[INFO] cloning repository https://github.com/reshmi789/immutable_var
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/reshmi789/immutable_var" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freshmi789%2Fimmutable_var", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freshmi789%2Fimmutable_var'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4e4e32a87b0c8afdd2b71f66add5d13c28c5c076
[INFO] checking reshmi789/immutable_var against try#da4929024a7261062885cb3209c9d7fdc919d233 for pr-135536
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Freshmi789%2Fimmutable_var" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/reshmi789/immutable_var on toolchain da4929024a7261062885cb3209c9d7fdc919d233
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da4929024a7261062885cb3209c9d7fdc919d233" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/reshmi789/immutable_var
[INFO] finished tweaking git repo https://github.com/reshmi789/immutable_var
[INFO] tweaked toml for git repo https://github.com/reshmi789/immutable_var written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/reshmi789/immutable_var 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" "+da4929024a7261062885cb3209c9d7fdc919d233" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+da4929024a7261062885cb3209c9d7fdc919d233" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 500668910e132d8a73a62e4316296dd0ea983ca92e575ba43ab5d0bcfbd59189
[INFO] running `Command { std: "docker" "start" "-a" "500668910e132d8a73a62e4316296dd0ea983ca92e575ba43ab5d0bcfbd59189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "500668910e132d8a73a62e4316296dd0ea983ca92e575ba43ab5d0bcfbd59189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "500668910e132d8a73a62e4316296dd0ea983ca92e575ba43ab5d0bcfbd59189", kill_on_drop: false }`
[INFO] [stdout] 500668910e132d8a73a62e4316296dd0ea983ca92e575ba43ab5d0bcfbd59189
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:819108c5571ea2e421544af4d832f968d213c87fbe3707a016657f43d2f853bc" "/opt/rustwide/cargo-home/bin/cargo" "+da4929024a7261062885cb3209c9d7fdc919d233" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 878ed6632169f855e2ef96f3f051e31afc604a632b28611ffbadbfd7cd82dbb5
[INFO] running `Command { std: "docker" "start" "-a" "878ed6632169f855e2ef96f3f051e31afc604a632b28611ffbadbfd7cd82dbb5", kill_on_drop: false }`
[INFO] [stderr]     Checking immutable_var v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: format argument must be a string literal
[INFO] [stdout]  --> src/main.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 |     println!(spaces);
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: you might be missing a string literal to format with
[INFO] [stdout]   |
[INFO] [stdout] 4 |     println!("{}", spaces);
[INFO] [stdout]   |              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: format argument must be a string literal
[INFO] [stdout]  --> src/main.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 |     println!(spaces);
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: you might be missing a string literal to format with
[INFO] [stdout]   |
[INFO] [stdout] 4 |     println!("{}", spaces);
[INFO] [stdout]   |              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/main.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut spaces = "   ";
[INFO] [stdout]   |                      ----- expected due to this value
[INFO] [stdout] 3 |     spaces = spaces.len();
[INFO] [stdout]   |              ^^^^^^^^^^^^ expected `&str`, found `usize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/main.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut spaces = "   ";
[INFO] [stdout]   |                      ----- expected due to this value
[INFO] [stdout] 3 |     spaces = spaces.len();
[INFO] [stdout]   |              ^^^^^^^^^^^^ expected `&str`, found `usize`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `immutable_var` (bin "immutable_var") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `immutable_var` (bin "immutable_var" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "878ed6632169f855e2ef96f3f051e31afc604a632b28611ffbadbfd7cd82dbb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "878ed6632169f855e2ef96f3f051e31afc604a632b28611ffbadbfd7cd82dbb5", kill_on_drop: false }`
[INFO] [stdout] 878ed6632169f855e2ef96f3f051e31afc604a632b28611ffbadbfd7cd82dbb5