[INFO] fetching crate tree-index 0.6.1...
[INFO] checking tree-index-0.6.1 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate tree-index 0.6.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate tree-index 0.6.1 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cfef458b1812b5447707f8ae1ce75ac80df7110b09fc9832021868e80e2d522
[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" "2cfef458b1812b5447707f8ae1ce75ac80df7110b09fc9832021868e80e2d522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cfef458b1812b5447707f8ae1ce75ac80df7110b09fc9832021868e80e2d522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cfef458b1812b5447707f8ae1ce75ac80df7110b09fc9832021868e80e2d522", kill_on_drop: false }`
[INFO] [stdout] 2cfef458b1812b5447707f8ae1ce75ac80df7110b09fc9832021868e80e2d522
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 811f1ebf680cdf7f2d13a51c1795478a89f641ab870302ef98564b9dc2ed6687
[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" "811f1ebf680cdf7f2d13a51c1795478a89f641ab870302ef98564b9dc2ed6687", 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] 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: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tree-index`
[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: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "811f1ebf680cdf7f2d13a51c1795478a89f641ab870302ef98564b9dc2ed6687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "811f1ebf680cdf7f2d13a51c1795478a89f641ab870302ef98564b9dc2ed6687", kill_on_drop: false }`
[INFO] [stdout] 811f1ebf680cdf7f2d13a51c1795478a89f641ab870302ef98564b9dc2ed6687