[INFO] cloning repository https://github.com/johnvtan/youdontmatterworry
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnvtan/youdontmatterworry" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnvtan%2Fyoudontmatterworry", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnvtan%2Fyoudontmatterworry'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 79efe15c8da0101e400691d5554036aea7025c55
[INFO] checking johnvtan/youdontmatterworry against try#cde356bd79f103d9897ada6234862d1d3e511791 for pr-114586
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnvtan%2Fyoudontmatterworry" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnvtan/youdontmatterworry on toolchain cde356bd79f103d9897ada6234862d1d3e511791
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cde356bd79f103d9897ada6234862d1d3e511791" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johnvtan/youdontmatterworry
[INFO] finished tweaking git repo https://github.com/johnvtan/youdontmatterworry
[INFO] tweaked toml for git repo https://github.com/johnvtan/youdontmatterworry written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/johnvtan/youdontmatterworry 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" "+cde356bd79f103d9897ada6234862d1d3e511791" "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@sha256:84cb280c7acaf12c1f874411053406050a24f846e52f817d4d9e64bcbe5ce959" "/opt/rustwide/cargo-home/bin/cargo" "+cde356bd79f103d9897ada6234862d1d3e511791" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c44e89709bd5e055dcebc24f0fd3f866ae8e47efc2c4a675155a10ad0c8310ef
[INFO] running `Command { std: "docker" "start" "-a" "c44e89709bd5e055dcebc24f0fd3f866ae8e47efc2c4a675155a10ad0c8310ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c44e89709bd5e055dcebc24f0fd3f866ae8e47efc2c4a675155a10ad0c8310ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c44e89709bd5e055dcebc24f0fd3f866ae8e47efc2c4a675155a10ad0c8310ef", kill_on_drop: false }`
[INFO] [stdout] c44e89709bd5e055dcebc24f0fd3f866ae8e47efc2c4a675155a10ad0c8310ef
[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@sha256:84cb280c7acaf12c1f874411053406050a24f846e52f817d4d9e64bcbe5ce959" "/opt/rustwide/cargo-home/bin/cargo" "+cde356bd79f103d9897ada6234862d1d3e511791" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2e9d44a4e10a3052ac02798cb768f44ae9c3a1187c36091fee5a9e5a1342bb7
[INFO] running `Command { std: "docker" "start" "-a" "a2e9d44a4e10a3052ac02798cb768f44ae9c3a1187c36091fee5a9e5a1342bb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr] thread 'rustc' panicked at compiler/rustc_metadata/src/rmeta/encoder.rs:442:9:
[INFO] [stderr] error: could not compile `serde` (lib)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a2e9d44a4e10a3052ac02798cb768f44ae9c3a1187c36091fee5a9e5a1342bb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2e9d44a4e10a3052ac02798cb768f44ae9c3a1187c36091fee5a9e5a1342bb7", kill_on_drop: false }`
[INFO] [stdout] a2e9d44a4e10a3052ac02798cb768f44ae9c3a1187c36091fee5a9e5a1342bb7