[INFO] fetching crate stackstring 0.0.2...
[INFO] checking stackstring-0.0.2 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate stackstring 0.0.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate stackstring 0.0.2 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stackstring 0.0.2
[INFO] finished tweaking crates.io crate stackstring 0.0.2
[INFO] tweaked toml for crates.io crate stackstring 0.0.2 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate stackstring 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] d1445f3f532f15c58e5ebcc4d29ba1039056d519b851a3b570197b8b17c71db3
[INFO] running `Command { std: "docker" "start" "-a" "d1445f3f532f15c58e5ebcc4d29ba1039056d519b851a3b570197b8b17c71db3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1445f3f532f15c58e5ebcc4d29ba1039056d519b851a3b570197b8b17c71db3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1445f3f532f15c58e5ebcc4d29ba1039056d519b851a3b570197b8b17c71db3", kill_on_drop: false }`
[INFO] [stdout] d1445f3f532f15c58e5ebcc4d29ba1039056d519b851a3b570197b8b17c71db3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 9421eb01d6ee651233ea6f4cb894cb640d478db41ae980de42e30d92b465a08b
[INFO] running `Command { std: "docker" "start" "-a" "9421eb01d6ee651233ea6f4cb894cb640d478db41ae980de42e30d92b465a08b", kill_on_drop: false }`
[INFO] [stderr]     Checking stackstring v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `rkyv`
[INFO] [stdout]  --> examples/rkyv.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rkyv::{
[INFO] [stdout]   |     ^^^^ use of undeclared crate or module `rkyv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rkyv`
[INFO] [stdout]  --> examples/rkyv.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rkyv::{
[INFO] [stdout]   |     ^^^^ use of undeclared crate or module `rkyv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `Archive`
[INFO] [stdout]   --> examples/rkyv.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[derive(Archive, Deserialize, Serialize, PartialEq, Debug)]
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `Deserialize`
[INFO] [stdout]   --> examples/rkyv.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[derive(Archive, Deserialize, Serialize, PartialEq, Debug)]
[INFO] [stdout]    |                   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the derive macro `Serialize`
[INFO] [stdout]   --> examples/rkyv.rs:11:32
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[derive(Archive, Deserialize, Serialize, PartialEq, Debug)]
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `AlignedSerializer`
[INFO] [stdout]   --> examples/rkyv.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let mut serializer = AlignedSerializer::new(AlignedVec::new());
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^ use of undeclared type `AlignedSerializer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `AllocDeserializer` in this scope
[INFO] [stdout]   --> examples/rkyv.rs:33:28
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut deserializer = AllocDeserializer;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stackstring`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "9421eb01d6ee651233ea6f4cb894cb640d478db41ae980de42e30d92b465a08b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9421eb01d6ee651233ea6f4cb894cb640d478db41ae980de42e30d92b465a08b", kill_on_drop: false }`
[INFO] [stdout] 9421eb01d6ee651233ea6f4cb894cb640d478db41ae980de42e30d92b465a08b