[INFO] updating cached repository HermannDppes/doctails
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/HermannDppes/doctails
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/HermannDppes/doctails" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/HermannDppes/doctails"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/HermannDppes/doctails'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/HermannDppes/doctails" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/HermannDppes/doctails"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/HermannDppes/doctails'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4c382121bcec8d7b0a37449d13b383eb1743032d
[INFO] sha for GitHub repo HermannDppes/doctails: 4c382121bcec8d7b0a37449d13b383eb1743032d
[INFO] validating manifest of HermannDppes/doctails on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of HermannDppes/doctails on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing HermannDppes/doctails
[INFO] finished frobbing HermannDppes/doctails
[INFO] frobbed toml for HermannDppes/doctails written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/HermannDppes/doctails/Cargo.toml
[INFO] started frobbing HermannDppes/doctails
[INFO] finished frobbing HermannDppes/doctails
[INFO] frobbed toml for HermannDppes/doctails written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/HermannDppes/doctails/Cargo.toml
[INFO] crate HermannDppes/doctails already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking HermannDppes/doctails against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/HermannDppes/doctails:/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=forbid" "-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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] cc439a8cd35959b71f5b053e698f72b29282c7f50607f6508458ee4f5644670e
[INFO] running `"docker" "start" "-a" "cc439a8cd35959b71f5b053e698f72b29282c7f50607f6508458ee4f5644670e"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.16
[INFO] [stderr]     Checking half v1.1.2
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking serde_cbor v0.9.0
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling serde_derive v1.0.76
[INFO] [stderr]     Checking doctails v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ui.rs:16:48
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn put_pack(pack: &Pack) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ui.rs:22:39
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn get_pack() -> Result<Pack, Box<Error>> {
[INFO] [stderr]    |                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ui.rs:16:48
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn put_pack(pack: &Pack) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ui.rs:22:39
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn get_pack() -> Result<Pack, Box<Error>> {
[INFO] [stderr]    |                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.45s
[INFO] running `"docker" "inspect" "cc439a8cd35959b71f5b053e698f72b29282c7f50607f6508458ee4f5644670e"`
[INFO] running `"docker" "rm" "-f" "cc439a8cd35959b71f5b053e698f72b29282c7f50607f6508458ee4f5644670e"`
[INFO] [stdout] cc439a8cd35959b71f5b053e698f72b29282c7f50607f6508458ee4f5644670e