[INFO] cloning repository https://github.com/wfraser/unicoder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wfraser/unicoder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwfraser%2Funicoder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwfraser%2Funicoder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6757f74d8402f025619df283f24782f95fe78035
[INFO] checking wfraser/unicoder against try#51ad93974f526eaf4ede64932870490e6c96e4fd for pr-103293
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwfraser%2Funicoder" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wfraser/unicoder on toolchain 51ad93974f526eaf4ede64932870490e6c96e4fd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+51ad93974f526eaf4ede64932870490e6c96e4fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wfraser/unicoder
[INFO] finished tweaking git repo https://github.com/wfraser/unicoder
[INFO] tweaked toml for git repo https://github.com/wfraser/unicoder written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/wfraser/unicoder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+51ad93974f526eaf4ede64932870490e6c96e4fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+51ad93974f526eaf4ede64932870490e6c96e4fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8c5a5db230dc7afbc466017191f02aa739841817788ceec4eee327e007f14cf
[INFO] running `Command { std: "docker" "start" "-a" "f8c5a5db230dc7afbc466017191f02aa739841817788ceec4eee327e007f14cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8c5a5db230dc7afbc466017191f02aa739841817788ceec4eee327e007f14cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8c5a5db230dc7afbc466017191f02aa739841817788ceec4eee327e007f14cf", kill_on_drop: false }`
[INFO] [stdout] f8c5a5db230dc7afbc466017191f02aa739841817788ceec4eee327e007f14cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+51ad93974f526eaf4ede64932870490e6c96e4fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2d93bf5d61a927df71fb39fd68e4bc13a2b59798ede5ed05c875d353317dcac
[INFO] running `Command { std: "docker" "start" "-a" "c2d93bf5d61a927df71fb39fd68e4bc13a2b59798ede5ed05c875d353317dcac", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking unicode_names2 v0.4.0
[INFO] [stderr]     Checking ucd v0.1.1
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr] thread 'rustc' panicked at 'assertion failed: pos.get() <= self.position()', compiler/rustc_metadata/src/rmeta/encoder.rs:425:9
[INFO] [stderr] error: could not compile `ucd`
[INFO] running `Command { std: "docker" "inspect" "c2d93bf5d61a927df71fb39fd68e4bc13a2b59798ede5ed05c875d353317dcac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2d93bf5d61a927df71fb39fd68e4bc13a2b59798ede5ed05c875d353317dcac", kill_on_drop: false }`
[INFO] [stdout] c2d93bf5d61a927df71fb39fd68e4bc13a2b59798ede5ed05c875d353317dcac