[INFO] fetching crate lotus-lib 2.2.2...
[INFO] checking lotus-lib-2.2.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate lotus-lib 2.2.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate lotus-lib 2.2.2 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 lotus-lib 2.2.2
[INFO] finished tweaking crates.io crate lotus-lib 2.2.2
[INFO] tweaked toml for crates.io crate lotus-lib 2.2.2 written to /workspace/builds/worker-0-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 32 packages
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding lz4_flex v0.9.5 (latest: v0.11.3)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded lz4_flex v0.9.5
[INFO] [stderr]   Downloaded oozle v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2b7cde7b1cfa0b0212e6db95627a5e1911b35554fbc75b9b465da01e1467d4cb
[INFO] running `Command { std: "docker" "start" "-a" "2b7cde7b1cfa0b0212e6db95627a5e1911b35554fbc75b9b465da01e1467d4cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b7cde7b1cfa0b0212e6db95627a5e1911b35554fbc75b9b465da01e1467d4cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b7cde7b1cfa0b0212e6db95627a5e1911b35554fbc75b9b465da01e1467d4cb", kill_on_drop: false }`
[INFO] [stdout] 2b7cde7b1cfa0b0212e6db95627a5e1911b35554fbc75b9b465da01e1467d4cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 72cf3ea1fb3e52256169496edf76ee19bb69da92cdc136409641e7a1352c4c1d
[INFO] running `Command { std: "docker" "start" "-a" "72cf3ea1fb3e52256169496edf76ee19bb69da92cdc136409641e7a1352c4c1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling scratch v1.0.7
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.120
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling link-cplusplus v1.0.9
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]    Compiling cxx v1.0.120
[INFO] [stderr]     Checking lz4_flex v0.9.5
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling cxx-build v1.0.120
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.120
[INFO] [stderr]    Compiling oozle v0.1.5
[INFO] [stderr]     Checking lotus-lib v2.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.80s
[INFO] running `Command { std: "docker" "inspect" "72cf3ea1fb3e52256169496edf76ee19bb69da92cdc136409641e7a1352c4c1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72cf3ea1fb3e52256169496edf76ee19bb69da92cdc136409641e7a1352c4c1d", kill_on_drop: false }`
[INFO] [stdout] 72cf3ea1fb3e52256169496edf76ee19bb69da92cdc136409641e7a1352c4c1d
[INFO] checking lotus-lib-2.2.2 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate lotus-lib 2.2.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate lotus-lib 2.2.2 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 lotus-lib 2.2.2
[INFO] finished tweaking crates.io crate lotus-lib 2.2.2
[INFO] tweaked toml for crates.io crate lotus-lib 2.2.2 written to /workspace/builds/worker-0-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding lz4_flex v0.9.5 (latest: v0.11.3)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7bad3eceea77f54a7489d88b858f98900ef85e5dcbcbc861e4521f593b9f72e5
[INFO] running `Command { std: "docker" "start" "-a" "7bad3eceea77f54a7489d88b858f98900ef85e5dcbcbc861e4521f593b9f72e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bad3eceea77f54a7489d88b858f98900ef85e5dcbcbc861e4521f593b9f72e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bad3eceea77f54a7489d88b858f98900ef85e5dcbcbc861e4521f593b9f72e5", kill_on_drop: false }`
[INFO] [stdout] 7bad3eceea77f54a7489d88b858f98900ef85e5dcbcbc861e4521f593b9f72e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8e593cb165ac57a2958696b9603004a35679a1c3c55351cba6a7f445f0db186d
[INFO] running `Command { std: "docker" "start" "-a" "8e593cb165ac57a2958696b9603004a35679a1c3c55351cba6a7f445f0db186d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling scratch v1.0.7
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.120
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling link-cplusplus v1.0.9
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]    Compiling cxx v1.0.120
[INFO] [stderr]     Checking lz4_flex v0.9.5
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling cxx-build v1.0.120
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.120
[INFO] [stderr]    Compiling oozle v0.1.5
[INFO] [stderr]     Checking lotus-lib v2.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.90s
[INFO] running `Command { std: "docker" "inspect" "8e593cb165ac57a2958696b9603004a35679a1c3c55351cba6a7f445f0db186d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e593cb165ac57a2958696b9603004a35679a1c3c55351cba6a7f445f0db186d", kill_on_drop: false }`
[INFO] [stdout] 8e593cb165ac57a2958696b9603004a35679a1c3c55351cba6a7f445f0db186d