[INFO] fetching crate taikai 0.1.0...
[INFO] checking taikai-0.1.0 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] extracting crate taikai 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate taikai 0.1.0 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate taikai 0.1.0
[INFO] finished tweaking crates.io crate taikai 0.1.0
[INFO] tweaked toml for crates.io crate taikai 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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
[INFO] [stderr]      Locking 44 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.21.0 (latest: v0.23.0)
[INFO] [stderr]       Adding gimli v0.28.1 (latest: v0.30.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.5)
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.7.11 (latest: v0.13.0)
[INFO] [stderr]       Adding nom v4.2.3 (latest: v7.1.3)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.36.0)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.84)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.36)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (latest: v0.9.34+deprecated)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.66)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.66)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding tuple_utils v0.3.0 (latest: v0.4.0)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] [stderr]       Adding version_check v0.1.5 (latest: v0.9.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tuple_utils v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00dd6582b71fba561474c7fc1cae484de3d062d16031887831b3bbf0ab8ac95f
[INFO] running `Command { std: "docker" "start" "-a" "00dd6582b71fba561474c7fc1cae484de3d062d16031887831b3bbf0ab8ac95f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00dd6582b71fba561474c7fc1cae484de3d062d16031887831b3bbf0ab8ac95f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00dd6582b71fba561474c7fc1cae484de3d062d16031887831b3bbf0ab8ac95f", kill_on_drop: false }`
[INFO] [stdout] 00dd6582b71fba561474c7fc1cae484de3d062d16031887831b3bbf0ab8ac95f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d9e388727d628dced77ade33bebe303eb405cfae858860e44b63e0bf4e593ee
[INFO] running `Command { std: "docker" "start" "-a" "2d9e388727d628dced77ade33bebe303eb405cfae858860e44b63e0bf4e593ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.84
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling cc v1.0.98
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking miniz_oxide v0.7.3
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking either v1.12.0
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking encoding_rs v0.8.34
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]    Compiling backtrace v0.3.71
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking tuple_utils v0.3.0
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]    Compiling serde_derive v1.0.203
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]    Compiling taikai v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(custom_attribute)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(custom_attribute)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(custom_attribute)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `taikai` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `taikai` (lib) due to 2 previous errors
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `taikai` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2d9e388727d628dced77ade33bebe303eb405cfae858860e44b63e0bf4e593ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d9e388727d628dced77ade33bebe303eb405cfae858860e44b63e0bf4e593ee", kill_on_drop: false }`
[INFO] [stdout] 2d9e388727d628dced77ade33bebe303eb405cfae858860e44b63e0bf4e593ee
[INFO] checking taikai-0.1.0 against try#dae34b759e282c069aa28752564694effd121a63 for pr-125384
[INFO] extracting crate taikai 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate taikai 0.1.0 on toolchain dae34b759e282c069aa28752564694effd121a63
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate taikai 0.1.0
[INFO] finished tweaking crates.io crate taikai 0.1.0
[INFO] tweaked toml for crates.io crate taikai 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 44 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.21.0 (latest: v0.23.0)
[INFO] [stderr]       Adding gimli v0.28.1 (latest: v0.30.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.5)
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.7.11 (latest: v0.13.0)
[INFO] [stderr]       Adding nom v4.2.3 (latest: v7.1.3)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.36.0)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.84)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.36)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (latest: v0.9.34+deprecated)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.66)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.66)
[INFO] [stderr]       Adding synstructure v0.12.6 (latest: v0.13.1)
[INFO] [stderr]       Adding tuple_utils v0.3.0 (latest: v0.4.0)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] [stderr]       Adding version_check v0.1.5 (latest: v0.9.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f71700625ea714dba86daa0ceb3cdacd0dbdd9bf4de69ea1d2c8f5278ea86274
[INFO] running `Command { std: "docker" "start" "-a" "f71700625ea714dba86daa0ceb3cdacd0dbdd9bf4de69ea1d2c8f5278ea86274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f71700625ea714dba86daa0ceb3cdacd0dbdd9bf4de69ea1d2c8f5278ea86274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f71700625ea714dba86daa0ceb3cdacd0dbdd9bf4de69ea1d2c8f5278ea86274", kill_on_drop: false }`
[INFO] [stdout] f71700625ea714dba86daa0ceb3cdacd0dbdd9bf4de69ea1d2c8f5278ea86274
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1095efe868ea934855b051d2c4b08e4321806bad419a852268f892ac645d4b2d
[INFO] running `Command { std: "docker" "start" "-a" "1095efe868ea934855b051d2c4b08e4321806bad419a852268f892ac645d4b2d", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "1095efe868ea934855b051d2c4b08e4321806bad419a852268f892ac645d4b2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1095efe868ea934855b051d2c4b08e4321806bad419a852268f892ac645d4b2d", kill_on_drop: false }`
[INFO] [stdout] 1095efe868ea934855b051d2c4b08e4321806bad419a852268f892ac645d4b2d