[INFO] fetching crate dgc 0.0.7...
[INFO] checking dgc-0.0.7 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate dgc 0.0.7 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate dgc 0.0.7 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 dgc 0.0.7
[INFO] finished tweaking crates.io crate dgc 0.0.7
[INFO] tweaked toml for crates.io crate dgc 0.0.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate dgc 0.0.7 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusticata-macros v4.0.0
[INFO] [stderr]   Downloaded oid-registry v0.2.0
[INFO] [stderr]   Downloaded der-oid-macro v0.5.0
[INFO] [stderr]   Downloaded ciborium-io v0.2.0
[INFO] [stderr]   Downloaded x509-parser v0.12.0
[INFO] [stderr]   Downloaded ciborium-ll v0.2.0
[INFO] [stderr]   Downloaded ed25519 v1.3.0
[INFO] [stderr]   Downloaded half v1.8.2
[INFO] [stderr]   Downloaded ciborium v0.2.0
[INFO] [stderr]   Downloaded p256 v0.9.0
[INFO] [stderr]   Downloaded ring-compat v0.3.2
[INFO] [stderr]   Downloaded libc v0.2.109
[INFO] [stderr]   Downloaded serde v1.0.131
[INFO] [stderr]   Downloaded rstest v0.11.0
[INFO] [stderr]   Downloaded nom v7.1.0
[INFO] [stderr]   Downloaded serde_derive v1.0.131
[INFO] [stderr]   Downloaded proc-macro2 v1.0.33
[INFO] [stderr]   Downloaded typenum v1.14.0
[INFO] [stderr]   Downloaded generic-array v0.14.4
[INFO] [stderr]   Downloaded data-encoding v2.3.2
[INFO] [stderr]   Downloaded der-parser v6.0.0
[INFO] [stderr]   Downloaded base45 v3.0.0
[INFO] [stderr]   Downloaded p384 v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5f76bff2c0684d94ca9a1f01117b33062889e37b8eaad5bd1596d550873f8009
[INFO] running `Command { std: "docker" "start" "-a" "5f76bff2c0684d94ca9a1f01117b33062889e37b8eaad5bd1596d550873f8009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f76bff2c0684d94ca9a1f01117b33062889e37b8eaad5bd1596d550873f8009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f76bff2c0684d94ca9a1f01117b33062889e37b8eaad5bd1596d550873f8009", kill_on_drop: false }`
[INFO] [stdout] 5f76bff2c0684d94ca9a1f01117b33062889e37b8eaad5bd1596d550873f8009
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fb2b6c0cac62a4919ece1fdf941f3dece967c6079ee1e10073090c9e9b749450
[INFO] running `Command { std: "docker" "start" "-a" "fb2b6c0cac62a4919ece1fdf941f3dece967c6079ee1e10073090c9e9b749450", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking signature v1.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking der v0.4.5
[INFO] [stderr]    Compiling oid-registry v0.2.0
[INFO] [stderr]     Checking crypto-bigint v0.2.11
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling ryu v1.0.6
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]     Checking ciborium-ll v0.2.0
[INFO] [stderr]     Checking elliptic-curve v0.10.6
[INFO] [stderr]     Checking ecdsa v0.12.4
[INFO] [stderr]    Compiling rstest v0.11.0
[INFO] [stderr]     Checking aead v0.4.3
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking p384 v0.8.0
[INFO] [stderr]     Checking p256 v0.9.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking ed25519 v1.3.0
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking zeroize v1.4.3
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking base45 v3.0.0
[INFO] [stderr]     Checking rusticata-macros v4.0.0
[INFO] [stderr]     Checking ring-compat v0.3.2
[INFO] [stderr]    Compiling der-oid-macro v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking der-parser v6.0.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking x509-parser v0.12.0
[INFO] [stderr]     Checking ciborium v0.2.0
[INFO] [stderr]     Checking dgc v0.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]    --> src/cwt.rs:314:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |     use std::convert::TryInto;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 317 |     use super::*;
[INFO] [stdout]     |         -------- the item `TryInto` is already imported here
[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 48.61s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rstest v0.11.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "fb2b6c0cac62a4919ece1fdf941f3dece967c6079ee1e10073090c9e9b749450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb2b6c0cac62a4919ece1fdf941f3dece967c6079ee1e10073090c9e9b749450", kill_on_drop: false }`
[INFO] [stdout] fb2b6c0cac62a4919ece1fdf941f3dece967c6079ee1e10073090c9e9b749450
[INFO] checking dgc-0.0.7 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate dgc 0.0.7 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate dgc 0.0.7 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 dgc 0.0.7
[INFO] finished tweaking crates.io crate dgc 0.0.7
[INFO] tweaked toml for crates.io crate dgc 0.0.7 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate dgc 0.0.7 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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d56b1691f5c86a39b2dfc66e7040566b40712085454faa7321c6f0818db2973e
[INFO] running `Command { std: "docker" "start" "-a" "d56b1691f5c86a39b2dfc66e7040566b40712085454faa7321c6f0818db2973e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d56b1691f5c86a39b2dfc66e7040566b40712085454faa7321c6f0818db2973e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d56b1691f5c86a39b2dfc66e7040566b40712085454faa7321c6f0818db2973e", kill_on_drop: false }`
[INFO] [stdout] d56b1691f5c86a39b2dfc66e7040566b40712085454faa7321c6f0818db2973e
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc5aebe5d11e926ae210c9a8255d2ee30c2ae4f4209e61be1abdf0468e4de268
[INFO] running `Command { std: "docker" "start" "-a" "cc5aebe5d11e926ae210c9a8255d2ee30c2ae4f4209e61be1abdf0468e4de268", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking signature v1.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking der v0.4.5
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking crypto-bigint v0.2.11
[INFO] [stderr]    Compiling ryu v1.0.6
[INFO] [stderr]    Compiling oid-registry v0.2.0
[INFO] [stderr]     Checking elliptic-curve v0.10.6
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking ecdsa v0.12.4
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]    Compiling rstest v0.11.0
[INFO] [stderr]     Checking rusticata-macros v4.0.0
[INFO] [stderr]     Checking p384 v0.8.0
[INFO] [stderr]     Checking p256 v0.9.0
[INFO] [stderr]     Checking ciborium-ll v0.2.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking aead v0.4.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking ed25519 v1.3.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking zeroize v1.4.3
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking base45 v3.0.0
[INFO] [stderr]     Checking ring-compat v0.3.2
[INFO] [stderr]    Compiling der-oid-macro v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking der-parser v6.0.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking x509-parser v0.12.0
[INFO] [stderr]     Checking ciborium v0.2.0
[INFO] [stderr]     Checking dgc v0.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]    --> src/cwt.rs:314:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |     use std::convert::TryInto;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 317 |     use super::*;
[INFO] [stdout]     |         -------- the item `TryInto` is already imported here
[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 48.43s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rstest v0.11.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "cc5aebe5d11e926ae210c9a8255d2ee30c2ae4f4209e61be1abdf0468e4de268", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc5aebe5d11e926ae210c9a8255d2ee30c2ae4f4209e61be1abdf0468e4de268", kill_on_drop: false }`
[INFO] [stdout] cc5aebe5d11e926ae210c9a8255d2ee30c2ae4f4209e61be1abdf0468e4de268