[INFO] cloning repository https://github.com/brb/coolc-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brb/coolc-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrb%2Fcoolc-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrb%2Fcoolc-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b0819957478e39ece69cc82c68f298869cef9de4
[INFO] checking brb/coolc-rs against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrb%2Fcoolc-rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brb/coolc-rs on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brb/coolc-rs
[INFO] finished tweaking git repo https://github.com/brb/coolc-rs
[INFO] tweaked toml for git repo https://github.com/brb/coolc-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/brb/coolc-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 320da7005b14987352e69b87605eb9f51d33896db15ad56d284a122ace497fe7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "320da7005b14987352e69b87605eb9f51d33896db15ad56d284a122ace497fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "320da7005b14987352e69b87605eb9f51d33896db15ad56d284a122ace497fe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "320da7005b14987352e69b87605eb9f51d33896db15ad56d284a122ace497fe7", kill_on_drop: false }`
[INFO] [stdout] 320da7005b14987352e69b87605eb9f51d33896db15ad56d284a122ace497fe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18c1b9a321e5d0aeaf98b831634c4b0563b374053314d48e5ab8c5f3cc58a38c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "18c1b9a321e5d0aeaf98b831634c4b0563b374053314d48e5ab8c5f3cc58a38c", kill_on_drop: false }`
[INFO] [stderr]     Checking coolc-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::io::Chars`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^ no `Chars` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `std::io::Chars`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Chars;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^ no `Chars` in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:116:20
[INFO] [stdout]     |
[INFO] [stdout] 116 |         while self.is_digit() {
[INFO] [stdout]     |                    ^^^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:116:20
[INFO] [stdout]     |
[INFO] [stdout] 116 |         while self.is_digit() {
[INFO] [stdout]     |                    ^^^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:125:20
[INFO] [stdout]     |
[INFO] [stdout] 125 |         while self.is_digit() || self.is_letter() {
[INFO] [stdout]     |                    ^^^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:125:20
[INFO] [stdout]     |
[INFO] [stdout] 125 |         while self.is_digit() || self.is_letter() {
[INFO] [stdout]     |                    ^^^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:186:26
[INFO] [stdout]     |
[INFO] [stdout] 186 |             else if self.is_eof() {
[INFO] [stdout]     |                          ^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:186:26
[INFO] [stdout]     |
[INFO] [stdout] 186 |             else if self.is_eof() {
[INFO] [stdout]     |                          ^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:202:26
[INFO] [stdout]     |
[INFO] [stdout] 202 |             else if self.is_eof() {
[INFO] [stdout]     |                          ^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:202:26
[INFO] [stdout]     |
[INFO] [stdout] 202 |             else if self.is_eof() {
[INFO] [stdout]     |                          ^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:219:17
[INFO] [stdout]     |
[INFO] [stdout] 219 |         if self.is_digit() {
[INFO] [stdout]     |                 ^^^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:219:17
[INFO] [stdout]     |
[INFO] [stdout] 219 |         if self.is_digit() {
[INFO] [stdout]     |                 ^^^^^^^^ cannot infer type for type parameter `T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `chars` found for struct `File` in the current scope
[INFO] [stdout]    --> src/main.rs:295:41
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let mut scanner = Scanner::new(file.chars());
[INFO] [stdout]     |                                         ^^^^^ method not found in `File`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `chars` found for struct `File` in the current scope
[INFO] [stdout]    --> src/main.rs:295:41
[INFO] [stdout]     |
[INFO] [stdout] 295 |     let mut scanner = Scanner::new(file.chars());
[INFO] [stdout]     |                                         ^^^^^ method not found in `File`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0282, E0432, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `coolc-rs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "18c1b9a321e5d0aeaf98b831634c4b0563b374053314d48e5ab8c5f3cc58a38c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18c1b9a321e5d0aeaf98b831634c4b0563b374053314d48e5ab8c5f3cc58a38c", kill_on_drop: false }`
[INFO] [stdout] 18c1b9a321e5d0aeaf98b831634c4b0563b374053314d48e5ab8c5f3cc58a38c