[INFO] cloning repository https://github.com/comprakt/comprakt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/comprakt/comprakt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomprakt%2Fcomprakt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomprakt%2Fcomprakt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2315e85972e63ea327c4d115ffe623253b520440
[INFO] checking comprakt/comprakt against master#1ca8b71cff69b0c48e40ceb66d01b9f8d30b2492 for pr-118553-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomprakt%2Fcomprakt" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comprakt/comprakt on toolchain 1ca8b71cff69b0c48e40ceb66d01b9f8d30b2492
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ca8b71cff69b0c48e40ceb66d01b9f8d30b2492" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc1/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/comprakt/comprakt
[INFO] finished tweaking git repo https://github.com/comprakt/comprakt
[INFO] tweaked toml for git repo https://github.com/comprakt/comprakt written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/comprakt/comprakt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ca8b71cff69b0c48e40ceb66d01b9f8d30b2492" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-5-tc1/source/compiler-cli/Cargo.toml: the cargo feature `default-run` has been stabilized in the 1.37 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-default-run-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking comprakt/comprakt against try#a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33 for pr-118553-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomprakt%2Fcomprakt" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comprakt/comprakt on toolchain a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/comprakt/comprakt
[INFO] finished tweaking git repo https://github.com/comprakt/comprakt
[INFO] tweaked toml for git repo https://github.com/comprakt/comprakt written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/comprakt/comprakt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-5-tc2/source/compiler-cli/Cargo.toml: the cargo feature `default-run` has been stabilized in the 1.37 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-default-run-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking comprakt/comprakt against try#a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33 for pr-118553-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomprakt%2Fcomprakt" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comprakt/comprakt on toolchain a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/comprakt/comprakt
[INFO] finished tweaking git repo https://github.com/comprakt/comprakt
[INFO] tweaked toml for git repo https://github.com/comprakt/comprakt written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/comprakt/comprakt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-5-tc2/source/compiler-cli/Cargo.toml: the cargo feature `default-run` has been stabilized in the 1.37 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-default-run-field for more information about using this feature.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wait-timeout v0.1.5
[INFO] [stderr]   Downloaded rocket_contrib v0.4.0
[INFO] [stderr]   Downloaded bit-vec v0.5.0
[INFO] [stderr]   Downloaded const-cstr-fork v0.2.2
[INFO] [stderr]   Downloaded strum_macros v0.12.0
[INFO] [stderr]   Downloaded strum v0.11.0
[INFO] [stderr]   Downloaded criterion-plot v0.2.5
[INFO] [stderr]   Downloaded handlebars v0.32.4
[INFO] [stderr]   Downloaded serde v1.0.82
[INFO] [stderr]   Downloaded yaml-rust v0.4.2
[INFO] [stderr]   Downloaded rocket v0.4.0
[INFO] [stderr]   Downloaded backtrace-sys v0.1.26
[INFO] [stderr]   Downloaded heck v0.3.0
[INFO] [stderr]   Downloaded criterion v0.2.5
[INFO] [stderr]   Downloaded rocket_codegen v0.4.0
[INFO] [stderr]   Downloaded rocket_http v0.4.0
[INFO] [stderr]   Downloaded cc v1.0.27
[INFO] [stderr]   Downloaded simplelog v0.5.3
[INFO] [stderr]   Downloaded gcollections v1.4.0
[INFO] [stderr]   Downloaded indexmap v0.4.1
[INFO] [stderr]   Downloaded streaming-stats v0.2.2
[INFO] [stderr]   Downloaded criterion-stats v0.2.5
[INFO] [stderr]   Downloaded priority-queue v0.5.2
[INFO] [stderr]   Downloaded levenshtein v1.0.3
[INFO] [stderr]   Downloaded strum_macros v0.11.0
[INFO] [stderr]   Downloaded trilean v1.0.1
[INFO] [stderr]   Downloaded serde_derive v1.0.82
[INFO] [stderr]   Downloaded libc-extra v0.3.2
[INFO] [stderr]   Downloaded cexpr v0.3.3
[INFO] [stderr]   Downloaded intervallum v1.3.0
[INFO] [stderr]   Downloaded clang-sys v0.26.3
[INFO] [stderr]   Downloaded bindgen v0.42.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 278995abdf8eccf66655c6486bdf7547f2e929da25421aa46aa3ec777c27004e
[INFO] running `Command { std: "docker" "start" "-a" "278995abdf8eccf66655c6486bdf7547f2e929da25421aa46aa3ec777c27004e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "278995abdf8eccf66655c6486bdf7547f2e929da25421aa46aa3ec777c27004e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "278995abdf8eccf66655c6486bdf7547f2e929da25421aa46aa3ec777c27004e", kill_on_drop: false }`
[INFO] [stdout] 278995abdf8eccf66655c6486bdf7547f2e929da25421aa46aa3ec777c27004e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+a1ab9307c2d2e67595eb3bb22fd707ccd1f71e33" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 052231b1a2017100134fd49db9c191f609c93ec456602badcf736517c3d7b26d
[INFO] running `Command { std: "docker" "start" "-a" "052231b1a2017100134fd49db9c191f609c93ec456602badcf736517c3d7b26d", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/compiler-cli/Cargo.toml: the cargo feature `default-run` has been stabilized in the 1.37 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-default-run-field for more information about using this feature.
[INFO] [stderr] warning: compiler-cli v0.0.1 (/opt/rustwide/workdir/compiler-cli) ignoring invalid dependency `inspect-ast` which is missing a lib target
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling cc v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]     Checking rustc-demangle v0.1.11
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.26
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling clang-sys v0.26.3
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.3.5
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking strum v0.11.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling bindgen v0.42.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling yansi v0.4.0
[INFO] [stderr]     Checking levenshtein v1.0.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]     Checking serde_json v1.0.33
[INFO] [stderr]    Compiling cexpr v0.3.3
[INFO] [stderr]    Compiling pear_codegen v0.1.2
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]     Checking smallvec v0.6.7
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking time v0.1.41
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling inflections v1.1.1
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling strum_macros v0.11.0
[INFO] [stderr]    Compiling derive_more v0.13.0
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking asciifile v0.1.0 (/opt/rustwide/workdir/asciifile)
[INFO] [stdout] error[E0425]: cannot find value `tail` in this scope
[INFO] [stdout]    --> asciifile/src/span.rs:198:20
[INFO] [stdout]     |
[INFO] [stdout] 198 |             [head, tail..] => {
[INFO] [stdout]     |                    ^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to collect the rest of the slice in `tail`, use the at operator
[INFO] [stdout]     |
[INFO] [stdout] 198 |             [head, tail @ ..] => {
[INFO] [stdout]     |                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `tail` in this scope
[INFO] [stdout]    --> asciifile/src/span.rs:200:33
[INFO] [stdout]     |
[INFO] [stdout] 200 |                 for position in tail {
[INFO] [stdout]     |                                 ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `X..` patterns in slices are experimental
[INFO] [stdout]    --> asciifile/src/span.rs:198:20
[INFO] [stdout]     |
[INFO] [stdout] 198 |             [head, tail..] => {
[INFO] [stdout]     |                    ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #67264 <https://github.com/rust-lang/rust/issues/67264> for more information
[INFO] [stdout]     = help: add `#![feature(half_open_range_patterns_in_slices)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> asciifile/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `asciifile` (lib) due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "052231b1a2017100134fd49db9c191f609c93ec456602badcf736517c3d7b26d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "052231b1a2017100134fd49db9c191f609c93ec456602badcf736517c3d7b26d", kill_on_drop: false }`
[INFO] [stdout] 052231b1a2017100134fd49db9c191f609c93ec456602badcf736517c3d7b26d