[INFO] fetching crate better-panic 0.3.0...
[INFO] checking better-panic-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate better-panic 0.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate better-panic 0.3.0 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 better-panic 0.3.0
[INFO] finished tweaking crates.io crate better-panic 0.3.0
[INFO] tweaked toml for crates.io crate better-panic 0.3.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate better-panic 0.3.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linked-hash-map v0.5.4
[INFO] [stderr]   Downloaded walkdir v2.3.2
[INFO] [stderr]   Downloaded itoa v1.0.1
[INFO] [stderr]   Downloaded console v0.15.0
[INFO] [stderr]   Downloaded lazycell v1.3.0
[INFO] [stderr]   Downloaded ryu v1.0.9
[INFO] [stderr]   Downloaded pkg-config v0.3.24
[INFO] [stderr]   Downloaded addr2line v0.17.0
[INFO] [stderr]   Downloaded backtrace v0.3.63
[INFO] [stderr]   Downloaded serde_json v1.0.74
[INFO] [stderr]   Downloaded object v0.27.1
[INFO] [stderr]   Downloaded syn v1.0.85
[INFO] [stderr]   Downloaded libc v0.2.112
[INFO] [stderr]   Downloaded gimli v0.26.1
[INFO] [stderr]   Downloaded onig_sys v69.7.1
[INFO] [stderr]   Downloaded syntect v4.6.0
[INFO] [stderr]   Downloaded once_cell v1.9.0
[INFO] [stderr]   Downloaded flate2 v1.0.22
[INFO] [stderr]   Downloaded cc v1.0.72
[INFO] [stderr]   Downloaded time v0.3.5
[INFO] [stderr]   Downloaded crc32fast v1.3.0
[INFO] [stderr]   Downloaded onig v6.3.1
[INFO] [stderr]   Downloaded indexmap v1.8.0
[INFO] [stderr]   Downloaded plist v1.3.1
[INFO] [stderr]   Downloaded quote v1.0.14
[INFO] [stderr]   Downloaded serde_derive v1.0.133
[INFO] [stderr]   Downloaded serde v1.0.133
[INFO] [stderr]   Downloaded proc-macro2 v1.0.36
[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] fa7c6183df4bbbc16fc17ffb48ea0925478d771666cbdaa2047bdc12ae386492
[INFO] running `Command { std: "docker" "start" "-a" "fa7c6183df4bbbc16fc17ffb48ea0925478d771666cbdaa2047bdc12ae386492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa7c6183df4bbbc16fc17ffb48ea0925478d771666cbdaa2047bdc12ae386492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa7c6183df4bbbc16fc17ffb48ea0925478d771666cbdaa2047bdc12ae386492", kill_on_drop: false }`
[INFO] [stdout] fa7c6183df4bbbc16fc17ffb48ea0925478d771666cbdaa2047bdc12ae386492
[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] 6c753cf19f823ca228ab7f4a58a080ccf1451e63ec452fc6c1b0fc50cf2e5b9c
[INFO] running `Command { std: "docker" "start" "-a" "6c753cf19f823ca228ab7f4a58a080ccf1451e63ec452fc6c1b0fc50cf2e5b9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking better-panic v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.29s
[INFO] running `Command { std: "docker" "inspect" "6c753cf19f823ca228ab7f4a58a080ccf1451e63ec452fc6c1b0fc50cf2e5b9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c753cf19f823ca228ab7f4a58a080ccf1451e63ec452fc6c1b0fc50cf2e5b9c", kill_on_drop: false }`
[INFO] [stdout] 6c753cf19f823ca228ab7f4a58a080ccf1451e63ec452fc6c1b0fc50cf2e5b9c
[INFO] checking better-panic-0.3.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate better-panic 0.3.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate better-panic 0.3.0 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 better-panic 0.3.0
[INFO] finished tweaking crates.io crate better-panic 0.3.0
[INFO] tweaked toml for crates.io crate better-panic 0.3.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate better-panic 0.3.0 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" "+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] 1c5cdaf3d32c2fc6bf80f9e03dc6d77f4e29d9bc3eae42265f2a002ab3f1255a
[INFO] running `Command { std: "docker" "start" "-a" "1c5cdaf3d32c2fc6bf80f9e03dc6d77f4e29d9bc3eae42265f2a002ab3f1255a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c5cdaf3d32c2fc6bf80f9e03dc6d77f4e29d9bc3eae42265f2a002ab3f1255a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c5cdaf3d32c2fc6bf80f9e03dc6d77f4e29d9bc3eae42265f2a002ab3f1255a", kill_on_drop: false }`
[INFO] [stdout] 1c5cdaf3d32c2fc6bf80f9e03dc6d77f4e29d9bc3eae42265f2a002ab3f1255a
[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] a550e1b47b9fe6ee5da18a351a635b152b947c22100a42c9178cf036ec154b64
[INFO] running `Command { std: "docker" "start" "-a" "a550e1b47b9fe6ee5da18a351a635b152b947c22100a42c9178cf036ec154b64", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking better-panic v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `Command { std: "docker" "inspect" "a550e1b47b9fe6ee5da18a351a635b152b947c22100a42c9178cf036ec154b64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a550e1b47b9fe6ee5da18a351a635b152b947c22100a42c9178cf036ec154b64", kill_on_drop: false }`
[INFO] [stdout] a550e1b47b9fe6ee5da18a351a635b152b947c22100a42c9178cf036ec154b64