[INFO] fetching crate rust-releases-rust-changelog 0.27.0...
[INFO] checking rust-releases-rust-changelog-0.27.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate rust-releases-rust-changelog 0.27.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate rust-releases-rust-changelog 0.27.0 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 rust-releases-rust-changelog 0.27.0
[INFO] finished tweaking crates.io crate rust-releases-rust-changelog 0.27.0
[INFO] tweaked toml for crates.io crate rust-releases-rust-changelog 0.27.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--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]      Locking 68 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding rust-releases-core v0.27.0 (latest: v0.28.0)
[INFO] [stderr]       Adding rust-releases-io v0.27.1 (latest: v0.28.0)
[INFO] [stderr]       Adding rustls v0.22.3 (latest: v0.23.4)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding yare v1.0.2 (latest: v3.0.0)
[INFO] [stderr]       Adding yare-macro v1.0.1 (latest: v3.0.0)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yare v1.0.2
[INFO] [stderr]   Downloaded rust-releases-core v0.27.0
[INFO] [stderr]   Downloaded rust-releases-io v0.27.1
[INFO] [stderr]   Downloaded yare-macro v1.0.1
[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] fc33ffd2bd1e6019d86906bb3137aa9412d11beec3ce0365a032a842488a6a93
[INFO] running `Command { std: "docker" "start" "-a" "fc33ffd2bd1e6019d86906bb3137aa9412d11beec3ce0365a032a842488a6a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc33ffd2bd1e6019d86906bb3137aa9412d11beec3ce0365a032a842488a6a93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc33ffd2bd1e6019d86906bb3137aa9412d11beec3ce0365a032a842488a6a93", kill_on_drop: false }`
[INFO] [stdout] fc33ffd2bd1e6019d86906bb3137aa9412d11beec3ce0365a032a842488a6a93
[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] a5e422dd1b1a31683ac50e25da3ddebcc7271b975d4c15a9c5fa53407b7fa3b8
[INFO] running `Command { std: "docker" "start" "-a" "a5e422dd1b1a31683ac50e25da3ddebcc7271b975d4c15a9c5fa53407b7fa3b8", kill_on_drop: false }`
[INFO] [stderr]     Checking rustls-pki-types v1.4.1
[INFO] [stderr]    Compiling rustls v0.22.3
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling time-macros v0.2.17
[INFO] [stderr]    Compiling yare-macro v1.0.1
[INFO] [stderr]     Checking directories-next v2.0.0
[INFO] [stderr]     Checking rust-releases-core v0.27.0
[INFO] [stderr]     Checking rustls-webpki v0.102.2
[INFO] [stderr]     Checking webpki-roots v0.26.1
[INFO] [stderr]     Checking yare v1.0.2
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking ureq v2.9.6
[INFO] [stderr]     Checking rust-releases-io v0.27.1
[INFO] [stderr]     Checking rust-releases-rust-changelog v0.27.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.88s
[INFO] running `Command { std: "docker" "inspect" "a5e422dd1b1a31683ac50e25da3ddebcc7271b975d4c15a9c5fa53407b7fa3b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5e422dd1b1a31683ac50e25da3ddebcc7271b975d4c15a9c5fa53407b7fa3b8", kill_on_drop: false }`
[INFO] [stdout] a5e422dd1b1a31683ac50e25da3ddebcc7271b975d4c15a9c5fa53407b7fa3b8
[INFO] checking rust-releases-rust-changelog-0.27.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate rust-releases-rust-changelog 0.27.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate rust-releases-rust-changelog 0.27.0 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 rust-releases-rust-changelog 0.27.0
[INFO] finished tweaking crates.io crate rust-releases-rust-changelog 0.27.0
[INFO] tweaked toml for crates.io crate rust-releases-rust-changelog 0.27.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 68 packages
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
[INFO] [stderr]       Adding rust-releases-core v0.27.0 (latest: v0.28.0)
[INFO] [stderr]       Adding rust-releases-io v0.27.1 (latest: v0.28.0)
[INFO] [stderr]       Adding rustls v0.22.3 (latest: v0.23.4)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding yare v1.0.2 (latest: v3.0.0)
[INFO] [stderr]       Adding yare-macro v1.0.1 (latest: v3.0.0)
[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] d330546c09019f67bf17638b3a66969933f827217684e0babaf47ef6f672580c
[INFO] running `Command { std: "docker" "start" "-a" "d330546c09019f67bf17638b3a66969933f827217684e0babaf47ef6f672580c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d330546c09019f67bf17638b3a66969933f827217684e0babaf47ef6f672580c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d330546c09019f67bf17638b3a66969933f827217684e0babaf47ef6f672580c", kill_on_drop: false }`
[INFO] [stdout] d330546c09019f67bf17638b3a66969933f827217684e0babaf47ef6f672580c
[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] f01d73ac8df632029871913c03a01ba6011d5172d06ca9b5735752fe59bfe9fc
[INFO] running `Command { std: "docker" "start" "-a" "f01d73ac8df632029871913c03a01ba6011d5172d06ca9b5735752fe59bfe9fc", kill_on_drop: false }`
[INFO] [stderr]     Checking rustls-pki-types v1.4.1
[INFO] [stderr]    Compiling rustls v0.22.3
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling time-macros v0.2.17
[INFO] [stderr]    Compiling yare-macro v1.0.1
[INFO] [stderr]     Checking directories-next v2.0.0
[INFO] [stderr]     Checking rust-releases-core v0.27.0
[INFO] [stderr]     Checking rustls-webpki v0.102.2
[INFO] [stderr]     Checking webpki-roots v0.26.1
[INFO] [stderr]     Checking yare v1.0.2
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]     Checking ureq v2.9.6
[INFO] [stderr]     Checking rust-releases-io v0.27.1
[INFO] [stderr]     Checking rust-releases-rust-changelog v0.27.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.53s
[INFO] running `Command { std: "docker" "inspect" "f01d73ac8df632029871913c03a01ba6011d5172d06ca9b5735752fe59bfe9fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f01d73ac8df632029871913c03a01ba6011d5172d06ca9b5735752fe59bfe9fc", kill_on_drop: false }`
[INFO] [stdout] f01d73ac8df632029871913c03a01ba6011d5172d06ca9b5735752fe59bfe9fc