[INFO] crate reproto-backend 0.3.36 is already in cache
[INFO] testing reproto-backend-0.3.36 against 1.38.0 for beta-1.39-1
[INFO] extracting crate reproto-backend 0.3.36 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate reproto-backend 0.3.36 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate reproto-backend 0.3.36
[INFO] finished tweaking crates.io crate reproto-backend 0.3.36
[INFO] tweaked toml for crates.io crate reproto-backend 0.3.36 written to work/builds/worker-2/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] c1a9eeef42b7028dfa4aa27e76f95d29d17ab810f9423d8740b8e4527087127e
[INFO] running `"docker" "start" "-a" "c1a9eeef42b7028dfa4aa27e76f95d29d17ab810f9423d8740b8e4527087127e"`
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling lalrpop-util v0.15.2
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling ena v0.5.0
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling reproto-path-lexer v0.3.36
[INFO] [stderr]    Compiling lalrpop-util v0.13.1
[INFO] [stderr]    Compiling reproto-naming v0.3.36
[INFO] [stderr]    Compiling genco v0.3.30
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling atty v0.1.2
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling digest v0.7.6
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling sha2 v0.7.1
[INFO] [stderr]    Compiling reproto-lexer v0.3.36
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling reproto-ast v0.3.36
[INFO] [stderr]    Compiling string_cache v0.7.4
[INFO] [stderr] warning[E0521]: borrowed data escapes outside of function
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/genco-0.3.30/src/js.rs:139:32
[INFO] [stderr]     |
[INFO] [stderr] 132 |         tokens: Tokens<'a, JavaScript<'a>>,
[INFO] [stderr]     |         ------ `tokens` is a reference that is only valid in the function body
[INFO] [stderr] 133 |         out: &mut Formatter,
[INFO] [stderr] 134 |         extra: &mut Self::Extra,
[INFO] [stderr]     |         ----- `extra` is declared here, outside of the function body
[INFO] [stderr] ...
[INFO] [stderr] 139 |         if let Some(imports) = Self::imports(&tokens) {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^ `tokens` escapes the function body here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0597]: `tokens` does not live long enough
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/genco-0.3.30/src/js.rs:139:46
[INFO] [stderr]     |
[INFO] [stderr] 102 | impl<'el> Custom for JavaScript<'el> {
[INFO] [stderr]     |      --- lifetime `'el` defined here
[INFO] [stderr] ...
[INFO] [stderr] 139 |         if let Some(imports) = Self::imports(&tokens) {
[INFO] [stderr]     |                                --------------^^^^^^^-
[INFO] [stderr]     |                                |             |
[INFO] [stderr]     |                                |             borrowed value does not live long enough
[INFO] [stderr]     |                                argument requires that `tokens` is borrowed for `'el`
[INFO] [stderr] ...
[INFO] [stderr] 145 |     }
[INFO] [stderr]     |     - `tokens` dropped here while still borrowed
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling lalrpop-snap v0.15.2
[INFO] [stderr] error: Could not compile `lalrpop-snap`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name lalrpop_snap /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lalrpop-snap-0.15.2/src/lib.rs --color never --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 -C metadata=5766e133395ec961 -C extra-filename=-5766e133395ec961 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ascii_canvas=/opt/rustwide/target/debug/deps/libascii_canvas-631af1d7463f717b.rmeta --extern atty=/opt/rustwide/target/debug/deps/libatty-a33f5fd861a1a371.rmeta --extern bit_set=/opt/rustwide/target/debug/deps/libbit_set-e36651d3f15e3804.rmeta --extern diff=/opt/rustwide/target/debug/deps/libdiff-4cfc352f517d85fa.rmeta --extern ena=/opt/rustwide/target/debug/deps/libena-3ecaa4f41a0b0877.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-12e2d7c1acb8bb33.rmeta --extern lalrpop_util=/opt/rustwide/target/debug/deps/liblalrpop_util-88963d5517ce7660.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-3f834334a017f2a6.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-a6dad98604613b54.rmeta --extern regex_syntax=/opt/rustwide/target/debug/deps/libregex_syntax-d7d5b9ed89182acb.rmeta --extern string_cache=/opt/rustwide/target/debug/deps/libstring_cache-40417bf3685cd2d4.rmeta --extern term=/opt/rustwide/target/debug/deps/libterm-d2c5055e753c23d4.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-db534cf3c78b3692.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "c1a9eeef42b7028dfa4aa27e76f95d29d17ab810f9423d8740b8e4527087127e"`
[INFO] running `"docker" "rm" "-f" "c1a9eeef42b7028dfa4aa27e76f95d29d17ab810f9423d8740b8e4527087127e"`
[INFO] [stdout] c1a9eeef42b7028dfa4aa27e76f95d29d17ab810f9423d8740b8e4527087127e