[INFO] fetching crate prom-write 0.2.1...
[INFO] checking prom-write-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate prom-write 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate prom-write 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 prom-write 0.2.1
[INFO] finished tweaking crates.io crate prom-write 0.2.1
[INFO] tweaked toml for crates.io crate prom-write 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate prom-write 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] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prometheus-parse v0.2.4
[INFO] [stderr]   Downloaded prometheus_remote_write v0.2.1
[INFO] [stderr]   Downloaded snap v1.1.0
[INFO] [stderr]   Downloaded webpki-roots v0.25.2
[INFO] [stderr]   Downloaded rustls v0.21.8
[INFO] [stderr]   Downloaded ring v0.17.5
[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] bd6faa5fa727d5576b087a661fcd79f87b82cb24e3e97ce43af1e62d18bd0cad
[INFO] running `Command { std: "docker" "start" "-a" "bd6faa5fa727d5576b087a661fcd79f87b82cb24e3e97ce43af1e62d18bd0cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd6faa5fa727d5576b087a661fcd79f87b82cb24e3e97ce43af1e62d18bd0cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd6faa5fa727d5576b087a661fcd79f87b82cb24e3e97ce43af1e62d18bd0cad", kill_on_drop: false }`
[INFO] [stdout] bd6faa5fa727d5576b087a661fcd79f87b82cb24e3e97ce43af1e62d18bd0cad
[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] 98c7bcaf20b04dfa38d2475908520d5232c0f37301ce4ce1b2ee3d98ee46b306
[INFO] running `Command { std: "docker" "start" "-a" "98c7bcaf20b04dfa38d2475908520d5232c0f37301ce4ce1b2ee3d98ee46b306", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling rustls v0.21.8
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.28.0
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling snap v1.1.0
[INFO] [stderr]     Checking iana-time-zone v0.1.58
[INFO] [stderr]     Checking url v2.4.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking object v0.32.1
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling ring v0.17.5
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking base64 v0.21.5
[INFO] [stderr]     Checking webpki-roots v0.25.2
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]    Compiling prost-derive v0.12.1
[INFO] [stderr]     Checking prometheus-parse v0.2.4
[INFO] [stderr]     Checking prost v0.12.1
[INFO] [stderr]     Checking prometheus_remote_write v0.2.1
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking ureq v2.8.0
[INFO] [stderr]     Checking prom-write v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.70s
[INFO] running `Command { std: "docker" "inspect" "98c7bcaf20b04dfa38d2475908520d5232c0f37301ce4ce1b2ee3d98ee46b306", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98c7bcaf20b04dfa38d2475908520d5232c0f37301ce4ce1b2ee3d98ee46b306", kill_on_drop: false }`
[INFO] [stdout] 98c7bcaf20b04dfa38d2475908520d5232c0f37301ce4ce1b2ee3d98ee46b306
[INFO] checking prom-write-0.2.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate prom-write 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate prom-write 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 prom-write 0.2.1
[INFO] finished tweaking crates.io crate prom-write 0.2.1
[INFO] tweaked toml for crates.io crate prom-write 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate prom-write 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-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] 8204dc0d97babe0381189d7b28dd1ef45772cea3fbcb2a84a2bcfad650b1588e
[INFO] running `Command { std: "docker" "start" "-a" "8204dc0d97babe0381189d7b28dd1ef45772cea3fbcb2a84a2bcfad650b1588e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8204dc0d97babe0381189d7b28dd1ef45772cea3fbcb2a84a2bcfad650b1588e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8204dc0d97babe0381189d7b28dd1ef45772cea3fbcb2a84a2bcfad650b1588e", kill_on_drop: false }`
[INFO] [stdout] 8204dc0d97babe0381189d7b28dd1ef45772cea3fbcb2a84a2bcfad650b1588e
[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] 40c829bd3b2fc8992ca5e8a9fd4a37acc2c1d6cf6160453db6d9ca04668bc98e
[INFO] running `Command { std: "docker" "start" "-a" "40c829bd3b2fc8992ca5e8a9fd4a37acc2c1d6cf6160453db6d9ca04668bc98e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]    Compiling snap v1.1.0
[INFO] [stderr]     Checking idna v0.4.0
[INFO] [stderr]    Compiling rustls v0.21.8
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking gimli v0.28.0
[INFO] [stderr]     Checking iana-time-zone v0.1.58
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]     Checking url v2.4.1
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking object v0.32.1
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]    Compiling ring v0.17.5
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]     Checking base64 v0.21.5
[INFO] [stderr]     Checking webpki-roots v0.25.2
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]    Compiling prost-derive v0.12.1
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking prometheus-parse v0.2.4
[INFO] [stderr]     Checking prost v0.12.1
[INFO] [stderr]     Checking prometheus_remote_write v0.2.1
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking ureq v2.8.0
[INFO] [stderr]     Checking prom-write v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.89s
[INFO] running `Command { std: "docker" "inspect" "40c829bd3b2fc8992ca5e8a9fd4a37acc2c1d6cf6160453db6d9ca04668bc98e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40c829bd3b2fc8992ca5e8a9fd4a37acc2c1d6cf6160453db6d9ca04668bc98e", kill_on_drop: false }`
[INFO] [stdout] 40c829bd3b2fc8992ca5e8a9fd4a37acc2c1d6cf6160453db6d9ca04668bc98e