[INFO] cloning repository https://github.com/ChrisDavison/t
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ChrisDavison/t" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChrisDavison%2Ft", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChrisDavison%2Ft'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d719db9e28b792703f611a5ffbd15b2e8165245
[INFO] testing ChrisDavison/t against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChrisDavison%2Ft" "/workspace/builds/worker-82/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-82/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ChrisDavison/t on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ChrisDavison/t
[INFO] finished tweaking git repo https://github.com/ChrisDavison/t
[INFO] tweaked toml for git repo https://github.com/ChrisDavison/t written to /workspace/builds/worker-82/source/Cargo.toml
[INFO] crate git repo https://github.com/ChrisDavison/t already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9693e32bbbf222bc89e4fd524adc452710a629a5052bd8b6fe149846535b4ad7
[INFO] running `Command { std: "docker" "start" "-a" "9693e32bbbf222bc89e4fd524adc452710a629a5052bd8b6fe149846535b4ad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9693e32bbbf222bc89e4fd524adc452710a629a5052bd8b6fe149846535b4ad7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9693e32bbbf222bc89e4fd524adc452710a629a5052bd8b6fe149846535b4ad7", kill_on_drop: false }`
[INFO] [stdout] 9693e32bbbf222bc89e4fd524adc452710a629a5052bd8b6fe149846535b4ad7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-82/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22a924be67bb778b97d8e7d03bbcc2883e68e97a055cc2450060158f730e5d65
[INFO] running `Command { std: "docker" "start" "-a" "22a924be67bb778b97d8e7d03bbcc2883e68e97a055cc2450060158f730e5d65", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling t v0.53.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature 'iter_intersperse': recently added
[INFO] [stdout]   --> src/utility.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 |         .intersperse(String::from("\n"))
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #79524 <https://github.com/rust-lang/rust/issues/79524> for more information
[INFO] [stdout]    = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'iter_intersperse': recently added
[INFO] [stdout]    --> src/utility.rs:107:10
[INFO] [stdout]     |
[INFO] [stdout] 107 |         .intersperse(String::from(" "))
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #79524 <https://github.com/rust-lang/rust/issues/79524> for more information
[INFO] [stdout]     = help: add `#![feature(iter_intersperse)]` to the crate attributes to enable
[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 E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `t` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "22a924be67bb778b97d8e7d03bbcc2883e68e97a055cc2450060158f730e5d65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22a924be67bb778b97d8e7d03bbcc2883e68e97a055cc2450060158f730e5d65", kill_on_drop: false }`
[INFO] [stdout] 22a924be67bb778b97d8e7d03bbcc2883e68e97a055cc2450060158f730e5d65