[INFO] fetching crate commit_artist 1.0.1...
[INFO] checking commit_artist-1.0.1 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate commit_artist 1.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate commit_artist 1.0.1 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 commit_artist 1.0.1
[INFO] finished tweaking crates.io crate commit_artist 1.0.1
[INFO] tweaked toml for crates.io crate commit_artist 1.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate commit_artist 1.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--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" "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] d728271be240d660ef8f50330f4c1ea8dacb12983571e1a0d0a5140ab18de09b
[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" "d728271be240d660ef8f50330f4c1ea8dacb12983571e1a0d0a5140ab18de09b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d728271be240d660ef8f50330f4c1ea8dacb12983571e1a0d0a5140ab18de09b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d728271be240d660ef8f50330f4c1ea8dacb12983571e1a0d0a5140ab18de09b", kill_on_drop: false }`
[INFO] [stdout] d728271be240d660ef8f50330f4c1ea8dacb12983571e1a0d0a5140ab18de09b
[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" "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] f10c02d7aec0bd1dc80bfb110decd0aee4a91ecf393f0a5a4a7e8e5ec024886e
[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" "f10c02d7aec0bd1dc80bfb110decd0aee4a91ecf393f0a5a4a7e8e5ec024886e", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking seahorse v0.6.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking commit_artist v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/external_command.rs:34:24
[INFO] [stdout]    |
[INFO] [stdout] 34 |                   panic!(format!(
[INFO] [stdout]    |  ________________________^
[INFO] [stdout] 35 | |                     "Error in executing `git -C {} log` -1 --format=%H",
[INFO] [stdout] 36 | |                     path
[INFO] [stdout] 37 | |                 ))
[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] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/external_command.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |                   panic!(format!(
[INFO] [stdout]    |  ________________________^
[INFO] [stdout] 54 | |                     "Erorr in executing `git -C {} cat-file -p {}`",
[INFO] [stdout] 55 | |                     path, hash
[INFO] [stdout] 56 | |                 ))
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[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] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/external_command.rs:34:24
[INFO] [stdout]    |
[INFO] [stdout] 34 |                   panic!(format!(
[INFO] [stdout]    |  ________________________^
[INFO] [stdout] 35 | |                     "Error in executing `git -C {} log` -1 --format=%H",
[INFO] [stdout] 36 | |                     path
[INFO] [stdout] 37 | |                 ))
[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] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/external_command.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |                   panic!(format!(
[INFO] [stdout]    |  ________________________^
[INFO] [stdout] 54 | |                     "Erorr in executing `git -C {} cat-file -p {}`",
[INFO] [stdout] 55 | |                     path, hash
[INFO] [stdout] 56 | |                 ))
[INFO] [stdout]    | |_________________^
[INFO] [stdout]    |
[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]     Finished dev [unoptimized + debuginfo] target(s) in 11.41s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f10c02d7aec0bd1dc80bfb110decd0aee4a91ecf393f0a5a4a7e8e5ec024886e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f10c02d7aec0bd1dc80bfb110decd0aee4a91ecf393f0a5a4a7e8e5ec024886e", kill_on_drop: false }`
[INFO] [stdout] f10c02d7aec0bd1dc80bfb110decd0aee4a91ecf393f0a5a4a7e8e5ec024886e