] [stderr]   syn v1.0.75 (as host dependency): full, visit
[INFO] [stderr] 
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking futures-io v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking tinyvec v1.3.1
[INFO] [stderr]     Checking tracing-core v0.1.19
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling tokio v1.10.0
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]     Checking http v0.2.4
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking http-body v0.4.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking h2 v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]     Checking hyper v0.14.11
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking json_schema_test_suite_test_case v0.3.0
[INFO] [stderr]     Checking assert-json-diff v2.0.1
[INFO] [stderr]     Checking reqwest v0.11.4
[INFO] [stderr]     Checking mockito v0.30.0
[INFO] [stderr]    Compiling json_schema_test_suite_proc_macro v0.3.0
[INFO] [stderr]     Checking json_schema_test_suite v0.3.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/no-op.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/introduce-failure.rs from 2018 edition to 2021
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.84s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling tokio v1.10.0
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking h2 v0.3.4
[INFO] [stderr]     Checking hyper v0.14.11
[INFO] [stderr]     Checking serde v1.0.128
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking assert-json-diff v2.0.1
[INFO] [stderr]     Checking json_schema_test_suite_test_case v0.3.0
[INFO] [stderr]     Checking reqwest v0.11.4
[INFO] [stderr]     Checking mockito v0.30.0
[INFO] [stderr]    Compiling json_schema_test_suite_proc_macro v0.3.0
[INFO] [stdout] error[E0432]: unresolved import `syn::ItemFn`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/json_schema_test_suite_proc_macro-0.3.0/src/lib.rs:41:37
[INFO] [stdout]    |
[INFO] [stdout] 41 | use syn::{parse_macro_input, Ident, ItemFn};
[INFO] [stdout]    |                                     ^^^^^^ no `ItemFn` in the root
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json_schema_test_suite_proc_macro` due to 2 previous errors
[INFO] [stderr] error: failed to check after updating to 2021
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo check --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "83d1eb5399fd4fd08e771bdb8ca28d1e4c7fde526643ac9c687eebb64719247c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83d1eb5399fd4fd08e771bdb8ca28d1e4c7fde526643ac9c687eebb64719247c", kill_on_drop: false }`
[INFO] [stdout] 83d1eb5399fd4fd08e771bdb8ca28d1e4c7fde526643ac9c687eebb64719247c