[INFO] cloning repository https://github.com/gifnksm/man-sysnopsis-tools
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gifnksm/man-sysnopsis-tools" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgifnksm%2Fman-sysnopsis-tools", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgifnksm%2Fman-sysnopsis-tools'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c7227b7b6f20785eef1c0bb97a8c224fb0e1cee
[INFO] checking gifnksm/man-sysnopsis-tools against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgifnksm%2Fman-sysnopsis-tools" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gifnksm/man-sysnopsis-tools on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gifnksm/man-sysnopsis-tools
[INFO] finished tweaking git repo https://github.com/gifnksm/man-sysnopsis-tools
[INFO] tweaked toml for git repo https://github.com/gifnksm/man-sysnopsis-tools written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gifnksm/man-sysnopsis-tools 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "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] [stderr]     Blocking waiting for file lock on package cache
[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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] acb9d3830c6b4171d3c40ed7e00c06d6572fe162c47c0a3b264df2bebde15393
[INFO] running `Command { std: "docker" "start" "-a" "acb9d3830c6b4171d3c40ed7e00c06d6572fe162c47c0a3b264df2bebde15393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "acb9d3830c6b4171d3c40ed7e00c06d6572fe162c47c0a3b264df2bebde15393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acb9d3830c6b4171d3c40ed7e00c06d6572fe162c47c0a3b264df2bebde15393", kill_on_drop: false }`
[INFO] [stdout] acb9d3830c6b4171d3c40ed7e00c06d6572fe162c47c0a3b264df2bebde15393
[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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49c274fe6253f88d32bf8ab94a47a60096ec895bba956f0d90329f0f96856d7e
[INFO] running `Command { std: "docker" "start" "-a" "49c274fe6253f88d32bf8ab94a47a60096ec895bba956f0d90329f0f96856d7e", kill_on_drop: false }`
[INFO] [stderr]     Checking synop v0.0.1 (/opt/rustwide/workdir/deps/synop)
[INFO] [stderr]     Checking cmdutil v0.0.1 (/opt/rustwide/workdir/deps/cmdutil)
[INFO] [stdout] error[E0635]: unknown feature `io`
[INFO] [stdout]  --> deps/synop/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(io)]
[INFO] [stdout]   |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `chars` found for struct `BufReader` in the current scope
[INFO] [stdout]  --> deps/synop/src/util.rs:9:37
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let cs = BufReader::new(reader).chars().map(|c| c.unwrap());
[INFO] [stdout]   |                                     ^^^^^ method not found in `BufReader<R>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `synop` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "49c274fe6253f88d32bf8ab94a47a60096ec895bba956f0d90329f0f96856d7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49c274fe6253f88d32bf8ab94a47a60096ec895bba956f0d90329f0f96856d7e", kill_on_drop: false }`
[INFO] [stdout] 49c274fe6253f88d32bf8ab94a47a60096ec895bba956f0d90329f0f96856d7e