[INFO] fetching crate hashing-serializer 0.2.0-pre.0...
[INFO] testing hashing-serializer-0.2.0-pre.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate hashing-serializer 0.2.0-pre.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate hashing-serializer 0.2.0-pre.0
[INFO] finished tweaking crates.io crate hashing-serializer 0.2.0-pre.0
[INFO] tweaked toml for crates.io crate hashing-serializer 0.2.0-pre.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hashing-serializer 0.2.0-pre.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] [stderr]       Adding rand_core v0.6.4 (available: v0.9.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7a348596c85f87ce60da94d7c3d5a81b070c3e09a68ebc0b8df930cc5317ad0
[INFO] running `Command { std: "docker" "start" "-a" "b7a348596c85f87ce60da94d7c3d5a81b070c3e09a68ebc0b8df930cc5317ad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7a348596c85f87ce60da94d7c3d5a81b070c3e09a68ebc0b8df930cc5317ad0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7a348596c85f87ce60da94d7c3d5a81b070c3e09a68ebc0b8df930cc5317ad0", kill_on_drop: false }`
[INFO] [stdout] b7a348596c85f87ce60da94d7c3d5a81b070c3e09a68ebc0b8df930cc5317ad0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a14dfe48f9e874b79101af4e03363a88b0de79d65bdf82242894c165454059e1
[INFO] running `Command { std: "docker" "start" "-a" "a14dfe48f9e874b79101af4e03363a88b0de79d65bdf82242894c165454059e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.19.0
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling hybrid-array v0.4.5
[INFO] [stderr]    Compiling crypto-common v0.2.0-rc.5
[INFO] [stderr]    Compiling digest v0.11.0-rc.4
[INFO] [stderr]    Compiling hashing-serializer v0.2.0-pre.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.09s
[INFO] running `Command { std: "docker" "inspect" "a14dfe48f9e874b79101af4e03363a88b0de79d65bdf82242894c165454059e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a14dfe48f9e874b79101af4e03363a88b0de79d65bdf82242894c165454059e1", kill_on_drop: false }`
[INFO] [stdout] a14dfe48f9e874b79101af4e03363a88b0de79d65bdf82242894c165454059e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6022cf58fd7fdceaedfe0412106cc60b518cc43f52cd1e0777ae4147b1f7ac61
[INFO] running `Command { std: "docker" "start" "-a" "6022cf58fd7fdceaedfe0412106cc60b518cc43f52cd1e0777ae4147b1f7ac61", kill_on_drop: false }`
[INFO] [stderr]    Compiling const-oid v0.10.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling block-buffer v0.11.0
[INFO] [stderr]    Compiling digest v0.11.0-rc.4
[INFO] [stderr]    Compiling sha2 v0.11.0-rc.3
[INFO] [stderr]    Compiling hashing-serializer v0.2.0-pre.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `k256`
[INFO] [stdout]    --> src/lib.rs:404:9
[INFO] [stdout]     |
[INFO] [stdout] 404 |     use k256::ecdsa::SigningKey;
[INFO] [stdout]     |         ^^^^ use of unresolved module or unlinked crate `k256`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `k256`, use `cargo add k256` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand_core::OsRng`
[INFO] [stdout]    --> src/lib.rs:405:9
[INFO] [stdout]     |
[INFO] [stdout] 405 |     use rand_core::OsRng;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^ no `OsRng` in the root
[INFO] [stdout]     |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand_core-0.6.4/src/lib.rs:49:43
[INFO] [stdout]     |
[INFO] [stdout]  49 | #[cfg(feature = "getrandom")] pub use os::OsRng;
[INFO] [stdout]     |       ---------------------               ^^^^^
[INFO] [stdout]     |       |
[INFO] [stdout]     |       the item is gated behind the `getrandom` feature
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hashing-serializer` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6022cf58fd7fdceaedfe0412106cc60b518cc43f52cd1e0777ae4147b1f7ac61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6022cf58fd7fdceaedfe0412106cc60b518cc43f52cd1e0777ae4147b1f7ac61", kill_on_drop: false }`
[INFO] [stdout] 6022cf58fd7fdceaedfe0412106cc60b518cc43f52cd1e0777ae4147b1f7ac61