[INFO] fetching crate little-skeptic 0.15.2...
[INFO] checking little-skeptic-0.15.2 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate little-skeptic 0.15.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate little-skeptic 0.15.2 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate little-skeptic 0.15.2
[INFO] finished tweaking crates.io crate little-skeptic 0.15.2
[INFO] tweaked toml for crates.io crate little-skeptic 0.15.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pulldown-cmark v0.5.3
[INFO] [stderr]   Downloaded bytecount v0.5.1
[INFO] [stderr]   Downloaded cargo_metadata v0.8.2
[INFO] [stderr]   Downloaded hashbrown v0.5.0
[INFO] [stderr]   Downloaded error-chain v0.12.4
[INFO] [stderr]   Downloaded handlebars v2.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7992268ab54404616e15598a5f1abd8ea893fde563ea14bef042c4e99839aa6
[INFO] running `Command { std: "docker" "start" "-a" "b7992268ab54404616e15598a5f1abd8ea893fde563ea14bef042c4e99839aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7992268ab54404616e15598a5f1abd8ea893fde563ea14bef042c4e99839aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7992268ab54404616e15598a5f1abd8ea893fde563ea14bef042c4e99839aa6", kill_on_drop: false }`
[INFO] [stdout] b7992268ab54404616e15598a5f1abd8ea893fde563ea14bef042c4e99839aa6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8e9ac8a2640c25426834ef4d0daadc8d63933873fa7211921353ad7069a0efa
[INFO] running `Command { std: "docker" "start" "-a" "b8e9ac8a2640c25426834ef4d0daadc8d63933873fa7211921353ad7069a0efa", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking bytecount v0.5.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking handlebars v2.0.4
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking cargo_metadata v0.8.2
[INFO] [stderr]     Checking little-skeptic v0.15.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.50s
[INFO] running `Command { std: "docker" "inspect" "b8e9ac8a2640c25426834ef4d0daadc8d63933873fa7211921353ad7069a0efa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8e9ac8a2640c25426834ef4d0daadc8d63933873fa7211921353ad7069a0efa", kill_on_drop: false }`
[INFO] [stdout] b8e9ac8a2640c25426834ef4d0daadc8d63933873fa7211921353ad7069a0efa