[INFO] fetching crate kct_package 0.2.0...
[INFO] checking kct_package-0.2.0 against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] extracting crate kct_package 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate kct_package 0.2.0 on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kct_package 0.2.0
[INFO] finished tweaking crates.io crate kct_package 0.2.0
[INFO] tweaked toml for crates.io crate kct_package 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8e73e3ed5d636255334df70a19b4b6b42effd3708e206c1f629336271917d1b
[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" "b8e73e3ed5d636255334df70a19b4b6b42effd3708e206c1f629336271917d1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8e73e3ed5d636255334df70a19b4b6b42effd3708e206c1f629336271917d1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8e73e3ed5d636255334df70a19b4b6b42effd3708e206c1f629336271917d1b", kill_on_drop: false }`
[INFO] [stdout] b8e73e3ed5d636255334df70a19b4b6b42effd3708e206c1f629336271917d1b
[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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "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] 3bc6add879f0f3102dcf5540dcb594aa01051608d170e9e496002c45fc99676b
[INFO] running `Command { std: "docker" "start" "-a" "3bc6add879f0f3102dcf5540dcb594aa01051608d170e9e496002c45fc99676b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling peg-runtime v0.6.3
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling unescape v0.1.0
[INFO] [stderr]    Compiling structdump v0.1.2
[INFO] [stderr]    Compiling jrsonnet-stdlib v0.3.2
[INFO] [stderr]     Checking yansi-term v0.1.2
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking closure v0.3.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking annotate-snippets v0.9.0
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]    Compiling peg-macros v0.6.3
[INFO] [stderr]     Checking tar v0.4.33
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]    Compiling peg v0.6.3
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling valico v3.6.0
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking uritemplate-next v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling structdump-derive v0.1.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/structdump-derive-0.1.2/src/lib.rs:22:60
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 let name = Ident::new(&format!("f{}", i), syn::export::Span::call_site());
[INFO] [stdout]    |                                                                        ^^^^ not found in `syn::export`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2::Span;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro::Span;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro::bridge::server::Span;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use quote::__private::Span;
[INFO] [stdout]    |
[INFO] [stdout]      and 1 other candidate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `export` in `syn`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/structdump-derive-0.1.2/src/lib.rs:53:60
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 let name = Ident::new(&format!("f{}", i), syn::export::Span::call_site());
[INFO] [stdout]    |                                                                        ^^^^ not found in `syn::export`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro2::Span;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro::Span;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use proc_macro::bridge::server::Span;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use quote::__private::Span;
[INFO] [stdout]    |
[INFO] [stdout]      and 1 other candidate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ignore v0.4.17
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `structdump-derive`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3bc6add879f0f3102dcf5540dcb594aa01051608d170e9e496002c45fc99676b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bc6add879f0f3102dcf5540dcb594aa01051608d170e9e496002c45fc99676b", kill_on_drop: false }`
[INFO] [stdout] 3bc6add879f0f3102dcf5540dcb594aa01051608d170e9e496002c45fc99676b