[INFO] fetching crate unicode_names2 1.2.0...
[INFO] checking unicode_names2-1.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate unicode_names2 1.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate unicode_names2 1.2.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unicode_names2 1.2.0
[INFO] finished tweaking crates.io crate unicode_names2 1.2.0
[INFO] tweaked toml for crates.io crate unicode_names2 1.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate unicode_names2 1.2.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded time-core v0.1.0
[INFO] [stderr]   Downloaded unicode_names2_generator v1.2.0
[INFO] [stderr]   Downloaded unicode_names2_macros v1.1.0
[INFO] [stderr]   Downloaded unicode_names2 v1.1.0
[INFO] [stderr]   Downloaded regex v1.0.0
[INFO] [stderr]   Downloaded time v0.3.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 502d563169ab6f6517037793e32d9bce53fca73f6ecb753189ea3426749e1453
[INFO] running `Command { std: "docker" "start" "-a" "502d563169ab6f6517037793e32d9bce53fca73f6ecb753189ea3426749e1453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "502d563169ab6f6517037793e32d9bce53fca73f6ecb753189ea3426749e1453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "502d563169ab6f6517037793e32d9bce53fca73f6ecb753189ea3426749e1453", kill_on_drop: false }`
[INFO] [stdout] 502d563169ab6f6517037793e32d9bce53fca73f6ecb753189ea3426749e1453
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2065c9189c690b94a674a8e38f3f5198894ea9c07c38cb68a1f5d69c278069b2
[INFO] running `Command { std: "docker" "start" "-a" "2065c9189c690b94a674a8e38f3f5198894ea9c07c38cb68a1f5d69c278069b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling time v0.3.20
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking phf_shared v0.11.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]    Compiling unicode_names2_generator v1.2.0
[INFO] [stderr]    Compiling unicode_names2 v1.1.0
[INFO] [stderr]    Compiling unicode_names2 v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling unicode_names2_macros v1.1.0
[INFO] [stdout] warning: the item `char` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:443:9
[INFO] [stdout]     |
[INFO] [stdout] 438 |     use super::*;
[INFO] [stdout]     |         -------- the item `char` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 443 |     use std::char;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.69s
[INFO] running `Command { std: "docker" "inspect" "2065c9189c690b94a674a8e38f3f5198894ea9c07c38cb68a1f5d69c278069b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2065c9189c690b94a674a8e38f3f5198894ea9c07c38cb68a1f5d69c278069b2", kill_on_drop: false }`
[INFO] [stdout] 2065c9189c690b94a674a8e38f3f5198894ea9c07c38cb68a1f5d69c278069b2
[INFO] checking unicode_names2-1.2.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate unicode_names2 1.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate unicode_names2 1.2.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unicode_names2 1.2.0
[INFO] finished tweaking crates.io crate unicode_names2 1.2.0
[INFO] tweaked toml for crates.io crate unicode_names2 1.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate unicode_names2 1.2.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64dd7118ae9092dffe8ec440411ea792c31c731f68fbda00d0f11aa649974931
[INFO] running `Command { std: "docker" "start" "-a" "64dd7118ae9092dffe8ec440411ea792c31c731f68fbda00d0f11aa649974931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64dd7118ae9092dffe8ec440411ea792c31c731f68fbda00d0f11aa649974931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64dd7118ae9092dffe8ec440411ea792c31c731f68fbda00d0f11aa649974931", kill_on_drop: false }`
[INFO] [stdout] 64dd7118ae9092dffe8ec440411ea792c31c731f68fbda00d0f11aa649974931
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] def8cc523aacd760e1adc045f60eebd482b7a1bc68a2fd35ccf459bc7b89b659
[INFO] running `Command { std: "docker" "start" "-a" "def8cc523aacd760e1adc045f60eebd482b7a1bc68a2fd35ccf459bc7b89b659", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling time v0.3.20
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]    Compiling unicode_names2_generator v1.2.0
[INFO] [stderr]    Compiling unicode_names2 v1.1.0
[INFO] [stderr]    Compiling unicode_names2 v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling unicode_names2_macros v1.1.0
[INFO] [stdout] warning: the item `char` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:443:9
[INFO] [stdout]     |
[INFO] [stdout] 438 |     use super::*;
[INFO] [stdout]     |         -------- the item `char` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 443 |     use std::char;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.42s
[INFO] running `Command { std: "docker" "inspect" "def8cc523aacd760e1adc045f60eebd482b7a1bc68a2fd35ccf459bc7b89b659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "def8cc523aacd760e1adc045f60eebd482b7a1bc68a2fd35ccf459bc7b89b659", kill_on_drop: false }`
[INFO] [stdout] def8cc523aacd760e1adc045f60eebd482b7a1bc68a2fd35ccf459bc7b89b659