[INFO] fetching crate stackstring 0.0.2...
[INFO] checking stackstring-0.0.2 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate stackstring 0.0.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate stackstring 0.0.2 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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-0/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ptr_meta v0.1.2
[INFO] [stderr]   Downloaded ptr_meta_derive v0.1.2
[INFO] [stderr]   Downloaded rkyv_derive v0.5.1
[INFO] [stderr]   Downloaded rkyv v0.5.1
[INFO] [stderr]   Downloaded seahash v4.1.0
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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] 98cfadf3d7bedcf3866e7bd40d7477edee0e2deebf6bbeae54fe0f11008bf41a
[INFO] running `Command { std: "docker" "start" "-a" "98cfadf3d7bedcf3866e7bd40d7477edee0e2deebf6bbeae54fe0f11008bf41a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98cfadf3d7bedcf3866e7bd40d7477edee0e2deebf6bbeae54fe0f11008bf41a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98cfadf3d7bedcf3866e7bd40d7477edee0e2deebf6bbeae54fe0f11008bf41a", kill_on_drop: false }`
[INFO] [stdout] 98cfadf3d7bedcf3866e7bd40d7477edee0e2deebf6bbeae54fe0f11008bf41a
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 957fd33f36a3743a347405022d6a51e41ba6dff65f900418167838768c74677d
[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" "957fd33f36a3743a347405022d6a51e41ba6dff65f900418167838768c74677d", 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" "957fd33f36a3743a347405022d6a51e41ba6dff65f900418167838768c74677d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "957fd33f36a3743a347405022d6a51e41ba6dff65f900418167838768c74677d", kill_on_drop: false }`
[INFO] [stdout] 957fd33f36a3743a347405022d6a51e41ba6dff65f900418167838768c74677d