[INFO] cloning repository https://github.com/tomc1998/rust-lmc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomc1998/rust-lmc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomc1998%2Frust-lmc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomc1998%2Frust-lmc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1827800f48ac1edaac36c7b39df35029b129508a
[INFO] checking tomc1998/rust-lmc against try#e0f03aec47b100bc29555561bd62a99d1bc6aca5 for pr-86231
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomc1998%2Frust-lmc" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomc1998/rust-lmc on toolchain e0f03aec47b100bc29555561bd62a99d1bc6aca5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tomc1998/rust-lmc
[INFO] finished tweaking git repo https://github.com/tomc1998/rust-lmc
[INFO] tweaked toml for git repo https://github.com/tomc1998/rust-lmc written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tomc1998/rust-lmc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "fetch" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bf9d58dc87a9ded54ae66c29f0ad903c114183e203549d2d39898fd514fa136
[INFO] running `Command { std: "docker" "start" "-a" "4bf9d58dc87a9ded54ae66c29f0ad903c114183e203549d2d39898fd514fa136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bf9d58dc87a9ded54ae66c29f0ad903c114183e203549d2d39898fd514fa136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bf9d58dc87a9ded54ae66c29f0ad903c114183e203549d2d39898fd514fa136", kill_on_drop: false }`
[INFO] [stdout] 4bf9d58dc87a9ded54ae66c29f0ad903c114183e203549d2d39898fd514fa136
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+e0f03aec47b100bc29555561bd62a99d1bc6aca5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 894b425dda2ae39e24e5d0904e705359afbbad9a368dec1a5173182b5a53a249
[INFO] running `Command { std: "docker" "start" "-a" "894b425dda2ae39e24e5d0904e705359afbbad9a368dec1a5173182b5a53a249", kill_on_drop: false }`
[INFO] [stderr]     Checking lmc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]  --> src/io.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |   let mut f = try!(File::open(filename));
[INFO] [stdout]   |               ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]  --> src/io.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   try!(f.read_to_string(&mut buffer));
[INFO] [stdout]   |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]   --> src/io.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::io::{self, Read};
[INFO] [stdout]    |               ---- the item `io` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 14 |     use std::io;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]  --> src/io.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 |   let mut f = try!(File::open(filename));
[INFO] [stdout]   |               ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]  --> src/io.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   try!(f.read_to_string(&mut buffer));
[INFO] [stdout]   |   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `io` is imported redundantly
[INFO] [stdout]   --> src/io.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::io::{self, Read};
[INFO] [stdout]    |               ---- the item `io` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 14 |     use std::io;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "894b425dda2ae39e24e5d0904e705359afbbad9a368dec1a5173182b5a53a249", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "894b425dda2ae39e24e5d0904e705359afbbad9a368dec1a5173182b5a53a249", kill_on_drop: false }`
[INFO] [stdout] 894b425dda2ae39e24e5d0904e705359afbbad9a368dec1a5173182b5a53a249