[INFO] fetching crate utrace_core 0.1.1...
[INFO] testing utrace_core-0.1.1 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate utrace_core 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate utrace_core 0.1.1
[INFO] finished tweaking crates.io crate utrace_core 0.1.1
[INFO] tweaked toml for crates.io crate utrace_core 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate utrace_core 0.1.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 54 packages to highest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8
[INFO] running `Command { std: "docker" "start" "b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling utrace_core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `kani`
[INFO] [stdout]    --> src/encoding.rs:214:7
[INFO] [stdout]     |
[INFO] [stdout] 214 | #[cfg(kani)]
[INFO] [stdout]     |       ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 34 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(kani)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(kani)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling wait-timeout v0.2.1
[INFO] [stderr]    Compiling bit-vec v0.10.1
[INFO] [stdout] warning: unexpected `cfg` condition name: `kani`
[INFO] [stdout]    --> src/encoding.rs:214:7
[INFO] [stdout]     |
[INFO] [stdout] 214 | #[cfg(kani)]
[INFO] [stdout]     |       ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 34 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(kani)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(kani)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling rand v0.10.3
[INFO] [stderr]    Compiling bit-set v0.11.1
[INFO] [stderr]    Compiling rusty-fork v0.3.1
[INFO] [stderr]    Compiling proptest v1.12.0
[INFO] [stderr]    Compiling utrace_core v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: cannot find module or crate `std` in this scope
[INFO] [stdout]   --> src/encoding.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     use std::collections::VecDeque;
[INFO] [stdout]    |         ^^^ use of unresolved module or unlinked crate `std`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `std`, use `cargo add std` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find module or crate `std` in this scope
[INFO] [stdout]   --> src/encoding.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |     use std::iter::zip;
[INFO] [stdout]    |         ^^^ use of unresolved module or unlinked crate `std`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `std`, use `cargo add std` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/encoding.rs:188:29
[INFO] [stdout]     |
[INFO] [stdout] 188 |         let mut serialized: Vec<u8> = Vec::new();
[INFO] [stdout]     |                             ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/encoding.rs:194:31
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut deserialized: Vec<TracePoint> = Vec::new();
[INFO] [stdout]     |                               ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `kani`
[INFO] [stdout]    --> src/encoding.rs:214:7
[INFO] [stdout]     |
[INFO] [stdout] 214 | #[cfg(kani)]
[INFO] [stdout]     |       ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 34 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(kani)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(kani)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Vec` in this scope
[INFO] [stdout]   --> src/encoding.rs:96:30
[INFO] [stdout]    |
[INFO] [stdout] 96 |             let mut stream = Vec::new();
[INFO] [stdout]    |                              ^^^ use of undeclared type `Vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Decoder` in this scope
[INFO] [stdout]   --> src/encoding.rs:99:27
[INFO] [stdout]    |
[INFO] [stdout] 99 |             let mut dec = Decoder::new();
[INFO] [stdout]    |                           ^^^^^^^ use of undeclared type `Decoder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/encoding.rs:113:30
[INFO] [stdout]     |
[INFO] [stdout] 113 |             let mut stream = Vec::new();
[INFO] [stdout]     |                              ^^^ use of undeclared type `Vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Decoder` in this scope
[INFO] [stdout]    --> src/encoding.rs:118:27
[INFO] [stdout]     |
[INFO] [stdout] 118 |             let mut dec = Decoder::new();
[INFO] [stdout]     |                           ^^^^^^^ use of undeclared type `Decoder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/encoding.rs:120:31
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let mut decoded = Vec::new();
[INFO] [stdout]     |                               ^^^ use of undeclared type `Vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Decoder` in this scope
[INFO] [stdout]    --> src/encoding.rs:143:27
[INFO] [stdout]     |
[INFO] [stdout] 143 |             let mut dec = Decoder::new();
[INFO] [stdout]     |                           ^^^^^^^ use of undeclared type `Decoder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/encoding.rs:188:39
[INFO] [stdout]     |
[INFO] [stdout] 188 |         let mut serialized: Vec<u8> = Vec::new();
[INFO] [stdout]     |                                       ^^^ use of undeclared type `Vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Vec` in this scope
[INFO] [stdout]    --> src/encoding.rs:194:49
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut deserialized: Vec<TracePoint> = Vec::new();
[INFO] [stdout]     |                                                 ^^^ use of undeclared type `Vec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: cannot find type `Decoder` in this scope
[INFO] [stdout]    --> src/encoding.rs:196:23
[INFO] [stdout]     |
[INFO] [stdout] 196 |         let mut dec = Decoder::new();
[INFO] [stdout]     |                       ^^^^^^^ use of undeclared type `Decoder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `utrace_core` (lib test) due to 13 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8", kill_on_drop: false }`
[INFO] [stdout] b257065e0af5ca6495fc690a8cef709c48fe23c95191bbe5b605c9d5db5ad9c8
