[INFO] cloning repository https://github.com/mchaver/digit-recognition
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mchaver/digit-recognition" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmchaver%2Fdigit-recognition", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmchaver%2Fdigit-recognition'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a605df4d31511e5bde035fff17c55835c0e19e3f
[INFO] checking mchaver/digit-recognition against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmchaver%2Fdigit-recognition" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mchaver/digit-recognition on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mchaver/digit-recognition
[INFO] finished tweaking git repo https://github.com/mchaver/digit-recognition
[INFO] tweaked toml for git repo https://github.com/mchaver/digit-recognition written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/mchaver/digit-recognition already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pear_codegen v0.0.17
[INFO] [stderr]   Downloaded pear v0.0.17
[INFO] [stderr]   Downloaded rocket_codegen v0.3.12
[INFO] [stderr]   Downloaded rocket v0.3.12
[INFO] [stderr]   Downloaded rocket_contrib v0.3.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c851bdb64787ab282ecbb6e07e1e766699b68b69d4234c5cf52917c4112d5d4e
[INFO] running `Command { std: "docker" "start" "-a" "c851bdb64787ab282ecbb6e07e1e766699b68b69d4234c5cf52917c4112d5d4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c851bdb64787ab282ecbb6e07e1e766699b68b69d4234c5cf52917c4112d5d4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c851bdb64787ab282ecbb6e07e1e766699b68b69d4234c5cf52917c4112d5d4e", kill_on_drop: false }`
[INFO] [stdout] c851bdb64787ab282ecbb6e07e1e766699b68b69d4234c5cf52917c4112d5d4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b482c9c45196f460e45d6859cb3667fe60c366d517cff954d51f800de49c7b9f
[INFO] running `Command { std: "docker" "start" "-a" "b482c9c45196f460e45d6859cb3667fe60c366d517cff954d51f800de49c7b9f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling untrusted v0.5.1
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling smallvec v0.6.2
[INFO] [stderr]    Compiling ordermap v0.2.13
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]     Checking pear v0.0.17
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]     Checking inflate v0.4.2
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking log v0.4.2
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling isatty v0.1.8
[INFO] [stderr]    Compiling base64 v0.6.0
[INFO] [stderr]    Compiling base64 v0.9.2
[INFO] [stderr]     Checking idna v0.1.4
[INFO] [stderr]     Checking rand v0.5.1
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]     Checking gif v0.10.0
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling pear_codegen v0.0.17
[INFO] [stderr]    Compiling rocket v0.3.12
[INFO] [stderr]    Compiling rocket_codegen v0.3.12
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]     Checking url v1.7.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.17/src/lib.rs:1:45
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin_registrar, rustc_private, quote)]
[INFO] [stdout]   |                                             ^^^^^ feature has been removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0462]: found staticlib `rustc` instead of rlib or dylib
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pear_codegen-0.0.17/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate rustc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: please recompile that crate using --crate-type lib
[INFO] [stdout]   = note: the following crate versions were found:
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.msan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.lsan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a
[INFO] [stdout]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.tsan.a
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pear_codegen` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0713]: borrow may still be in use when destructor runs
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.7.0/src/form_urlencoded.rs:261:40
[INFO] [stdout]     |
[INFO] [stdout] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stdout]     |      -- lifetime `'a` defined here
[INFO] [stdout] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stdout] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stdout]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stdout]     |                                        |
[INFO] [stdout]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0713`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b482c9c45196f460e45d6859cb3667fe60c366d517cff954d51f800de49c7b9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b482c9c45196f460e45d6859cb3667fe60c366d517cff954d51f800de49c7b9f", kill_on_drop: false }`
[INFO] [stdout] b482c9c45196f460e45d6859cb3667fe60c366d517cff954d51f800de49c7b9f