[INFO] fetching crate serde_cursor 0.4.0...
[INFO] testing serde_cursor-0.4.0 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate serde_cursor 0.4.0 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate serde_cursor 0.4.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate serde_cursor 0.4.0
[INFO] tweaked toml for crates.io crate serde_cursor 0.4.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_cursor 0.4.0 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate serde_cursor 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 778ddbc524f8c16481003e25d5d7d7399b352b0156b16b05c7afbc92c7ef7653
[INFO] running `Command { std: "docker" "start" "-a" "778ddbc524f8c16481003e25d5d7d7399b352b0156b16b05c7afbc92c7ef7653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "778ddbc524f8c16481003e25d5d7d7399b352b0156b16b05c7afbc92c7ef7653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "778ddbc524f8c16481003e25d5d7d7399b352b0156b16b05c7afbc92c7ef7653", kill_on_drop: false }`
[INFO] [stdout] 778ddbc524f8c16481003e25d5d7d7399b352b0156b16b05c7afbc92c7ef7653
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a184d4ea34b6fe27f617e2045dd749bede3b16778820c90b9b39b4a9a1526c6
[INFO] running `Command { std: "docker" "start" "-a" "9a184d4ea34b6fe27f617e2045dd749bede3b16778820c90b9b39b4a9a1526c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde_cursor_impl v0.4.0
[INFO] [stderr]    Compiling serde_cursor v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.47s
[INFO] running `Command { std: "docker" "inspect" "9a184d4ea34b6fe27f617e2045dd749bede3b16778820c90b9b39b4a9a1526c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a184d4ea34b6fe27f617e2045dd749bede3b16778820c90b9b39b4a9a1526c6", kill_on_drop: false }`
[INFO] [stdout] 9a184d4ea34b6fe27f617e2045dd749bede3b16778820c90b9b39b4a9a1526c6
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec91cde73f13194b6606abfdda6b48afddbf37e99f304bec7628c91d9d3bbb33
[INFO] running `Command { std: "docker" "start" "-a" "ec91cde73f13194b6606abfdda6b48afddbf37e99f304bec7628c91d9d3bbb33", kill_on_drop: false }`
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling evil v0.2.2
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling toml_datetime v1.1.0+spec-1.1.0
[INFO] [stderr]    Compiling serde_cursor v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `Result<Infallible>: Residual<T>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/evil-0.2.2/src/lib.rs:441:21
[INFO] [stdout]     |
[INFO] [stdout] 441 |     type Residual = Result<Infallible>;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the nightly-only, unstable trait `Residual<T>` is not implemented for `Result<Infallible>`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/evil-0.2.2/src/lib.rs:403:1
[INFO] [stdout]     |
[INFO] [stdout] 403 | pub enum Result<T = ()> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: the following other types implement trait `Residual<O>`
[INFO] [stdout]    --> /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/result.rs:2205:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `std::result::Result<Infallible, E>`
[INFO] [stdout]    --> /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/option.rs:2810:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Option<Infallible>`
[INFO] [stdout] note: required by a bound in `std::ops::Try::Residual`
[INFO] [stdout]    --> /rustc/33835004928d3bf65db4d4712e1330766263b0bd/library/core/src/ops/try_trait.rs:160:4
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `evil` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ec91cde73f13194b6606abfdda6b48afddbf37e99f304bec7628c91d9d3bbb33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec91cde73f13194b6606abfdda6b48afddbf37e99f304bec7628c91d9d3bbb33", kill_on_drop: false }`
[INFO] [stdout] ec91cde73f13194b6606abfdda6b48afddbf37e99f304bec7628c91d9d3bbb33
