[INFO] updating cached repository icew4ll/spam
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/icew4ll/spam
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/icew4ll/spam" "work/ex/beta-1.38-1/sources/1.37.0/gh/icew4ll/spam"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/icew4ll/spam'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/icew4ll/spam" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/icew4ll/spam"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/icew4ll/spam'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4a84440c7fb859327291763291d4c739cc0637a2
[INFO] sha for GitHub repo icew4ll/spam: 4a84440c7fb859327291763291d4c739cc0637a2
[INFO] validating manifest of icew4ll/spam on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of icew4ll/spam on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing icew4ll/spam
[INFO] finished frobbing icew4ll/spam
[INFO] frobbed toml for icew4ll/spam written to work/ex/beta-1.38-1/sources/1.37.0/gh/icew4ll/spam/Cargo.toml
[INFO] started frobbing icew4ll/spam
[INFO] finished frobbing icew4ll/spam
[INFO] frobbed toml for icew4ll/spam written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/icew4ll/spam/Cargo.toml
[INFO] crate icew4ll/spam already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing icew4ll/spam against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/icew4ll/spam:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 823bce582f03b0c39f65fdc3e62cc3965c671f84c6f81d27af1d6cabc7a984d0
[INFO] running `"docker" "start" "-a" "823bce582f03b0c39f65fdc3e62cc3965c671f84c6f81d27af1d6cabc7a984d0"`
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.0
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling term v0.5.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling shared_child v0.3.2
[INFO] [stderr]    Compiling backtrace v0.3.8
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling proc-macro-hack v0.4.0
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling prettytable-rs v0.7.0
[INFO] [stderr]    Compiling rayon v0.9.0
[INFO] [stderr]    Compiling structopt-derive v0.2.8
[INFO] [stderr]    Compiling dotenv v0.8.0
[INFO] [stderr]    Compiling dotenv_codegen_impl v0.1.0
[INFO] [stderr]    Compiling os_pipe v0.6.1
[INFO] [stderr]    Compiling duct v0.10.0
[INFO] [stderr]    Compiling dotenv_codegen v0.11.0
[INFO] [stderr]    Compiling env_logger v0.5.10
[INFO] [stderr]    Compiling structopt v0.2.8
[INFO] [stderr]    Compiling quicli v0.2.0
[INFO] [stderr]    Compiling spam v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: proc-macro derive panicked
[INFO] [stderr]   --> src/main.rs:39:13
[INFO] [stderr]    |
[INFO] [stderr] 39 |             dotenv!("U3").to_string(),
[INFO] [stderr]    |             ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: message: environment variable `U3` not defined
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `spam`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "823bce582f03b0c39f65fdc3e62cc3965c671f84c6f81d27af1d6cabc7a984d0"`
[INFO] running `"docker" "rm" "-f" "823bce582f03b0c39f65fdc3e62cc3965c671f84c6f81d27af1d6cabc7a984d0"`
[INFO] [stdout] 823bce582f03b0c39f65fdc3e62cc3965c671f84c6f81d27af1d6cabc7a984d0