[INFO] updating cached repository Patapum/delaystderr
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Patapum/delaystderr
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Patapum/delaystderr" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Patapum/delaystderr"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Patapum/delaystderr'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Patapum/delaystderr" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Patapum/delaystderr"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Patapum/delaystderr'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f92d72c0c18222096e8bd72b03d961b154499efc
[INFO] sha for GitHub repo Patapum/delaystderr: f92d72c0c18222096e8bd72b03d961b154499efc
[INFO] validating manifest of Patapum/delaystderr 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 Patapum/delaystderr 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 Patapum/delaystderr
[INFO] finished frobbing Patapum/delaystderr
[INFO] frobbed toml for Patapum/delaystderr written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/Patapum/delaystderr/Cargo.toml
[INFO] started frobbing Patapum/delaystderr
[INFO] finished frobbing Patapum/delaystderr
[INFO] frobbed toml for Patapum/delaystderr written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Patapum/delaystderr/Cargo.toml
[INFO] crate Patapum/delaystderr 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] checking Patapum/delaystderr against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-7/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/Patapum/delaystderr:/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] a13392242531019d424995a40fea7f13eddeea3e3c7e2afb147a47cf4b07a00f
[INFO] running `"docker" "start" "-a" "a13392242531019d424995a40fea7f13eddeea3e3c7e2afb147a47cf4b07a00f"`
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]     Checking bytes v0.4.7
[INFO] [stderr]     Checking futures-io v0.2.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.3
[INFO] [stderr]     Checking futures-util v0.2.1
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]     Checking tokio-io v0.1.6
[INFO] [stderr]     Checking tokio-fs v0.1.0
[INFO] [stderr]     Checking tokio-reactor v0.1.1
[INFO] [stderr]     Checking mio-uds v0.6.6
[INFO] [stderr]     Checking tokio-udp v0.1.0
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking futures-executor v0.2.1
[INFO] [stderr]     Checking tokio v0.1.6
[INFO] [stderr]     Checking futures-stable v0.2.1
[INFO] [stderr]     Checking futures-async-runtime v0.2.1
[INFO] [stderr]     Checking futures v0.2.1
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-signal v0.1.5
[INFO] [stderr]     Checking tokio-process v0.1.6
[INFO] [stderr]     Checking delaystderr v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `chars` found for type `&mut std::process::ChildStderr` in the current scope
[INFO] [stderr]   --> src/main.rs:26:46
[INFO] [stderr]    |
[INFO] [stderr] 26 |     for char in cmd.stderr.as_mut().unwrap().chars() {
[INFO] [stderr]    |                                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `delaystderr`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0599]: no method named `chars` found for type `&mut std::process::ChildStderr` in the current scope
[INFO] [stderr]   --> src/main.rs:26:46
[INFO] [stderr]    |
[INFO] [stderr] 26 |     for char in cmd.stderr.as_mut().unwrap().chars() {
[INFO] [stderr]    |                                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `delaystderr`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a13392242531019d424995a40fea7f13eddeea3e3c7e2afb147a47cf4b07a00f"`
[INFO] running `"docker" "rm" "-f" "a13392242531019d424995a40fea7f13eddeea3e3c7e2afb147a47cf4b07a00f"`
[INFO] [stdout] a13392242531019d424995a40fea7f13eddeea3e3c7e2afb147a47cf4b07a00f