[INFO] fetching crate qrcode-png 0.4.1...
[INFO] checking qrcode-png-0.4.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate qrcode-png 0.4.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate qrcode-png 0.4.1 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 qrcode-png 0.4.1
[INFO] finished tweaking crates.io crate qrcode-png 0.4.1
[INFO] tweaked toml for crates.io crate qrcode-png 0.4.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate qrcode-png 0.4.1 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 png v0.17.6
[INFO] [stderr]   Downloaded qrcodegen v1.8.0
[INFO] [stderr]   Downloaded miniz_oxide v0.5.4
[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] f57748d57baf9b8c8a229b535cb5a83ffefa21042fbff85e24e7826cc6ab516a
[INFO] running `Command { std: "docker" "start" "-a" "f57748d57baf9b8c8a229b535cb5a83ffefa21042fbff85e24e7826cc6ab516a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f57748d57baf9b8c8a229b535cb5a83ffefa21042fbff85e24e7826cc6ab516a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f57748d57baf9b8c8a229b535cb5a83ffefa21042fbff85e24e7826cc6ab516a", kill_on_drop: false }`
[INFO] [stdout] f57748d57baf9b8c8a229b535cb5a83ffefa21042fbff85e24e7826cc6ab516a
[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] 1cb7e427fe849d17ab6eaccaa00eb2f4436e847fe42208add8f250fa66a93986
[INFO] running `Command { std: "docker" "start" "-a" "1cb7e427fe849d17ab6eaccaa00eb2f4436e847fe42208add8f250fa66a93986", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking qrcodegen v1.8.0
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking png v0.17.6
[INFO] [stderr]     Checking qrcode-png v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.44s
[INFO] running `Command { std: "docker" "inspect" "1cb7e427fe849d17ab6eaccaa00eb2f4436e847fe42208add8f250fa66a93986", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cb7e427fe849d17ab6eaccaa00eb2f4436e847fe42208add8f250fa66a93986", kill_on_drop: false }`
[INFO] [stdout] 1cb7e427fe849d17ab6eaccaa00eb2f4436e847fe42208add8f250fa66a93986
[INFO] checking qrcode-png-0.4.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate qrcode-png 0.4.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate qrcode-png 0.4.1 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 qrcode-png 0.4.1
[INFO] finished tweaking crates.io crate qrcode-png 0.4.1
[INFO] tweaked toml for crates.io crate qrcode-png 0.4.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate qrcode-png 0.4.1 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] 2e51ce3c76a443b2cab1fa8212dc886bf3fa229834e20e55a492cc30c72ff29c
[INFO] running `Command { std: "docker" "start" "-a" "2e51ce3c76a443b2cab1fa8212dc886bf3fa229834e20e55a492cc30c72ff29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e51ce3c76a443b2cab1fa8212dc886bf3fa229834e20e55a492cc30c72ff29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e51ce3c76a443b2cab1fa8212dc886bf3fa229834e20e55a492cc30c72ff29c", kill_on_drop: false }`
[INFO] [stdout] 2e51ce3c76a443b2cab1fa8212dc886bf3fa229834e20e55a492cc30c72ff29c
[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] 093ad6f9f86437955fdac72002ab324458df676097cf28cf0aaa1d433f3b3590
[INFO] running `Command { std: "docker" "start" "-a" "093ad6f9f86437955fdac72002ab324458df676097cf28cf0aaa1d433f3b3590", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking qrcodegen v1.8.0
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking png v0.17.6
[INFO] [stderr]     Checking qrcode-png v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.55s
[INFO] running `Command { std: "docker" "inspect" "093ad6f9f86437955fdac72002ab324458df676097cf28cf0aaa1d433f3b3590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "093ad6f9f86437955fdac72002ab324458df676097cf28cf0aaa1d433f3b3590", kill_on_drop: false }`
[INFO] [stdout] 093ad6f9f86437955fdac72002ab324458df676097cf28cf0aaa1d433f3b3590