[INFO] cloning repository https://github.com/ColinFendrick/rust-todo-cli
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ColinFendrick/rust-todo-cli" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FColinFendrick%2Frust-todo-cli", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FColinFendrick%2Frust-todo-cli'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d017edafdb84a4f61b5e32d50a96de288e9bf8a9
[INFO] testing ColinFendrick/rust-todo-cli against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FColinFendrick%2Frust-todo-cli" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ColinFendrick/rust-todo-cli on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ColinFendrick/rust-todo-cli
[INFO] finished tweaking git repo https://github.com/ColinFendrick/rust-todo-cli
[INFO] tweaked toml for git repo https://github.com/ColinFendrick/rust-todo-cli written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ColinFendrick/rust-todo-cli already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21c032c4d1035316c2ec4cc6baeea0bea2bfda486c46d55ee430e730458873d1
[INFO] running `Command { std: "docker" "start" "-a" "21c032c4d1035316c2ec4cc6baeea0bea2bfda486c46d55ee430e730458873d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21c032c4d1035316c2ec4cc6baeea0bea2bfda486c46d55ee430e730458873d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21c032c4d1035316c2ec4cc6baeea0bea2bfda486c46d55ee430e730458873d1", kill_on_drop: false }`
[INFO] [stdout] 21c032c4d1035316c2ec4cc6baeea0bea2bfda486c46d55ee430e730458873d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41a616f3775492d9842aa2d5b80e60dd600286bba17194529a154e1083aaed78
[INFO] running `Command { std: "docker" "start" "-a" "41a616f3775492d9842aa2d5b80e60dd600286bba17194529a154e1083aaed78", kill_on_drop: false }`
[INFO] [stderr]    Compiling todo-cli v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `read_to_string` found for struct `File` in the current scope
[INFO] [stdout]    --> src/main.rs:57:11
[INFO] [stdout]     |
[INFO] [stdout] 57  |         f.read_to_string(&mut content)?;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^ method not found in `File`
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::io::Read;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `todo-cli`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "41a616f3775492d9842aa2d5b80e60dd600286bba17194529a154e1083aaed78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41a616f3775492d9842aa2d5b80e60dd600286bba17194529a154e1083aaed78", kill_on_drop: false }`
[INFO] [stdout] 41a616f3775492d9842aa2d5b80e60dd600286bba17194529a154e1083aaed78