[INFO] fetching crate tree-index 0.6.1...
[INFO] checking tree-index-0.6.1 against master#7dc9ff5c629753b6930ecfe9a0446538b8e25fb7 for pr-85387
[INFO] extracting crate tree-index 0.6.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tree-index 0.6.1 on toolchain 7dc9ff5c629753b6930ecfe9a0446538b8e25fb7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tree-index 0.6.1
[INFO] finished tweaking crates.io crate tree-index 0.6.1
[INFO] tweaked toml for crates.io crate tree-index 0.6.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memory-pager v0.9.0
[INFO] [stderr]   Downloaded flat-tree v5.0.0
[INFO] [stderr]   Downloaded sparse-bitfield v0.11.0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb846669237b71e15992acce5cc8edb22711339df30d3ea3e94e5eabbc3f284c
[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" "fb846669237b71e15992acce5cc8edb22711339df30d3ea3e94e5eabbc3f284c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb846669237b71e15992acce5cc8edb22711339df30d3ea3e94e5eabbc3f284c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb846669237b71e15992acce5cc8edb22711339df30d3ea3e94e5eabbc3f284c", kill_on_drop: false }`
[INFO] [stdout] fb846669237b71e15992acce5cc8edb22711339df30d3ea3e94e5eabbc3f284c
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b9e998f7fba7566e5438852457240581847a368474766bd24a6797ed3ca4c93e
[INFO] running `Command { std: "docker" "start" "-a" "b9e998f7fba7566e5438852457240581847a368474766bd24a6797ed3ca4c93e", kill_on_drop: false }`
[INFO] [stderr]     Checking memory-pager v0.9.0
[INFO] [stderr]     Checking flat-tree v5.0.0
[INFO] [stderr]     Checking sparse-bitfield v0.11.0
[INFO] [stderr]     Checking tree-index v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:331:17
[INFO] [stdout]     |
[INFO] [stdout] 331 |       _ => panic!(format!(
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 332 | |       "Bitshift failure. Received bit {}. Expected 1 or 0",
[INFO] [stdout] 333 | |       n
[INFO] [stdout] 334 | |     )),
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 331 |     _ => panic!(
[INFO] [stdout] 332 |       "Bitshift failure. Received bit {}. Expected 1 or 0",
[INFO] [stdout] 333 |       n
[INFO] [stdout] 334 |     ),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:331:17
[INFO] [stdout]     |
[INFO] [stdout] 331 |       _ => panic!(format!(
[INFO] [stdout]     |  _________________^
[INFO] [stdout] 332 | |       "Bitshift failure. Received bit {}. Expected 1 or 0",
[INFO] [stdout] 333 | |       n
[INFO] [stdout] 334 | |     )),
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:2:24
[INFO] [stdout]     |
[INFO] [stdout] 2   | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(non_fmt_panic)]` implied by `#[deny(warnings)]`
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 331 |     _ => panic!(
[INFO] [stdout] 332 |       "Bitshift failure. Received bit {}. Expected 1 or 0",
[INFO] [stdout] 333 |       n
[INFO] [stdout] 334 |     ),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tree-index`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b9e998f7fba7566e5438852457240581847a368474766bd24a6797ed3ca4c93e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9e998f7fba7566e5438852457240581847a368474766bd24a6797ed3ca4c93e", kill_on_drop: false }`
[INFO] [stdout] b9e998f7fba7566e5438852457240581847a368474766bd24a6797ed3ca4c93e