[INFO] cloning repository https://github.com/mdekstrand/probzoo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdekstrand/probzoo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdekstrand%2Fprobzoo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdekstrand%2Fprobzoo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 09356cf598cf943f00342aa03c063f0a5e5fe9de
[INFO] checking mdekstrand/probzoo against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdekstrand%2Fprobzoo" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdekstrand/probzoo 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 git repo https://github.com/mdekstrand/probzoo
[INFO] finished tweaking git repo https://github.com/mdekstrand/probzoo
[INFO] tweaked toml for git repo https://github.com/mdekstrand/probzoo written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mdekstrand/probzoo 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.64
[INFO] [stderr]   Downloaded js-sys v0.3.41
[INFO] [stderr]   Downloaded serde-wasm-bindgen v0.1.3
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.64
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.64
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.64
[INFO] [stderr]   Downloaded web-sys v0.3.41
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.64
[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] dba409c7ed7d66ac0e36da5937114cfa05b4b367167e330a2a94b55d9e8f1a1d
[INFO] running `Command { std: "docker" "start" "-a" "dba409c7ed7d66ac0e36da5937114cfa05b4b367167e330a2a94b55d9e8f1a1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dba409c7ed7d66ac0e36da5937114cfa05b4b367167e330a2a94b55d9e8f1a1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dba409c7ed7d66ac0e36da5937114cfa05b4b367167e330a2a94b55d9e8f1a1d", kill_on_drop: false }`
[INFO] [stdout] dba409c7ed7d66ac0e36da5937114cfa05b4b367167e330a2a94b55d9e8f1a1d
[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] 373685efb26b9b9e9272f07f43c698756c12a19551fa209c737fdd1b2f8d4088
[INFO] running `Command { std: "docker" "start" "-a" "373685efb26b9b9e9272f07f43c698756c12a19551fa209c737fdd1b2f8d4088", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.64
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling bumpalo v3.12.0
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling wasm-bindgen v0.2.64
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.50
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.64
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.64
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.64
[INFO] [stderr]     Checking js-sys v0.3.41
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking serde-wasm-bindgen v0.1.3
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.27
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.50
[INFO] [stderr]     Checking probzoo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.36s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.64
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "373685efb26b9b9e9272f07f43c698756c12a19551fa209c737fdd1b2f8d4088", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "373685efb26b9b9e9272f07f43c698756c12a19551fa209c737fdd1b2f8d4088", kill_on_drop: false }`
[INFO] [stdout] 373685efb26b9b9e9272f07f43c698756c12a19551fa209c737fdd1b2f8d4088
[INFO] checking mdekstrand/probzoo against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdekstrand%2Fprobzoo" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdekstrand/probzoo 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 git repo https://github.com/mdekstrand/probzoo
[INFO] finished tweaking git repo https://github.com/mdekstrand/probzoo
[INFO] tweaked toml for git repo https://github.com/mdekstrand/probzoo written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mdekstrand/probzoo 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] eef1d96fc9b9d8e9dff518c96660af4a29ebd09a6f90534a0bc197bd98303718
[INFO] running `Command { std: "docker" "start" "-a" "eef1d96fc9b9d8e9dff518c96660af4a29ebd09a6f90534a0bc197bd98303718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eef1d96fc9b9d8e9dff518c96660af4a29ebd09a6f90534a0bc197bd98303718", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eef1d96fc9b9d8e9dff518c96660af4a29ebd09a6f90534a0bc197bd98303718", kill_on_drop: false }`
[INFO] [stdout] eef1d96fc9b9d8e9dff518c96660af4a29ebd09a6f90534a0bc197bd98303718
[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] 3e15725725e408c4c01c51eb23f3ce836ddf7bf357d85419653c94dbd9b39a0e
[INFO] running `Command { std: "docker" "start" "-a" "3e15725725e408c4c01c51eb23f3ce836ddf7bf357d85419653c94dbd9b39a0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.64
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling bumpalo v3.12.0
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling wasm-bindgen v0.2.64
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.50
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.64
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.64
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.64
[INFO] [stderr]     Checking js-sys v0.3.41
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.27
[INFO] [stderr]     Checking serde-wasm-bindgen v0.1.3
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.50
[INFO] [stderr]     Checking probzoo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.02s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.64
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "3e15725725e408c4c01c51eb23f3ce836ddf7bf357d85419653c94dbd9b39a0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e15725725e408c4c01c51eb23f3ce836ddf7bf357d85419653c94dbd9b39a0e", kill_on_drop: false }`
[INFO] [stdout] 3e15725725e408c4c01c51eb23f3ce836ddf7bf357d85419653c94dbd9b39a0e