[INFO] fetching crate tcalc 1.8.1...
[INFO] building tcalc-1.8.1 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate tcalc 1.8.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate tcalc 1.8.1
[INFO] finished tweaking crates.io crate tcalc 1.8.1
[INFO] tweaked toml for crates.io crate tcalc 1.8.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tcalc 1.8.1 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tcalc 1.8.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 395e5f7502ce0a06e7a0d7bfa1f7cfc8642c66bb62b054ddac34f3e06deafdc5
[INFO] running `Command { std: "docker" "start" "-a" "395e5f7502ce0a06e7a0d7bfa1f7cfc8642c66bb62b054ddac34f3e06deafdc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "395e5f7502ce0a06e7a0d7bfa1f7cfc8642c66bb62b054ddac34f3e06deafdc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "395e5f7502ce0a06e7a0d7bfa1f7cfc8642c66bb62b054ddac34f3e06deafdc5", kill_on_drop: false }`
[INFO] [stdout] 395e5f7502ce0a06e7a0d7bfa1f7cfc8642c66bb62b054ddac34f3e06deafdc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98ea42dba163831a7153b3fb92784cbd87b44712828c00bcf2baa5bf89263984
[INFO] running `Command { std: "docker" "start" "-a" "98ea42dba163831a7153b3fb92784cbd87b44712828c00bcf2baa5bf89263984", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling encode_unicode v0.1.3
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]    Compiling tcalc-rustyline v1.0.2
[INFO] [stderr]    Compiling tcalc v1.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]   --> src/scanning.rs:45:6
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub length: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.00s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.4.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "98ea42dba163831a7153b3fb92784cbd87b44712828c00bcf2baa5bf89263984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98ea42dba163831a7153b3fb92784cbd87b44712828c00bcf2baa5bf89263984", kill_on_drop: false }`
[INFO] [stdout] 98ea42dba163831a7153b3fb92784cbd87b44712828c00bcf2baa5bf89263984
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c53d5111a1611b00e5256af583cc0b1d1e3dc1991d8381842565fbb52834a593
[INFO] running `Command { std: "docker" "start" "-a" "c53d5111a1611b00e5256af583cc0b1d1e3dc1991d8381842565fbb52834a593", kill_on_drop: false }`
[INFO] [stderr]    Compiling tcalc v1.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]   --> src/scanning.rs:45:6
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub length: u32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/scanning.rs:408:18
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn setup(input: &str) -> Scanner {
[INFO] [stdout]     |                     ^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn setup(input: &str) -> Scanner<'_> {
[INFO] [stdout]     |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.32s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.4.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "c53d5111a1611b00e5256af583cc0b1d1e3dc1991d8381842565fbb52834a593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c53d5111a1611b00e5256af583cc0b1d1e3dc1991d8381842565fbb52834a593", kill_on_drop: false }`
[INFO] [stdout] c53d5111a1611b00e5256af583cc0b1d1e3dc1991d8381842565fbb52834a593