[INFO] cloning repository https://github.com/Nilstrieb/libuwuc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nilstrieb/libuwuc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNilstrieb%2Flibuwuc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNilstrieb%2Flibuwuc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dfdf45b5c76013e9f7b54c10ad64e0d0a39ea5a3
[INFO] testing Nilstrieb/libuwuc against master#160e7623e8cbbf1feab2b6e2a24733a98c7bde9c for pr-145628-retry-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNilstrieb%2Flibuwuc" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Nilstrieb/libuwuc
[INFO] finished tweaking git repo https://github.com/Nilstrieb/libuwuc
[INFO] tweaked toml for git repo https://github.com/Nilstrieb/libuwuc written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Nilstrieb/libuwuc on toolchain 160e7623e8cbbf1feab2b6e2a24733a98c7bde9c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Nilstrieb/libuwuc 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" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linked_list_allocator v0.10.5
[INFO] [stderr]   Downloaded lock_api v0.4.10
[INFO] [stderr]   Downloaded spinning_top v0.2.5
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f242a1e5cc4e87aedac5dea4a8df43d9ba5e6afa21b2a123c604e7a1cf732d5a
[INFO] running `Command { std: "docker" "start" "-a" "f242a1e5cc4e87aedac5dea4a8df43d9ba5e6afa21b2a123c604e7a1cf732d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f242a1e5cc4e87aedac5dea4a8df43d9ba5e6afa21b2a123c604e7a1cf732d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f242a1e5cc4e87aedac5dea4a8df43d9ba5e6afa21b2a123c604e7a1cf732d5a", kill_on_drop: false }`
[INFO] [stdout] f242a1e5cc4e87aedac5dea4a8df43d9ba5e6afa21b2a123c604e7a1cf732d5a
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+160e7623e8cbbf1feab2b6e2a24733a98c7bde9c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12f28b5f724514d8b68197d90f8847081063c8c05160b8d9ba1242a05c8bf176
[INFO] running `Command { std: "docker" "start" "-a" "12f28b5f724514d8b68197d90f8847081063c8c05160b8d9ba1242a05c8bf176", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling rawc v0.1.0 (/opt/rustwide/workdir/rawc)
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling spinning_top v0.2.5
[INFO] [stderr]    Compiling linked_list_allocator v0.10.5
[INFO] [stderr]    Compiling libuwuc v0.1.0 (/opt/rustwide/workdir/libuwuc)
[INFO] [stdout] error[E0277]: the trait bound `u8: VaArgSafe` is not satisfied
[INFO] [stdout]   --> libuwuc/src/fmt/printf.rs:20:43
[INFO] [stdout]    |
[INFO] [stdout] 20 |                     let char = args.arg::<u8>();
[INFO] [stdout]    |                                     ---   ^^ the trait `VaArgSafe` is not implemented for `u8`
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     required by a bound introduced by this call
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following other types implement trait `VaArgSafe`:
[INFO] [stdout]              f64
[INFO] [stdout]              i32
[INFO] [stdout]              i64
[INFO] [stdout]              isize
[INFO] [stdout]              u32
[INFO] [stdout]              u64
[INFO] [stdout]              usize
[INFO] [stdout] note: required by a bound in `VaListImpl::<'f>::arg`
[INFO] [stdout]   --> /rustc/160e7623e8cbbf1feab2b6e2a24733a98c7bde9c/library/core/src/ffi/va_list.rs:238:5
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libuwuc` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "12f28b5f724514d8b68197d90f8847081063c8c05160b8d9ba1242a05c8bf176", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12f28b5f724514d8b68197d90f8847081063c8c05160b8d9ba1242a05c8bf176", kill_on_drop: false }`
[INFO] [stdout] 12f28b5f724514d8b68197d90f8847081063c8c05160b8d9ba1242a05c8bf176