[INFO] updating cached repository https://github.com/rust-lang-nursery/rustfmt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] [stderr] From https://github.com/rust-lang-nursery/rustfmt
[INFO] [stderr]    8fb4fa53..bd51e8e6  master     -> master
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd51e8e6d0891321f58958dd2734e60ca6d95064
[INFO] documenting rust-lang-nursery/rustfmt against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-lang-nursery%2Frustfmt" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rust-lang-nursery/rustfmt on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rust-lang-nursery/rustfmt
[INFO] removed path dependency rustfmt-config_proc_macro from git repo https://github.com/rust-lang-nursery/rustfmt
[INFO] finished tweaking git repo https://github.com/rust-lang-nursery/rustfmt
[INFO] tweaked toml for git repo https://github.com/rust-lang-nursery/rustfmt written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/rust-lang-nursery/rustfmt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v667.0.0
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[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v667.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v667.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v667.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v667.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_expand v667.0.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90cae3925934fc83bf615f01b28fd7fede34df28236aafb9d94cbdfee57e2876
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "90cae3925934fc83bf615f01b28fd7fede34df28236aafb9d94cbdfee57e2876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90cae3925934fc83bf615f01b28fd7fede34df28236aafb9d94cbdfee57e2876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90cae3925934fc83bf615f01b28fd7fede34df28236aafb9d94cbdfee57e2876", kill_on_drop: false }`
[INFO] [stdout] 90cae3925934fc83bf615f01b28fd7fede34df28236aafb9d94cbdfee57e2876
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72867b96a9965165f3450a4621b6fd8f233e2b831cb10b5e380d3dc41f83dbf4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "72867b96a9965165f3450a4621b6fd8f233e2b831cb10b5e380d3dc41f83dbf4", 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]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling rustc-rayon-core v0.3.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v667.0.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling rustc-ap-rustc_target v667.0.0
[INFO] [stderr]    Compiling rustc-ap-rustc_ast v667.0.0
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]     Checking yansi-term v0.1.2
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v667.0.0
[INFO] [stderr]     Checking tinyvec v0.3.3
[INFO] [stderr]    Compiling rustc-ap-rustc_attr v667.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking version_check v0.9.2
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling rustfmt-nightly v2.0.0-rc.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking dunce v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking lock_api v0.3.4
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[INFO] [stderr]     Checking getopts v0.2.21
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[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v667.0.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking annotate-snippets v0.8.0
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[INFO] [stderr]     Checking unicode-normalization v0.1.13
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]     Checking rustc-ap-rustc_serialize v667.0.0
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking ena v0.14.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking num_cpus v1.13.0
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[INFO] [stderr]     Checking termize v0.1.1
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]     Checking rustc-ap-rustc_index v667.0.0
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking measureme v0.7.1
[INFO] [stderr]     Checking rustc-rayon v0.3.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking globset v0.4.5
[INFO] [stderr]     Checking ignore v0.4.16
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v667.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_arena v667.0.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v667.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling rustfmt-config_proc_macro v0.5.1
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking rustc-ap-rustc_span v667.0.0
[INFO] [stdout] error[E0658]: `if` is not allowed in a `const fn`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-667.0.0/def_id.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / rustc_index::newtype_index! {
[INFO] [stdout] 12 | |     pub struct CrateId {
[INFO] [stdout] 13 | |         ENCODABLE = custom
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #49146 <https://github.com/rust-lang/rust/issues/49146> for more information
[INFO] [stdout]    = help: add `#![feature(const_if_match)]` to the crate attributes to enable
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `if` is not allowed in a `const fn`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-667.0.0/def_id.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | / rustc_index::newtype_index! {
[INFO] [stdout] 12 | |     pub struct CrateId {
[INFO] [stdout] 13 | |         ENCODABLE = custom
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #49146 <https://github.com/rust-lang/rust/issues/49146> for more information
[INFO] [stdout]    = help: add `#![feature(const_if_match)]` to the crate attributes to enable
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `if` is not allowed in a `const fn`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-667.0.0/def_id.rs:118:1
[INFO] [stdout]     |
[INFO] [stdout] 118 | / rustc_index::newtype_index! {
[INFO] [stdout] 119 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stdout] 120 | |     /// particular definition. It should really be considered an interned
[INFO] [stdout] 121 | |     /// shorthand for a particular DefPath.
[INFO] [stdout] ...   |
[INFO] [stdout] 128 | |     }
[INFO] [stdout] 129 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #49146 <https://github.com/rust-lang/rust/issues/49146> for more information
[INFO] [stdout]     = help: add `#![feature(const_if_match)]` to the crate attributes to enable
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `if` is not allowed in a `const fn`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-667.0.0/def_id.rs:118:1
[INFO] [stdout]     |
[INFO] [stdout] 118 | / rustc_index::newtype_index! {
[INFO] [stdout] 119 | |     /// A DefIndex is an index into the hir-map for a crate, identifying a
[INFO] [stdout] 120 | |     /// particular definition. It should really be considered an interned
[INFO] [stdout] 121 | |     /// shorthand for a particular DefPath.
[INFO] [stdout] ...   |
[INFO] [stdout] 128 | |     }
[INFO] [stdout] 129 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #49146 <https://github.com/rust-lang/rust/issues/49146> for more information
[INFO] [stdout]     = help: add `#![feature(const_if_match)]` to the crate attributes to enable
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `if` is not allowed in a `const fn`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-667.0.0/symbol.rs:1062:1
[INFO] [stdout]      |
[INFO] [stdout] 1062 | / rustc_index::newtype_index! {
[INFO] [stdout] 1063 | |     pub struct SymbolIndex { .. }
[INFO] [stdout] 1064 | | }
[INFO] [stdout]      | |_^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #49146 <https://github.com/rust-lang/rust/issues/49146> for more information
[INFO] [stdout]      = help: add `#![feature(const_if_match)]` to the crate attributes to enable
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `if` is not allowed in a `const fn`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_span-667.0.0/symbol.rs:1062:1
[INFO] [stdout]      |
[INFO] [stdout] 1062 | / rustc_index::newtype_index! {
[INFO] [stdout] 1063 | |     pub struct SymbolIndex { .. }
[INFO] [stdout] 1064 | | }
[INFO] [stdout]      | |_^
[INFO] [stdout]      |
[INFO] [stdout]      = note: see issue #49146 <https://github.com/rust-lang/rust/issues/49146> for more information
[INFO] [stdout]      = help: add `#![feature(const_if_match)]` to the crate attributes to enable
[INFO] [stdout]      = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_span`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "72867b96a9965165f3450a4621b6fd8f233e2b831cb10b5e380d3dc41f83dbf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72867b96a9965165f3450a4621b6fd8f233e2b831cb10b5e380d3dc41f83dbf4", kill_on_drop: false }`
[INFO] [stdout] 72867b96a9965165f3450a4621b6fd8f233e2b831cb10b5e380d3dc41f83dbf4