[INFO] fetching crate usher 0.2.1...
[INFO] checking usher-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate usher 0.2.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate usher 0.2.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate usher 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate usher 0.2.1
[INFO] tweaked toml for crates.io crate usher 0.2.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate usher 0.2.1 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cb226f549e4c83935432a97cc4e44feb91f545019adad1224e964ec4d7ca6d2
[INFO] running `Command { std: "docker" "start" "-a" "8cb226f549e4c83935432a97cc4e44feb91f545019adad1224e964ec4d7ca6d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cb226f549e4c83935432a97cc4e44feb91f545019adad1224e964ec4d7ca6d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb226f549e4c83935432a97cc4e44feb91f545019adad1224e964ec4d7ca6d2", kill_on_drop: false }`
[INFO] [stdout] 8cb226f549e4c83935432a97cc4e44feb91f545019adad1224e964ec4d7ca6d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77d3e4c4427fd4831ed401629fd2ad3651a546087773ee85cfcc2009d30f6e84
[INFO] running `Command { std: "docker" "start" "-a" "77d3e4c4427fd4831ed401629fd2ad3651a546087773ee85cfcc2009d30f6e84", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking smallvec v1.8.1
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking usher v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `extensions::*`
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub use extensions::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking hyper v0.14.19
[INFO] [stdout] warning: unused import: `extensions::*`
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub use extensions::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.83s
[INFO] running `Command { std: "docker" "inspect" "77d3e4c4427fd4831ed401629fd2ad3651a546087773ee85cfcc2009d30f6e84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77d3e4c4427fd4831ed401629fd2ad3651a546087773ee85cfcc2009d30f6e84", kill_on_drop: false }`
[INFO] [stdout] 77d3e4c4427fd4831ed401629fd2ad3651a546087773ee85cfcc2009d30f6e84
[INFO] checking usher-0.2.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate usher 0.2.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate usher 0.2.1 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate usher 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate usher 0.2.1
[INFO] tweaked toml for crates.io crate usher 0.2.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate usher 0.2.1 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af778b23b9330761098d2cd2b81a939c2c2bc8d6b6d0c3da06809806c688e2de
[INFO] running `Command { std: "docker" "start" "-a" "af778b23b9330761098d2cd2b81a939c2c2bc8d6b6d0c3da06809806c688e2de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af778b23b9330761098d2cd2b81a939c2c2bc8d6b6d0c3da06809806c688e2de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af778b23b9330761098d2cd2b81a939c2c2bc8d6b6d0c3da06809806c688e2de", kill_on_drop: false }`
[INFO] [stdout] af778b23b9330761098d2cd2b81a939c2c2bc8d6b6d0c3da06809806c688e2de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01680f5e21638367292478aee182c941b1471fce21def43e74d46456f82e0f60
[INFO] running `Command { std: "docker" "start" "-a" "01680f5e21638367292478aee182c941b1471fce21def43e74d46456f82e0f60", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking smallvec v1.8.1
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking usher v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `extensions::*`
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub use extensions::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking hyper v0.14.19
[INFO] [stdout] warning: unused import: `extensions::*`
[INFO] [stdout]   --> src/lib.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub use extensions::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.24s
[INFO] running `Command { std: "docker" "inspect" "01680f5e21638367292478aee182c941b1471fce21def43e74d46456f82e0f60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01680f5e21638367292478aee182c941b1471fce21def43e74d46456f82e0f60", kill_on_drop: false }`
[INFO] [stdout] 01680f5e21638367292478aee182c941b1471fce21def43e74d46456f82e0f60