[INFO] fetching crate shared-string 0.1.7...
[INFO] checking shared-string-0.1.7 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate shared-string 0.1.7 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate shared-string 0.1.7 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shared-string 0.1.7
[INFO] finished tweaking crates.io crate shared-string 0.1.7
[INFO] tweaked toml for crates.io crate shared-string 0.1.7 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e62bfb22c923dc68ead23328d66947cda5a5cb2042852a317260f7fe7c44e207
[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" "e62bfb22c923dc68ead23328d66947cda5a5cb2042852a317260f7fe7c44e207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e62bfb22c923dc68ead23328d66947cda5a5cb2042852a317260f7fe7c44e207", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e62bfb22c923dc68ead23328d66947cda5a5cb2042852a317260f7fe7c44e207", kill_on_drop: false }`
[INFO] [stdout] e62bfb22c923dc68ead23328d66947cda5a5cb2042852a317260f7fe7c44e207
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c35820cc4169e20d198be00a486b56b0a1333c8d218838c6f97ec2902257872e
[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" "c35820cc4169e20d198be00a486b56b0a1333c8d218838c6f97ec2902257872e", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking half v1.7.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking shared-string v0.1.7 (/tmp/fixit)
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]     Checking crossbeam-utils v0.8.5
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]    Migrating benches/parsing_key_value_lines.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating benches/main_example.rs from 2018 edition to 2021
[INFO] [stdout] warning: field is never read: `firstname`
[INFO] [stdout]   --> benches/main_example.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub firstname: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `middlename`
[INFO] [stdout]   --> benches/main_example.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub middlename: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lastname`
[INFO] [stdout]   --> benches/main_example.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub lastname: String
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `firstname`
[INFO] [stdout]   --> benches/main_example.rs:31:2
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub firstname: SharedString,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `middlename`
[INFO] [stdout]   --> benches/main_example.rs:32:2
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub middlename: SharedString,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lastname`
[INFO] [stdout]   --> benches/main_example.rs:33:2
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub lastname: SharedString
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.87s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking shared-string v0.1.7 (/tmp/fixit)
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: field is never read: `firstname`
[INFO] [stdout]   --> benches/main_example.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub firstname: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `middlename`
[INFO] [stdout]   --> benches/main_example.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub middlename: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lastname`
[INFO] [stdout]   --> benches/main_example.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub lastname: String
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `firstname`
[INFO] [stdout]   --> benches/main_example.rs:31:2
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub firstname: SharedString,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `middlename`
[INFO] [stdout]   --> benches/main_example.rs:32:2
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub middlename: SharedString,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `lastname`
[INFO] [stdout]   --> benches/main_example.rs:33:2
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub lastname: SharedString
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.88s
[INFO] running `Command { std: "docker" "inspect" "c35820cc4169e20d198be00a486b56b0a1333c8d218838c6f97ec2902257872e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c35820cc4169e20d198be00a486b56b0a1333c8d218838c6f97ec2902257872e", kill_on_drop: false }`
[INFO] [stdout] c35820cc4169e20d198be00a486b56b0a1333c8d218838c6f97ec2902257872e