[INFO] fetching crate conserve 0.6.10...
[INFO] checking conserve-0.6.10 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate conserve 0.6.10 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate conserve 0.6.10 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate conserve 0.6.10
[INFO] finished tweaking crates.io crate conserve 0.6.10
[INFO] tweaked toml for crates.io crate conserve 0.6.10 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate conserve 0.6.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--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 assert_fs v1.0.0
[INFO] [stderr]   Downloaded thousands v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6179d7392405a5496f0b09000e0cd431656f6b4d99356d085870ddf77531403f
[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" "6179d7392405a5496f0b09000e0cd431656f6b4d99356d085870ddf77531403f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6179d7392405a5496f0b09000e0cd431656f6b4d99356d085870ddf77531403f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6179d7392405a5496f0b09000e0cd431656f6b4d99356d085870ddf77531403f", kill_on_drop: false }`
[INFO] [stdout] 6179d7392405a5496f0b09000e0cd431656f6b4d99356d085870ddf77531403f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d5748f8d2b84fbf55e803f6113199cadb6ce62bcf9706ed5ce82db324bb5617
[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" "7d5748f8d2b84fbf55e803f6113199cadb6ce62bcf9706ed5ce82db324bb5617", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling const_fn v0.4.3
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling snap v1.0.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking thousands v0.2.0
[INFO] [stderr]    Compiling escargot v0.5.0
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking instant v0.1.8
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking semver-parser v0.10.1
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking blake2-rfc v0.2.18
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking copy_dir v0.1.2
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking signal-hook-registry v1.2.2
[INFO] [stderr]     Checking mio v0.7.5
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking signal-hook v0.1.16
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking crossterm v0.18.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking predicates v1.0.5
[INFO] [stderr]     Checking ignore v0.4.16
[INFO] [stderr]     Checking assert_cmd v1.0.1
[INFO] [stderr]     Checking globwalk v0.7.3
[INFO] [stderr]     Checking assert_fs v1.0.0
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking conserve v0.6.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `bytes_total`
[INFO] [stdout]   --> src/progress.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     bytes_total: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `bytes_total`
[INFO] [stdout]   --> src/progress.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     bytes_total: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/backup.rs:472:47
[INFO] [stdout]     |
[INFO] [stdout] 472 |         assert!(stats.compressed_bytes <= 19, stats.compressed_bytes);
[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] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 472 |         assert!(stats.compressed_bytes <= 19, "{}", stats.compressed_bytes);
[INFO] [stdout]     |                                               ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/band.rs:330:62
[INFO] [stdout]     |
[INFO] [stdout] 330 |         assert!(e_str.contains("Band version \"0.8.8\" in"), e_str);
[INFO] [stdout]     |                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 330 |         assert!(e_str.contains("Band version \"0.8.8\" in"), "{}", e_str);
[INFO] [stdout]     |                                                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/live_tree.rs:400:37
[INFO] [stdout]     |
[INFO] [stdout] 400 |         assert!(re.is_match(&repr), repr);
[INFO] [stdout]     |                                     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 400 |         assert!(re.is_match(&repr), "{}", repr);
[INFO] [stdout]     |                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 42s
[INFO] running `Command { std: "docker" "inspect" "7d5748f8d2b84fbf55e803f6113199cadb6ce62bcf9706ed5ce82db324bb5617", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d5748f8d2b84fbf55e803f6113199cadb6ce62bcf9706ed5ce82db324bb5617", kill_on_drop: false }`
[INFO] [stdout] 7d5748f8d2b84fbf55e803f6113199cadb6ce62bcf9706ed5ce82db324bb5617