[INFO] fetching crate lavender 0.1.0...
[INFO] testing lavender-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate lavender 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate lavender 0.1.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lavender 0.1.0
[INFO] finished tweaking crates.io crate lavender 0.1.0
[INFO] tweaked toml for crates.io crate lavender 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] 664f9e478b7df8f97ade93ffd645256ff8ebf098555187a5714f93875fb26f26
[INFO] running `Command { std: "docker" "start" "-a" "664f9e478b7df8f97ade93ffd645256ff8ebf098555187a5714f93875fb26f26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "664f9e478b7df8f97ade93ffd645256ff8ebf098555187a5714f93875fb26f26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "664f9e478b7df8f97ade93ffd645256ff8ebf098555187a5714f93875fb26f26", kill_on_drop: false }`
[INFO] [stdout] 664f9e478b7df8f97ade93ffd645256ff8ebf098555187a5714f93875fb26f26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--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] f3f6971248f928633ba17a863423fd6f7df12d075c7a2b6a59fd1525fd44e626
[INFO] running `Command { std: "docker" "start" "-a" "f3f6971248f928633ba17a863423fd6f7df12d075c7a2b6a59fd1525fd44e626", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling lavender v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling encode_unicode v0.1.3
[INFO] [stderr]    Compiling gc v0.3.6
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling gc_derive v0.3.6
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling rustyline v1.0.0
[INFO] [stdout] error[E0432]: unresolved import `pest::inputs`
[INFO] [stdout]  --> src/parse/mod.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use pest::inputs::{Input, StrInput};
[INFO] [stdout]   |           ^^^^^^ could not find `inputs` in `pest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/env.rs:7:25
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub stdin: Rc<Mutex<Read>>,
[INFO] [stdout]   |                         ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/env.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub stdout: Rc<Mutex<Write>>,
[INFO] [stdout]   |                          ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/env.rs:9:26
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub stderr: Rc<Mutex<Write>>,
[INFO] [stdout]   |                          ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/value/mod.rs:21:54
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn writer(&self, b: &BindingRef) -> Rc<Mutex<Write>> {
[INFO] [stdout]    |                                                      ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/value/mod.rs:54:54
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn reader(&self, b: &BindingRef) -> Rc<Mutex<Read>> {
[INFO] [stdout]    |                                                      ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lavender` due to 2 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f3f6971248f928633ba17a863423fd6f7df12d075c7a2b6a59fd1525fd44e626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3f6971248f928633ba17a863423fd6f7df12d075c7a2b6a59fd1525fd44e626", kill_on_drop: false }`
[INFO] [stdout] f3f6971248f928633ba17a863423fd6f7df12d075c7a2b6a59fd1525fd44e626