[INFO] fetching crate strict_result 1.2.0...
[INFO] testing strict_result-1.2.0 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate strict_result 1.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate strict_result 1.2.0
[INFO] finished tweaking crates.io crate strict_result 1.2.0
[INFO] tweaked toml for crates.io crate strict_result 1.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate strict_result 1.2.0 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate strict_result 1.2.0 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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 37f57b725d561bd9ff57fbf8c117336d16a7052f3aed046135f15d70096dd76c
[INFO] running `Command { std: "docker" "start" "-a" "37f57b725d561bd9ff57fbf8c117336d16a7052f3aed046135f15d70096dd76c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37f57b725d561bd9ff57fbf8c117336d16a7052f3aed046135f15d70096dd76c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37f57b725d561bd9ff57fbf8c117336d16a7052f3aed046135f15d70096dd76c", kill_on_drop: false }`
[INFO] [stdout] 37f57b725d561bd9ff57fbf8c117336d16a7052f3aed046135f15d70096dd76c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ba0deb85e44c55510a18ceafe8b0fcff3dd040e16fa97437e5e473554e53411
[INFO] running `Command { std: "docker" "start" "-a" "7ba0deb85e44c55510a18ceafe8b0fcff3dd040e16fa97437e5e473554e53411", kill_on_drop: false }`
[INFO] [stderr]    Compiling strict_result v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `StrictResult<Infallible, B>: Residual<A>` is not satisfied
[INFO] [stdout]    --> src/lib.rs:129:18
[INFO] [stdout]     |
[INFO] [stdout] 129 |     type Residual = StrictResult<Infallible, B>;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |
[INFO] [stdout] help: the nightly-only, unstable trait `Residual<A>` is not implemented for `StrictResult<Infallible, B>`
[INFO] [stdout]    --> src/lib.rs:76:1
[INFO] [stdout]     |
[INFO] [stdout]  76 | pub struct StrictResult<A, B>(Result<A, B>);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: the following other types implement trait `Residual<O>`
[INFO] [stdout]    --> /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/result.rs:2205:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Result<Infallible, E>` implements `Residual<T>`
[INFO] [stdout]    --> /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/option.rs:2810:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Option<Infallible>` implements `Residual<T>`
[INFO] [stdout]    --> /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/library/core/src/ops/control_flow.rs:138:0
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ControlFlow<B, Infallible>` implements `Residual<C>`
[INFO] [stdout] note: required by a bound in `core::ops::Try::Residual`
[INFO] [stdout]    --> /rustc/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/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 `strict_result` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "7ba0deb85e44c55510a18ceafe8b0fcff3dd040e16fa97437e5e473554e53411", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ba0deb85e44c55510a18ceafe8b0fcff3dd040e16fa97437e5e473554e53411", kill_on_drop: false }`
[INFO] [stdout] 7ba0deb85e44c55510a18ceafe8b0fcff3dd040e16fa97437e5e473554e53411
