[INFO] cloning repository https://github.com/PragmaTwice/ichigo-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PragmaTwice/ichigo-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPragmaTwice%2Fichigo-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPragmaTwice%2Fichigo-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4a0addbef49a9890b9580cab0d90323ba4f849c
[INFO] testing PragmaTwice/ichigo-lang against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPragmaTwice%2Fichigo-lang" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PragmaTwice/ichigo-lang on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PragmaTwice/ichigo-lang
[INFO] finished tweaking git repo https://github.com/PragmaTwice/ichigo-lang
[INFO] tweaked toml for git repo https://github.com/PragmaTwice/ichigo-lang written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/PragmaTwice/ichigo-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded colored v1.9.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1f6ab05d1613b6e8b541bcc5fba3ba0effb98a500c60b523fd47371e73aab95
[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" "f1f6ab05d1613b6e8b541bcc5fba3ba0effb98a500c60b523fd47371e73aab95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1f6ab05d1613b6e8b541bcc5fba3ba0effb98a500c60b523fd47371e73aab95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f6ab05d1613b6e8b541bcc5fba3ba0effb98a500c60b523fd47371e73aab95", kill_on_drop: false }`
[INFO] [stdout] f1f6ab05d1613b6e8b541bcc5fba3ba0effb98a500c60b523fd47371e73aab95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 439d706151fcd5f05be3a4b17868865a8d53a6c9f458a73e4339891ebf647b6a
[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" "439d706151fcd5f05be3a4b17868865a8d53a6c9f458a73e4339891ebf647b6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling proc-macro2 v0.4.28
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling colored v1.9.1
[INFO] [stderr]    Compiling pest_meta v2.1.1
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]    Compiling structopt-derive v0.4.0
[INFO] [stderr]    Compiling structopt v0.3.7
[INFO] [stderr]    Compiling ichigo-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0659]: `read_to_string` is ambiguous
[INFO] [stdout]    --> src/cli/cli.rs:205:15
[INFO] [stdout]     |
[INFO] [stdout] 205 |         match read_to_string(filename) {
[INFO] [stdout]     |               ^^^^^^^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: ambiguous because of multiple glob imports of a name in the same module
[INFO] [stdout] note: `read_to_string` could refer to the function imported here
[INFO] [stdout]    --> src/cli/cli.rs:7:5
[INFO] [stdout]     |
[INFO] [stdout] 7   | use std::fs::*;
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `read_to_string` to disambiguate
[INFO] [stdout] note: `read_to_string` could also refer to the function imported here
[INFO] [stdout]    --> src/cli/cli.rs:8:5
[INFO] [stdout]     |
[INFO] [stdout] 8   | use std::io::*;
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `read_to_string` to disambiguate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0659`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ichigo-lang` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "439d706151fcd5f05be3a4b17868865a8d53a6c9f458a73e4339891ebf647b6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "439d706151fcd5f05be3a4b17868865a8d53a6c9f458a73e4339891ebf647b6a", kill_on_drop: false }`
[INFO] [stdout] 439d706151fcd5f05be3a4b17868865a8d53a6c9f458a73e4339891ebf647b6a